Risk factors for hip fracture in skilled nursing facilities: who should be evaluated?

Causal effect of education on bone mineral density: A Mendelian randomization study

Education level may have some association with the incidence of osteoporosis, but it is elusive if this association is causal. This two-sample Mendelian randomization analysis focused on the causal effect of education level on femoral neck bone mineral density (FN-BMD), forearm BMD, lumbar spine BMD, and heel BMD. Twelve single nucleotide polymorphisms were used as instrumental variables. The results suggested that high education level was associated with improved FN-BMD (beta-estimate: 0.406, 95% confidence interval: 0.061 to 0.751, standard error: 0.176, P-value = .021). There were null association between education and other sites of bone mineral density. Our results found the causal effect of high education level on improved FN-BMD, and improved educational attainment may be beneficial to prevent osteoporosis.

Performance of FRAX in older adults with frailty: the Framingham Heart Study

We compared the performance of FRAX according to frailty status in 3554 individuals from the Framingham Study. During 10-year follow-up, 6.9% and 3.0% of participants with and without frailty experienced MOF. Discrimination profiles were lower in participants with frailty compared to those without, but they improved when FRAX included BMD.

INTRODUCTION

Frailty increases fracture risk. FRAX was developed to predict fractures but never validated in individuals with frailty. We aimed to compare the predictive performance of FRAX (v4.3) in individuals with and without frailty.

METHODS

We conducted a cohort study using the Framingham Heart Study. Frailty was defined by the Fried phenotype. Major osteoporotic fractures (MOF) were ascertained from medical records during 10-year follow-up. To evaluate discrimination and calibration of FRAX, we calculated the area-under-the-receiver-operating characteristics curves (AUC) using logistic regression models and observed-to-predicted fracture probabilities. Analyses were stratified by frailty status.

RESULTS

Frailty was present in 550/3554 (15.5%) of participants. Participants with frailty were older (81.1 vs. 67.6 years), female (68.6% vs. 55.1%), and had greater mean FRAX scores (MOF: 15.9% vs. 10.1%) than participants without frailty. During follow-up, 38 participants with frailty (6.9%) and 91 without (3.0%) had MOFs. The AUC for FRAX (without BMD) was lower in participants with frailty (0.584; 95% CI 0.504-0.663) compared to those without (0.695; 95% CI 0.649-0.741); p value = 0.02. Among participants with frailty, the AUC improved when FRAX included BMD (AUC 0.658, p value < 0.01). FRAX overestimated MOF risk, with larger overestimations in individuals without frailty. Performance of FRAX for hip fracture was similar.

CONCLUSION

FRAX may have been less able to identify frail individuals at risk for fracture, as compared with individuals without frailty, unless information on BMD is available. This suggests that BMD captures features important for fracture prediction in frail persons. Future fracture prediction models should be developed among persons with frailty.

Predictors of osteoporotic fracture in postmenopausal women: a meta-analysis

Osteoporosis affects more than 200 million women worldwide, with postmenopausal women being particularly susceptible to this condition and its severe sequelae disproportionately, such as osteoporotic fractures. To date, the current focus has been more on symptomatic treatment, rather than preventive measures. To address this, we performed a meta-analysis aiming to identify potential predictors of osteoporotic fractures in postmenopausal women, with the ultimate goal of identifying high-risk patients and exploring potential therapeutic approaches. We searched Embase, MEDLINE and Cochrane with search terms (postmenopausal AND fracture) AND ("risk factor" OR "predictive factor") in May 2022 for cohort and case-control studies on the predictors of osteoporotic fracture in postmenopausal women. Ten studies with 1,287,021 postmenopausal women were found eligible for analyses, in which the sample size ranged from 311 to 1,272,115. The surveyed date spanned from 1993 to 2021. Our results suggested that age, BMI, senior high school and above, parity ≥ 3, history of hypertension, history of diabetes mellitus, history of alcohol intake, age at menarche ≥ 15, age at menopause < 40, age at menopause > 50, estrogen use and vitamin D supplements were significantly associated with osteoporotic fracture in postmenopausal women. Our findings facilitate the early prediction of osteoporotic fracture in postmenopausal women and may contribute to potential therapeutic approaches. By focusing on preventive strategies and identifying high-risk individuals, we can work toward reducing the burden of osteoporosis-related fractures in this vulnerable population.

Impact of glaucoma on vision-specific quality of life in monocular glaucoma patients using the Indian vision function questionnaire

Purpose

To evaluate the determinants affecting the quality of life in monocular glaucoma patients using the Indian vision function questionnaire.

Methods: In this prospective cross-sectional study,

total of 196 patients were divided into two groups: cases and controls. Indian Vision Function Questionnaire (IND-VFQ) was administered and analyzed. One hundred twenty-nine (58.6%) patients who had lost their vision in one eye due to glaucoma were included as cases and 67 (30.4%) patients who had lost their vision due to other causes were taken as controls.

Results

Median composite score of subscales was 54.62 (29.7-74.7) in group 1 and 45.38 (23.7-76.7) in group 2. The psychosocial impact scale was the most affected scale, the median scores were 33.02 (0 to 60.0) and 19.07 (0 to 53.0) in groups 1 and 2, respectively. Among all dimensions of IND-VFQ, the highest score was for color vision 100.0 (0-100.0) and 100.0 (0-100.0), and the lowest median score was found in mental health and dependency in both the groups. Multiple linear regression analysis demonstrated that visual acuity was associated with a low score (P < 0.001). Female gender was significantly associated with the overall score in the univariate model (P = 0.006).

Conclusion

Monocular glaucoma patients have a poor general and vision-related quality of life. Depression associated with monocularity and the perception of dependency and being a burden on their family members greatly impacted the mental health of the participants.

Socio-economic inequalities in fragility fracture incidence: a systematic review and meta-analysis of 61 observational studies

Individuals with low socio-economic status (SES) have a more than 25% higher risk of fragility fractures than individuals with high SES. Body mass index and lifestyle appear to mediate the effect of SES on fracture risk. Strategies to prevent fractures should aim to reduce unhealthy behaviours through tackling structural inequalities.

INTRODUCTION

This systematic review and meta-analysis aimed to evaluate the impact of socio-economic status (SES) on fragility fracture risk.

METHODS

Medline, Embase, and CINAHL databases were searched from inception to 28 April 2021 for studies reporting an association between SES and fragility fracture risk among individuals aged ≥50 years. Risk ratios (RR) were combined in meta-analyses using random restricted maximum likelihood models, for individual-based (education, income, occupation, cohabitation) and area-based (Index of Multiple Deprivation, area income) SES measures.

RESULTS

A total of 61 studies from 26 different countries including more than 19 million individuals were included. Individual-based low SES was associated with an increased risk of fragility fracture (RR 1.27 [95% CI 1.12, 1.44]), whilst no clear association was seen when area-based measures were used (RR 1.08 [0.91, 1.30]). The strength of associations was influenced by the type and number of covariates included in statistical models: RR 2.69 [1.60, 4.53] for individual-based studies adjusting for age, sex and BMI, compared with RR 1.06 [0.92, 1.22] when also adjusted for health behaviours (smoking, alcohol, and physical activity). Overall, the quality of the evidence was moderate.

CONCLUSION

Our results show that low SES, measured at the individual level, is a risk factor for fragility fracture. Low BMI and unhealthy behaviours are important mediators of the effect of SES on fracture risk. Strategies to prevent fractures and reduce unhealthy behaviours should aim to tackle structural inequalities in society thereby reducing health inequalities in fragility fracture incidence.

Cognitive Impairment Level and Elderly Hip Fracture: Implications in Rehabilitation Nursing

PURPOSE

The aim of the study was to determine the cognitive impairment level influence in descriptive characteristics, comorbidities, complications, and pharmacological features of older adults with hip fracture.

DESIGN

Cross-sectional study.

METHOD

Five hundred fifty-seven older adults with hip fracture were recruited and divided into cognitive impairment levels (severe/moderate, mild, no impairment). Descriptive characteristics, comorbidities, complications, and pharmacological data were collected.

FINDINGS

Significant differences (p < .05, R = .012-.475) between cognitive impairment levels were shown. Shorter presurgery hospital length of stay and lower depression and Parkinson comorbidities; delirium complication; and antidepressants, antiparkinsonians, and neuroleptics use were shown for the no-impairment group. With regard to the cognitive impairment groups, lower presence of cardiopathy and hypertension; higher presence of dementia; antihypertensives, antiplatelets, and antidementia medication; infection/respiratory insufficiency complications; and lower constipation complications were shown.

CONCLUSION

Cognitive impairment levels may determine the characteristics, comorbidities, pharmacology, and complications of older adults with hip fracture.

CLINICAL RELEVANCE

Cognitive impairment level may impact rehabilitation nursing practice, education, and care coordination.

Clinical and Economic Burden of Glaucoma by Disease Severity: A United States Claims-Based Analysis

PURPOSE

To provide updated estimates of the clinical and economic burden in patients with ocular hypertension (OHT) or open-angle glaucoma (OAG) by disease severity in the United States and to estimate incremental costs associated with disease progression.

DESIGN

Retrospective cohort study.

PARTICIPANTS

Patients with 1 or more International Classification of Diseases, 10th Revision, Clinical Modification, diagnoses for OAG or OHT who are 40 years of age or older.

METHODS

Patients were identified from IQVIA's PharMetrics Plus database during the index period (October 1, 2015, to August 31, 2017). Patients had continuous health plan enrollment for 12 months or more before and after the index date (first OAG or OHT diagnosis during index period) and were stratified by baseline disease severity based on diagnosis code. Annual eye-related outpatient healthcare use and costs were estimated on a per-user basis. A generalized linear model was used to estimate adjusted mean costs by severity and to evaluate the impact of observed disease worsening on costs. A multivariate logistic regression analysis evaluated the relationship between severity and odds of falls or fractures.

MAIN OUTCOME MEASURES

Total eye-related outpatient costs and odds of falls or fractures.

RESULTS

One hundred seventy-seven thousand three hundred fifty-two OHT and OAG patients were identified (67.8% with OAG). Open-angle glaucoma patients showed higher eye-related outpatient costs than OHT patients (median, $516 [interquartile range (IQR), $323-$898] vs. $344 [IQR, $197-$617], respectively). Patients with severe OAG showed higher eye-related outpatient costs than moderate and mild OAG patients (median, $639 [IQR, $381-$1264] vs. $546 [IQR, $345-$950] vs. $476 [IQR, $304-$765], respectively; P < 0.0001), as well as higher glaucoma-related pharmacy costs (median, $493 [IQR, $122-$1457] vs. $244 [IQR, $84-$1113] vs. $139 [IQR, $66-$818], respectively; P < 0.0001). In adjusted analyses, disease worsening was associated with at least 2-fold higher annual eye-related outpatient costs (P < 0.0001). Severe OAG patients had significantly higher odds of fall or fracture compared with OHT patients (odds ratio, 1.34; 95% confidence interval, 1.13-1.59).

CONCLUSIONS

Updated estimates showed highest eye-related costs for those with severe disease and disease progression among patients with OAG and OHT. Severe OAG was associated with increased risk of falls or fractures compared with patients with OHT. Therapies that delay disease progression may provide clinical and economic benefits.

Fracture Risk Assessment in Long-term Care (FRAiL): Development and Validation of a Prediction Model

Background

Strategies used to predict fracture in community-dwellers may not be useful in the nursing home (NH). Our objective was to develop and validate a model (Fracture Risk Assessment in Long-term Care [FRAiL]) to predict the 2-year risk of hip fracture in NH residents using readily available clinical characteristics.

Methods

The derivation cohort consisted of 419,668 residents between May 1, 2007 and April 30, 2008 in fee-for service Medicare. Hip fractures were identified using Part A diagnostic codes. Resident characteristics were obtained using the Minimum Data Set and Part D claims. Multivariable competing risk regression was used to model 2-year risk of hip fracture. We validated the model in a remaining 1/3 sample (n = 209,834) and in a separate cohort in 2011 (n = 858,636).

Results

Mean age was 84 years (range 65-113 years) and 74.5% were female. During 1.8 years mean follow-up, 14,553 residents (3.5%) experienced a hip fracture. Fifteen characteristics in the final model were associated with an increased risk of hip fracture including dementia severity, ability to transfer and walk independently, prior falls, wandering, and diabetes. In the derivation sample, the concordance index was 0.69 in men and 0.71 in women. Calibration was excellent. Results were similar in the internal and external validation samples.

Conclusions

The FRAiL model was developed specifically to identify NH residents at greatest risk for hip fracture, and it identifies a different pattern of risk factors compared with community models. This practical model could be used to screen NH residents for fracture risk and to target intervention strategies.

Commonly Initiated Opioids and Risk of Fracture Hospitalizations in United States Nursing Homes

OBJECTIVES

The aim of this study was to estimate the comparative safety of initiating commonly used opioids among older, long-stay United States nursing home residents with fracture hospitalizations.

METHODS

We conducted a new-user retrospective cohort study of nursing home residents initiating short-acting oxycodone, hydrocodone, or tramadol by merging the 2011-2013 Minimum Data Set 3.0 to Medicare hospitalization and pharmacy claims. Residents (≥ 65 years, no cancer or hospice use) contributed treatment episodes (> 120 days with no prior opioid claims) and were followed for 180 days until incident fracture hospitalization (hip, femur, humerus, pelvis, radius/ulna), death (competing risk), treatment changes (e.g., discontinuation), or administrative censoring. Competing risks models with inverse probability of treatment weighting were used to estimate subdistribution hazard ratios (HR_SD) and 95% confidence intervals (CI).

RESULTS

Overall, 110,862 residents contributed 134,432 treatment episodes: 14,373 oxycodone; 69,182 hydrocodone; and 50,877 tramadol initiators. The incidences of fracture hospitalizations per 100 person-years were 9.4 (95% CI 7.5-11.7) for oxycodone, 7.9 (95% CI 7.1-8.8) for hydrocodone, and 5.0 (95% CI 4.3-5.7) for tramadol initiators. In weighted models, oxycodone initiators had a similar rate of fractures to hydrocodone initiators (HR_SD 1.08, 95% CI 0.79-1.48). Tramadol initiators had lower fracture rates than hydrocodone initiators (HR_SD 0.67, 95% CI 0.56-0.80).

CONCLUSIONS

The lower rate of fractures that we documented among tramadol initiators compared with hydrocodone initiators is consistent, albeit attenuated compared with prior studies among community-dwelling older adults. However, overall fracture rates were lower than in community settings, potentially due to the limited risk of falling in this population with limited mobility.

Risk factors and quality of life for the occurrence of hip fracture in postmenopausal women

Background

To identify the risk factors and changes of quality of life in the first occurrence of hip fracture in Taiwanese postmenopausal women.

Methods

In this case-control study, we enrolled 100 postmenopausal women with accidental first-incident hip fracture and 100 women without hip fracture. The control group was matched to the study group according to age. Evaluation consisted of a questionnaire, an interview to both assess quality of life via a 36-item Short Form Health Survey and document risk factors, a physical examination to record height and body weight, and bone mineral density (BMD) of the hip and spine using dual-energy X-ray absorptiometry (DXA).

Results

The mean age of the patients was 77.9 years old. Compared with the controls, the patients with first-incident hip fracture had a lower level of education, increased body height, higher parity, no experience of estrogen therapy, prior history of diabetes mellitus and rheumatoid arthritis, walking aid use, less weight-bearing exercise, and steroid use. Total hip BMD was a stronger predictor than BMD at different sites. Quality of life was significantly higher in the control group at the baseline and 4-month follow-up.

Conclusions

Quality of life was related to the first-incident hip fracture. The increased risk of falls, lower level of education, and total hip BMD are the strongest predictors of first-incident hip fracture in Asian elderly postmenopausal women.

Facility and State Variation in Hip Fracture in U.S. Nursing Home Residents

OBJECTIVES

To quantify the variation in hip fracture incidence across U.S. nursing home (NH) facilities and states and examine how hip fracture incidence varies according to facility- and state-level characteristics.

DESIGN

Retrospective cohort using linked national Minimum Data Set assessments; Online Survey, Certification and Reporting records; and Medicare claims.

SETTING

U.S. NHs with 100 or more beds.

PARTICIPANTS

Long-stay NH residents between May 1, 2007, and April 30, 2008, from 1,481 facilities and 46 U.S. states (N = 201,892).

MEASUREMENTS

Incident hip fractures were ascertained using Medicare Part A diagnostic codes. Each resident was followed for up to 2 years.

RESULTS

The mean adjusted incidence rate of hip fractures for all facilities was 3.13 (95% confidence interval (CI) = 3.01-3.26) per 100 person-years (range 1.20, 95% CI = 1.15-1.26 to 6.40, 95% CI = 6.07-6.77). Facilities with the highest rates of hip fracture had greater percentages of residents taking psychoactive medications (top tertile 27.2%, bottom tertile 24.8%), and fewer nursing (top tertile 3.43, bottom tertile 3.53) and direct care (top tertile 3.22, bottom tertile 3.29) hours per day per resident. The combination of state and facility characteristics explained 6.7% of the variation in hip fracture, and resident characteristics explained 7.6%.

CONCLUSION

Much of the variation in hip fracture incidence remained unexplained, although these findings indicate that potentially modifiable state and facility characteristics such as psychoactive drug prescribing and minimum staffing requirements could be addressed to help reduce the rate of hip fracture in U.S. NHs.

Management Team Perceptions of Risks and Strategies for Preventing Falls Among Short-Stay Patients in Nursing Homes

We sought to understand strategies reported by members of the nursing home management team used to prevent falls in short-stay nursing home patients. Using Donabedian's model of structure, process, and outcomes, we interviewed 16 managers from 4 nursing homes in central North Carolina. Nursing home managers identified specific barriers to fall prevention among short-stay patients including rapid changes in functional and cognitive status, staff unfamiliarity with short-stay patient needs and patterns, and policies impacting care. Few interventions for reducing falls among short-stay patients were used at the structure level (eg, specialized units, workload ratio, and staffing consistency); however, many process-level interventions were used (eg, patient education on problem solving, self-care/mobility, and safety). We described several barriers to fall prevention among short-stay patients in nursing homes. From these descriptions, we propose three interventions that might reduce falls for short-stay patients and could be tested in future research: (1) clustering short-stay patients within a physical location to permit higher staff-patient ratios and enhanced surveillance, (2) population-based prevention interventions to supplement existing individually tailored prevention strategies (eg, toileting schedules, medication review for all), and (3) transitional care interventions that transmit key information from hospitals to nursing homes.

Quality of life in glaucoma patients and normal subjects related to the severity of damage in each eye

OBJECTIVE

To assess the quality of life in glaucoma patients and normal subjects, and to assess its relationship with the severity of damage in each eye.

METHODS

A cross-sectional study was conducted with prospective selection of cases. The study included 464 subjects and were distributed into 4categories. Subjects included in group 1 had both eyes normal, that is with a normal intraocular pressure (IOP), optic disk and visual fields (VF), or mild glaucoma, defined as untreated IOP>21mmHg and abnormal VF with mean defect (MD) over -6dB. Group 2 consisted of patients with both eyes with mild or moderate glaucoma, defined as untreated IOP>21mmHg and abnormal VF with MD between -6 and -12dB. Group 3 included patients with moderate to severe glaucoma, that is, untreated IOP>21mmHg and abnormal VF with MD of less than -12dB in both eyes. Group 4 consisted of patients with asymmetric glaucoma damage, that is, they had one eye with severe glaucoma and the other eye normal or with mild glaucoma. All subjects completed 3 different questionnaires. Global quality of life was evaluated with EuroQol-5D (EQ-5D). Vision related quality of life was assessed with Visual Function Questionnaire (VFQ-25). Quality of life related to ocular surface disease was measured with Ocular Surface Disease Index (OSDI).

RESULTS

VFQ-25 showed that group 3 had significantly lower scores than group 1 in mental health (P=.006), dependence (P=.006), colour vision (P=.002), and peripheral vision (P=.002). EQ-5D showed no significant differences between any group, but a trend was found to greater difficulty in group 3 than in groups 1 and 2, and in all dimensions. OSDI showed a higher score, or which was the same as a major disability, in groups 2 and 3 than group 1 (P=.021 and P=.014, respectively). VFQ-25 only found significant differences between group 1 and group 4. Dimensions with significant differences were found between group 1 and 3 (both eyes with advanced or moderate glaucoma). These were not found between group 1 and group 4 (the group in which one eye has only mild glaucoma or no glaucoma). This finding confirms that the eye with less glaucoma damage determines the quality of life.

CONCLUSIONS

Our results demonstrate that quality of life is impaired in patients with glaucoma, and this alteration is greater the more advanced is glaucoma damage in the best or both eyes.

Development and validation of the Fracture Risk Scale (FRS) that predicts fracture over a 1-year time period in institutionalised frail older people living in Canada: an electronic record-linked longitudinal cohort study

OBJECTIVES

To develop and validate our Fracture Risk Scale (FRS) over a 1-year time period, using the long-term care (LTC) Resident Assessment Instrument Minimum Data Set Version 2.0 (RAI-MDS 2.0).

DESIGN

A retrospective cohort study.

SETTING

LTC homes in Ontario, Canada.

PARTICIPANTS

Older adults who were admitted to LTC and received a RAI-MDS 2.0 admission assessment between 2006 and 2010.

RESULTS

A total of 29 848 LTC residents were enrolled in the study. Of these 22 386 were included in the derivation dataset and 7462 individual were included in the validation dataset. Approximately 2/3 of the entire sample were women and 45% were 85 years of age or older. A total of 1553 (5.2%) fractures were reported over the 1-year time period. Of these, 959 (61.8%) were hip fractures. Following a hip fracture, 6.3% of individuals died in the emergency department or as an inpatient admission and did not return to their LTC home. Using decision tree analysis, our final outcome scale had eight risk levels of differentiation. The percentage of individuals with a hip fracture ranged from 0.6% (lowest risk level) to 12.6% (highest risk level). The area under the curve of the outcome scale was similar for the derivation (0.67) and validation (0.69) samples, and the scale exhibited a good level of consistency.

CONCLUSIONS

Our FRS predicts hip fracture over a 1-year time period and should be used as an aid to support clinical decisions in the care planning of LTC residents. Future research should focus on the transformation of our scale to a Clinical Assessment Protocol and to assess the FRS in other healthcare settings.

Severe Spastic Contractures and Diabetes Mellitus Independently Predict Subsequent Minimal Trauma Fractures Among Long-Term Care Residents

OBJECTIVE

The study aimed to examine the epidemiology of hypertonic contractures and its relationship with minimal trauma fracture (MTF), and to determine the incidence and predictors of (MTF) in long-term care residents.

DESIGN

This was a longitudinal cohort study of prospectively collected data. Participants were followed from March 2007 to March 2016 or until death.

SETTING

A 300-bed long-term care hospital in Hong Kong.

PARTICIPANTS

All long-term care residents who were in need of continuous medical and nursing care for their activities of daily living.

MEASUREMENTS

Information on patients' demographic data, severe contracture defined as a decrease of 50% or more of the normal passive range of joint movement of the joint, and severe limb spasticity defined by the Modified Ashworth Scale higher than grade 3, medical comorbidities, functional status, cognitive status, nutritional status including body mass index and serum albumin, past history of fractures, were evaluated as potential risk factors for subsequent MTF.

RESULTS

Three hundred ninety-six residents [148 males, mean ± standard deviation (SD), age = 79 ± 16 years] were included for analysis. The presence of severe contracture was highly prevalent among the study population: 91% of residents had at least 1 severe contracture, and 41% of residents had severe contractures involving all 4 limbs. Moreover, there were a significant proportion of residents who had severe limb spasticity with the elbow flexors (32.4%) and knee flexors (33.9%) being the most commonly involved muscles. Twelve residents (3%) suffered from subsequent MTF over a median follow-up of 33 (SD = 30) months. Seven out of these 12 residents died during the follow-up period, with a mean survival of 17.8 months (SD = 12.6) after the fracture event. The following 2 factors were found to independently predict subsequent MTF in a multivariate Cox regression: bilateral severe spastic knee contractures (hazard ratio = 16.5, P < .0001, confidence interval 4.8-56.4) and diabetes mellitus (hazard ratio = 4.0. P = .018, confidence interval 1.3-12.7).

CONCLUSIONS

Severe spasticity and contractures are common morbidities in long-term care residents, and bilateral severe spastic knee contractures and diabetes mellitus are 2 independent predictors of subsequent MTF. Spasticity management and prevention of contractures, combined with educational programs for caregivers to identify the high-risk residents and apply proper handling techniques during routine care, may be helpful in reducing the risk of MTF in long-term care residents. Further large-scale longitudinal studies are needed to confirm these findings.

Geographic Variation in Hip Fracture Among United States Long-Stay Nursing Home Residents

INTRODUCTION

Despite high rates of hip fracture among United States (US) nursing home (NH) residents, little is known about geographic variation in hip fracture incidence. We used nationally representative data to identify geographic variation in hip fracture among US NH residents.

DESIGN AND SETTING

Retrospective cohort study using Part A claims for a 100% of Medicare enrollees in 15,289 NHs linked to NH minimum data set and Online Survey, Certification, and Reporting databases.

PARTICIPANTS

A total of 891,085 long-stay (continuous residence of ≥100 days) NH residents ≥65 years old.

MEASUREMENTS

Medicare Part A claims documenting a hip fracture. Mean incidence rates of hip fracture for long-stay NH residents were calculated for each state and US Census Division from 2007 to 2010.

RESULTS

The age-, sex-, and race-adjusted incidence rate of hip fracture ranged from 1.49 hip fractures/100 person-years (Hawaii) to 3.60 hip fractures/100 person-years (New Mexico), with a mean of 2.38 (standard deviation 0.43) hip fractures/100 person-years. The mean incidence of hip fracture was 1.7-fold greater in the highest quintile than the lowest.

CONCLUSIONS

We observed modest US state and regional variation in hip fracture incidence among long-stay NH residents. Future studies should assess whether state policies or NH characteristics explain the variation.

Risk factor for first-incident hip fracture in Taiwanese postmenopausal women

OBJECTIVE

The variation in hip fracture risk between countries is greater than 10-fold. The present study aimed at identifying risk factors that resulted in the first occurrence of hip fracture in Taiwanese postmenopausal women.

MATERIALS AND METHODS

A case-control study with a patient group of 50 postmenopausal women, who were admitted to Keelung Chang Gung Hospital, Keelung, Taiwan due to the first incident of accidental hip fracture, was used to examine potential risk factors, including bone mass. Fifty women without hip fracture, selected from those undergoing general health evaluation at the Gynecology Outpatient Clinic at Keelung Chang Gung Hospital, were used as the control group and were matched to the case patients according to age. Evaluation consisted of a questionnaire, interview to document risk factors, physical examination (to record body height and body weight), and examination [dual-energy X-ray absorptiometry used to measure bone mineral density (BMD) of the hip and spine].

RESULTS

The average age of participants of both groups was 79.6 years. Lower level of education, younger age at menopause, increased body height, weight-bearing exercise less than three times per week, and lower BMD were associated with first-incident hip fracture. Total hip BMD was a stronger predictor than the BMD of different sites. Participants in the control group had a significantly higher prevalence of chronic diseases and a history of cataracts or glaucoma compared with those in the patient group.

CONCLUSION

While total hip BMD is the strongest predictor of hip fracture, increasing awareness of osteoporosis prevention by educating people about good lifestyle habits and how to maintain BMD is prioritized for preventing the first-incident hip fracture in Taiwanese women.

What happens to patients when they fracture their hip during a skilled nursing facility stay?

OBJECTIVES

To characterize outcomes of patients experiencing a fall and subsequent hip fracture while in a nursing home receiving skilled nursing facility (SNF) services.

DESIGN

Observational study.

PARTICIPANTS

Short-stay fee-for-service Medicare beneficiaries who experienced their first hip fracture during an SNF stay.

MEASUREMENTS

Outcomes measured in the 90 days after the hip fracture hospitalization included community discharge (with a stay in the community <30 days), successful community discharge (in the community ≥30 days), death, and institutionalization.

RESULTS

Between 1999 and 2007, 27,305 hip fractures occurred among short-stay nursing home patients receiving SNF care. After surgical repair of the hip fracture, 83.9% of these patients were discharged from the hospital back to an SNF, with most (99%) returning to the facility where the hip fracture occurred. In the first 90 days after hospitalization, 24.1% of patients died, 7.3% were discharged to the community but remained fewer than 30 days, 14.0% achieved successful community discharge, and 54.6% were still in a health care institution with almost 46.4% having transitioned to long-term care.

CONCLUSION

SNF care aims to maximize the short-stay patient's independence and facilitate a safe community transition. However, experiencing a fall and hip fracture during the SNF stay was a sentinel event that limited the achievement of this goal. There is an urgent need to ensure the integration of fall prevention into the patient's plan of care. Further, falls among SNF patients may serve as indicator of quality, which consumers and payers can use to make informed health care decisions.

Fracture risk in long term care: a systematic review and meta-analysis of prospective observational studies

BACKGROUND

The risk factors associated with fractures have been well-characterized in community dwelling populations, but have not been clearly defined in long-term care (LTC) settings. The objective of this review was to identify risk factors for fractures in LTC settings.

METHODS

We searched MEDLINE, the Cochrane Library, EMBASE and CINAHL up to June 2014, scanned reference lists of articles and consulted with experts in the field to identify relevant prospective cohort studies that evaluated risk factors associated with fracture incidence in LTC. We included studies that assessed the association between risk factors included in the WHO-Fracture Risk Assessment Tool (FRAX®) or other predictors relevant to LTC (psychotropic medications, cognitive impairment, mobility, and falls). All articles were screened and extracted by two authors. Available data on the association between a given risk factor and fracture incidence were pooled when possible. We used the GRADE criteria to provide a summary of evidence. The GRADE approach defines the quality of a body of evidence as the extent to which one can be confident that an estimate of effect or association is close to the quantity of specific interest.

RESULTS

We identified 13 prospective cohort studies which examined fracture incidence among LTC residents. Most predictors showed moderate increases in fracture risk, but the quality of the evidence was often low. Moderate quality evidence showed that prior fractures and falls may moderately increase the risk of fractures. Being a woman and cognitive impairment are probably associated with a small increase. The effect of mobility and psychotropic medication use is still uncertain primarily due to the various definitions used in the studies and difficulty summarising the results.

CONCLUSIONS

In addition to criteria used in the FRAX assessment tool, such as a previous fracture and female gender, we found that falls and cognitive impairment are also associated with a small to moderate increases in the risk of fractures in LTC. Developing an assessment tool that includes risk factors that are specific to LTC may improve the identification of individuals who can benefit from fracture prevention programs in these settings.

Neuropsychological mechanisms of falls in older adults

Falls, a common cause of injury among older adults, have become increasingly prevalent. As the world's population ages, the increase in-and the prevalence of-falls among older people makes this a serious and compelling societal and healthcare issue. Physical weakness is a critical predictor in falling. While considerable research has examined this relationship, comprehensive reviews of neuropsychological predictors of falls have been lacking. In this paper, we examine and discuss current studies of the neuropsychological predictors of falls in older adults, as related to sporting and non-sporting contexts. By integrating the existing evidence, we propose that brain aging is an important precursor of the increased risk of falls in older adults. Brain aging disrupts the neural integrity of motor outputs and reduces neuropsychological abilities. Older adults may shift from unconscious movement control to more conscious or attentive motor control. Increased understanding of the causes of falls will afford opportunities to reduce their incidence, reduce consequent injuries, improve overall well-being and quality of life, and possibly to prolong life.

Nonbenzodiazepine sleep medication use and hip fractures in nursing home residents

IMPORTANCE

It is important to understand the relationship between sleep medication use and injurious falls in nursing home residents.

OBJECTIVE

To conduct a case-crossover study to estimate the association between nonbenzodiazepine hypnotic drug use (zolpidem tartrate, eszopiclone, or zaleplon) and the risk for hip fracture among a nationwide sample of long-stay nursing home residents, overall and stratified by individual and facility-level characteristics.

DESIGN AND SETTING

Case-crossover study performed in an academic research setting.

PARTICIPANTS

The study participants included 15,528 long-stay US nursing home residents 50 years or older with a hip fracture documented in Medicare Part A and Part D fee-for-service claims between July 1, 2007, and December 31, 2008.

MAIN OUTCOME MEASURES

Odds ratios (ORs) of hip fracture were estimated using conditional logistic regression models by comparing the exposure to nonbenzodiazepine hypnotic drugs during the 0 to 29 days before the hip fracture (hazard period) with the exposure during the 60 to 89 and 120 to 149 days before the hip fracture (control periods). Analyses were stratified by individual and facility-level characteristics.

RESULTS

Among the study participants, 1715 (11.0%) were dispensed a nonbenzodiazepine hypnotic drug before the hip fracture, with 927 exposure-discordant pairs included in the analyses. The mean (SD) age of participants was 81.0 (9.7) years, and 77.6% were female. The risk for hip fracture was elevated among users of a nonbenzodiazepine hypnotic drug (OR, 1.66; 95% CI, 1.45-1.90). The association between nonbenzodiazepine hypnotic drug use and hip fracture was somes greater in new users (OR, 2.20; 95% CI, 1.76-2.74) and in residents with mild vs moderate to severe impairment in cognition (OR, 1.86 vs 1.43; P = .06), with moderate vs total or severe functional impairment (OR, 1.71 vs 1.16; P = .11), with limited vs full assistance required with transfers (OR, 2.02 vs 1.43; P = .02), or in a facility with fewer Medicaid beds (OR, 1.90 vs 1.46; P = .05).

CONCLUSIONS AND RELEVANCE

The risk for hip fracture is elevated among nursing home residents using a nonbenzodiazepine hypnotic drug. New users and residents having mild to moderate cognitive impairment or requiring limited assistance with transfers may be most vulnerable to the use of these drugs. Caution should be exercised when prescribing sleep medications to nursing home residents.

Prevalence of vertebral fracture in oldest old nursing home residents

We evaluated vertebral fracture prevalence using DXA-based vertebral fracture assessment and its influence on the Fracture Risk Assessment (FRAX) tool-determined 10-year fracture probability in a cohort of oldest old nursing home residents. More than one third of the subjects had prevalent vertebral fracture and 50% osteoporosis. Probably in relation with the prevailing influence of age and medical history of fracture, adding these information into FRAX did not markedly modify fracture probability.

INTRODUCTION

Oldest old nursing home residents are at very high risk of fracture. The prevalence of vertebral fracture in this specific population and its influence on fracture probability using the FRAX tool are not known.

METHODS

Using a mobile DXA osteodensitometer, we studied the prevalence of vertebral fracture, as assessed by vertebral fracture assessment program, of osteoporosis and of sarcopenia in 151 nursing home residents. Ten-year fracture probability was calculated using appropriately calibrated FRAX tool.

RESULTS

Vertebral fractures were detected in 36% of oldest old nursing home residents (mean age, 85.9 ± 0.6 years). The prevalence of osteoporosis and sarcopenia was 52% and 22%, respectively. Ten-year fracture probability as assessed by FRAX tool was 27% and 15% for major fracture and hip fracture, respectively. Adding BMD or VFA values did not significantly modify it.

CONCLUSION

In oldest old nursing home residents, osteoporosis and vertebral fracture were frequently detected. Ten-year fracture probability appeared to be mainly determined by age and clinical risk factors obtained by medical history, rather than by BMD or vertebral fracture.

The effect of socioeconomic position on bone health among Koreans by gender and menopausal status

While studies suggest that socioeconomic position (SEP) influences bone health and risk of osteoporotic fracture in postmenopausal women, few studies have simultaneously examined gender and menopause differences as they relate to SEP and bone health. Here, we investigated the relationship between SEP and bone mineral density (BMD) among Korean men, premenopausal women, and postmenopausal women using the BMD data set (n = 9,995) of the Korean National Health and Nutrition Examination Survey IV. The relationship between SEP and BMD was estimated using analysis of covariance (ANCOVA); adjustments were made for age and body mass index (BMI) in the multivariate models. The relationship between SEP and osteoporosis prevalence was estimated using logistic regression. Relative index of inequality (RII) in osteoporosis was estimated using log-binomial regression. ANCOVA (adjusted for age and for age plus BMI) showed a significant positive association between SEP and BMD among men and postmenopausal women. Logistic regression showed a significant negative association between SEP and osteoporosis prevalence among men and postmenopausal women but not in premenopausal women. The RII, estimated by log-binomial regression, showed the impact of SEP on osteoporosis to be significant in men and postmenopausal women (p < 0.05) but not in premenopausal women. Overall, low SEP was associated with both low BMD and high risk of osteoporosis among men and postmenopausal women. Efforts to reduce the economic burden of morbidity and mortality from osteoporosis should target men and postmenopausal women with low SEP.

Osteoporosis-related fracture case definitions for population-based administrative data

Background

Population-based administrative data have been used to study osteoporosis-related fracture risk factors and outcomes, but there has been limited research about the validity of these data for ascertaining fracture cases. The objectives of this study were to: (a) compare fracture incidence estimates from administrative data with estimates from population-based clinically-validated data, and (b) test for differences in incidence estimates from multiple administrative data case definitions.

Methods

Thirty-five case definitions for incident fractures of the hip, wrist, humerus, and clinical vertebrae were constructed using diagnosis codes in hospital data and diagnosis and service codes in physician billing data from Manitoba, Canada. Clinically-validated fractures were identified from the Canadian Multicentre Osteoporosis Study (CaMos). Generalized linear models were used to test for differences in incidence estimates.

Results

For hip fracture, sex-specific differences were observed in the magnitude of under- and over-ascertainment of administrative data case definitions when compared with CaMos data. The length of the fracture-free period to ascertain incident cases had a variable effect on over-ascertainment across fracture sites, as did the use of imaging, fixation, or repair service codes. Case definitions based on hospital data resulted in under-ascertainment of incident clinical vertebral fractures. There were no significant differences in trend estimates for wrist, humerus, and clinical vertebral case definitions.

Conclusions

The validity of administrative data for estimating fracture incidence depends on the site and features of the case definition.

Fear of falling and visual field loss from glaucoma

OBJECTIVE

To determine if visual field (VF) loss resulting from glaucoma is associated with greater fear of falling.

DESIGN

Prospective, observational study.

PARTICIPANTS

Fear of falling was compared between 83 glaucoma subjects with bilateral VF loss and 60 control subjects with good visual acuity and without significant VF loss recruited from patients followed up for suspicion of glaucoma.

METHODS

Participants completed the University of Illinois at Chicago Fear of Falling Questionnaire. The extent of fear of falling was assessed using Rasch analysis.

MAIN OUTCOME MEASURES

Subject ability to perform tasks without fear of falling was expressed in logits, with lower scores implying less ability and greater fear of falling.

RESULTS

Glaucoma subjects had greater VF loss than control subjects (median better-eye mean deviation [MD] of -8.0 decibels [dB] vs. +0.2 dB; P<0.001), but did not differ with regard to age, race, gender, employment status, the presence of other adults in the home, body mass index (BMI), grip strength, cognitive ability, mood, or comorbid illness (P ≥ 0.1 for all). In multivariate models, glaucoma subjects reported greater fear of falling as compared with controls (β = -1.20 logits; 95% confidence interval [CI], -1.87 to -0.53; P = 0.001), and fear of falling increased with greater VF loss severity (β = -0.52 logits per 5-dB decrement in the better eye VF MD; 95% CI, -0.72 to -0.33; P<0.001). Other variables predicting greater fear of falling included female gender (β = -0.55 logits; 95% CI, -1.03 to -0.06; P = 0.03), higher BMI (β = -0.07 logits per 1-unit increase in BMI; 95% CI, -0.13 to -0.01; P = 0.02), living with another adult (β = -1.16 logits; 95% CI, -0.34 to -1.99 logits; P = 0.006), and greater comorbid illness (β = -0.53 logits/1 additional illness; 95% CI, -0.74 to -0.32; P<0.001).

CONCLUSIONS

Bilateral VF loss resulting from glaucoma is associated with greater fear of falling, with an impact that exceeds numerous other risk factors. Given the physical and psychological repercussions associated with fear of falling, significant quality-of-life improvements may be achievable in patients with VF loss by screening for, and developing interventions to minimize, fear of falling.

Completion and return of fall diaries varies with participants' level of education, first language, and baseline fall risk

BACKGROUND

Consensus guidelines recommend the use of prospective fall diaries in studies of fall rates. We sought to determine the characteristics associated with return and successful completion of a falls diary and whether characteristics such as gender, education level, native language, income, and falls risk influenced self-reported fall rates.

METHODS

Two hundred and seventy people aged 65 years and older participating in a randomized controlled trial evaluating two exercise programmes. Fall diaries were collected for 6 months, then evaluated for correct completion and falls reported.

RESULTS

An increasing risk of falls was associated with a reducing odds of returning diaries (odds ratio for a one unit increase in Falls Risk Assessment Tool score 0.71, 95% confidence interval 0.53-0.96). Native English speakers were more likely to complete more than half the diaries correctly (odds ratio 2.63, 95% confidence interval 1.20-5.75).

CONCLUSIONS

Problems arise in the correct completion of falls diaries among those for whom English is not their first language. Diaries may underreport the rate of falls as those at higher risk were less likely to return diaries but more likely to report falls. Careful consideration should be given to the analysis of falls diaries as missing data are unlikely to be missing completely at random. We recommend additional training in the use of falls diaries for these groups or the utilization of simpler instruments.

Clinical risk factors for recurrent fracture after hip fracture: a prospective study

Additional fractures after hip fracture are common, but little is known about the risk factors associated with these events. We determined the clinical risk factors associated with fracture following a low-trauma hip fracture and whether clinical risk factors for subsequent fracture were modified by zoledronic acid (ZOL). In this post hoc analysis of the HORIZON Recurrent Fracture trial, 2,127 men and women were randomized within 90 days of surgical hip fracture repair to receive intravenous ZOL 5 mg yearly or placebo. All patients received a loading dose of vitamin D and daily oral calcium and vitamin D supplements. In the multivariable model age, sex, BMI, femoral neck T score, and one or more fall risk factors were significant predictors of subsequent fracture. Race, history of prior fracture other than the index hip fracture, T score < -2.5 as a dichotomous variable, and type of index hip fracture were not associated with a different risk of subsequent fractures. Treatment with ZOL did not modify the impact of these risk factors. Well-established risk factors for fracture risk such as age, sex, BMI, and fall risk factors will also contribute to fracture risk in patients who have already suffered a hip fracture, while other prior fractures and T score < -2.5 are not predictive of subsequent fractures. Baseline risk factors in hip fracture patients were predictive of fracture in both ZOL- and placebo-treated participants, and there is no difference in the risk of subsequent fractures based on index hip fracture type.

Clinical and demographic factors associated with fractures among older Americans

Medicare claims data were used to investigate associations between history of previous fractures, chronic conditions, and demographic characteristics and occurrence of fractures at six anatomic sites. The study confirmed previously established associations for hip and spine fractures and identified several new associations of interest for nonhip, nonspine fractures.

INTRODUCTION

This study investigates the associations of a history of fracture, comorbid chronic conditions, and demographic characteristics with incident fractures among Medicare beneficiaries. The majority of fracture incidence studies have focused on the hip and on white females. This study examines a greater variety of fracture sites and more population subgroups than prior studies.

METHODS

We used Medicare claims data to examine the incidence of fracture at six anatomic sites in a random 5% sample of Medicare beneficiaries during the time period 2000 through 2005.

RESULTS

For each type of incident fracture, women had a higher rate than men, and there was a positive association with age and an inverse association with income. Whites had a higher rate than nonwhites. Rates were lowest among African-Americans for all sites except ankle and tibia/fibula, which were lowest among Asian-Americans. Rates of hip and spine fracture were highest in the South, and fractures of other sites were highest in the Northeast. Fall-related conditions and depressive illnesses were associated with each type of incident fracture, conditions treated with glucocorticoids with hip and spine fractures and diabetes with ankle and humerus fractures. Histories of hip and spine fractures were associated positively with each site of incident fracture except ankle; histories of nonhip, nonspine fractures were associated with most types of incident fracture.

CONCLUSIONS

This study confirmed previously established associations for hip and spine fractures and identified several new associations of interest for nonhip, nonspine fractures.

Prior nonhip limb fracture predicts subsequent hip fracture in institutionalized elderly people

SUMMARY

This 1-year cohort study of nursing home residents revealed that historical fractures of upper limbs or nonhip lower limbs were associated with hip fracture (hazard ratio = 2.14), independent of activities of daily living (ADL), mobility, dementia, weight, and type of nursing home. Prior nonhip fractures are useful for predicting of hip fracture in institutional settings.

INTRODUCTION

The aim of this study was to evaluate the utility of fracture history for the prediction of hip fracture in nursing home residents.

METHODS

This was a cohort study with a 1-year follow-up. Subjects were 8,905 residents of nursing homes in Niigata, Japan (mean age, 84.3 years). Fracture histories were obtained from nursing home medical records. ADL levels were assessed by caregivers. Hip fracture diagnosis was based on hospital medical records.

RESULTS

Subjects had fracture histories of upper limbs (5.0%), hip (14.0%), and nonhip lower limbs (4.6%). Among historical single fractures, only prior nonhip lower limbs significantly predicted subsequent fracture (adjusted hazard ratio, 2.43; 95% confidence interval (CI), 1.30-4.57). The stepwise method selected the best model, in which a combined historical fracture at upper limbs or nonhip lower limbs (adjusted hazard ratio, 2.14; 95% CI, 1.30-3.52), dependence, ADL levels, mobility, dementia, weight, and type of nursing home independently predicted subsequent hip fracture.

CONCLUSIONS

A fracture history at upper or nonhip lower limbs, in combination with other known risk factors, is useful for the prediction of future hip fracture in institutional settings.

Educational level and osteoporosis risk in postmenopausal Moroccan women: a classification tree analysis

The objectives of this study are (1) to evaluate whether the prevalence of osteoporosis and peripheral fractures might be influenced by the educational level and (2) to develop a simple algorithm using a tree-based approach with education level and other easily collected clinical data that allow clinicians to classify women into varying levels of osteoporosis risk. A total number of 356 women with a mean age of 58.9±7.7 years were included in this study. Patients were separated into four groups according to school educational level; group 1, no education (n=98 patients); group 2, elementary level (n=57 patients); group 3, secondary level (n=138 patients) and group 4, university level (n=66 patients). We observed dose-response linear relations between educational level and mean bone mineral density (BMD). The mean BMDs of education group 1 (10.39% (lumbar spine), 10.8% (trochanter), 16.8% (wrist), and 8.8% (femoral neck)) were lower compared with those of group IV (p<0.05). Twelve percent of patient had peripheral fractures. The prevalence of peripheral fractures increased with lowered educational levels. Logistic regression analysis revealed a significant independent increase in the risk of peripheral fracture in patients with no formal education (odds ratio, 5.68; 95% , 1.16-27.64) after adjustment for age, BMI and spine BMD. Using the classification tree, four predictors were identified as the most important determinant for osteoporosis risk: the level of education, physical activity, age>62 years and BMI<30 kg/m2. This algorithm correctly classified 74% of the women with osteoporosis. Based on the area under the receiver-operator characteristic curves, the accuracy of the Classification and Regression Tree (CART) model was 0.79. Our findings suggested that a lower level of education was associated with significantly lower BMDs at the lumbar spine and the hip sites, and with higher prevalence of osteoporosis at these sites in a dose-response manner, even after controlling for the strong confounders. On the other hand, our CART algorithm based on four clinical variables may help to estimate the risk of osteoporosis in a health care system with limited resources.

Risk factors for hip fracture among institutionalised older people

BACKGROUND

risk factors for hip fracture in community-dwelling individuals have been extensively studied, but there have been fewer studies of institutionalised older people.

METHODS

a total of 1,894 older people (1,433 females, 461 males; mean age 86 years, SD 7.1 years) were recruited from 52 nursing homes and 30 intermediate-care nursing care facilities in Australia during March 1999 and February 2003. We assessed clinical risk factors for hip fracture and skeletal fragility by calcaneus broadband ultrasound attenuation (BUA) at baseline and then followed up for fracture for 4 years. Hip fractures were validated by x-ray reports. Survival analysis with age as a time-dependent covariate was used to analyse the data.

RESULTS

during a mean follow-up period of 2.65 years (SD 1.38), 201 hip fractures in 191 residents were recorded, giving an overall hip fracture incidence rate of 4.0% per person year (males 3.6% and females 4.1%). Residents living in intermediate-care hostels had a higher crude hip fracture rate (4.6% vs. 3.0%) than those living in high-care nursing homes. In multivariate analysis, an increased risk of hip fracture was significantly associated with older age, cognitive impairment, a history of fracture since age 50, lower body weight, longer lower leg length and poorer balance in intermediate-care hostel residents, but not with lower BUA.

CONCLUSIONS

institutionalised older people, who are at a higher risk of hip fracture than community-dwelling individuals, have differences in some risk factors for hip fracture that should be considered in targeting intervention programs.

Glaucoma and disability: which tasks are affected, and at what stage of disease?

PURPOSE OF REVIEW

To summarize recent work from clinical and epidemiological studies that describe how, and at what stage, glaucoma affects the performance of important vision-related activities.

RECENT FINDINGS

Difficulties with the extremes of lighting are the most frequent complaint in glaucoma. Individuals with bilateral glaucoma also self-report difficulty with a broad array of tasks, including reading, walking, and driving. Bilateral glaucoma is associated with driving cessation and limitation, bumping into objects, slower walking, and falls. Some, but not all, studies also demonstrate higher accident rates in glaucoma. Measurable effects on reading speed have only been observed with field damage severe enough to affect binocular central acuity.

SUMMARY

Glaucoma with bilateral visual field loss is associated with increased symptoms and a measurable decline in mobility and driving. Further work is necessary to establish whether unilateral glaucoma has a significant impact on patients, to determine whether reading difficulty is common in patients with bilateral glaucoma, and to establish the effects of lighting conditions on task performance in glaucoma.

2008 Santa Fe Bone Symposium: update on osteoporosis

The Ninth Annual Santa Fe Bone Symposium was held on August 1-2, 2008, in Santa Fe, New Mexico, USA. The symposium faculty presented the current best evidence on selected topics of clinical relevance in the fields of osteoporosis, metabolic bone disease, and assessment of skeletal health. The educational venues were in the form of didactic presentations, panel discussions, challenging cases, and numerous interactive discussions. Knowledge of basic science and clinical trials was applied to real-world patient scenarios that were discussed by faculty experts and clinician participants. Topics included an update on the rationale and development of new agents for the treatment of osteoporosis, the use of bone turnover markers in clinical practice, hospital-based pathways for the management of hip fracture patients, injectable bisphosphonates for the treatment of osteoporosis, combination therapy with anabolic and antiresorptive agents, and assessment of skeletal health with devices other than central dual-energy X-ray absorptiometry. This is a collection of scientific essays based on presentations and discussions at the 2008 Santa Fe Bone Symposium.

Subsequent fracture in nursing home residents with a hip fracture: a competing risks approach

OBJECTIVES

To determine the incidence and predictors of subsequent fracture in nursing home residents with a hip fracture, accounting for the competing risk of death.

DESIGN

Dynamic cohort study.

SETTING

Hebrew Rehabilitation Center, a 725-bed, long-term care facility in Boston, Massachusetts.

PARTICIPANTS

Long-term care residents with a surgically repaired hip fracture (1999-2006) followed through June 30, 2007, for the occurrence of subsequent fracture at any skeletal site.

MEASUREMENTS

Information on age, sex, anatomic location, type of repair, body mass index (BMI), comorbidities, functional status, cognitive status, and medication use were evaluated as potential risk factors for subsequent fracture.

RESULTS

The study included 184 residents with a baseline hip fracture. Thirty-nine residents (7 men, 32 women) experienced a subsequent fracture over a median follow-up of 1.1 years. After the baseline hip fracture, 6% of residents experienced a subsequent fracture within 6 months, 12% within 1 year, and 21% within 5 years. In addition, 23% of residents died within 6 months, 31% within 1 year, and 60% within 5 years. High functional status was associated with a five times greater risk of subsequent fracture (high vs low functional status, hazard ratio=5.10, P<.005). Age, sex, BMI, comorbidities, cognitive status, and medication use were not associated with subsequent fracture.

CONCLUSION

Hip fractures are a sentinel event in nursing home residents, with a high incidence of subsequent fracture and death occurring within 1 year. Identification of prefracture characteristics and postfracture complications associated with mortality should help guide secondary prevention efforts in nursing home residents.

Hip and other osteoporotic fractures increase the risk of subsequent fractures in nursing home residents

Nursing home residents with a history of hip fractures or prior osteoporotic fractures were found to have an increased risk of another osteoporotic fracture over the ensuing two years when compared to nursing home residents with no fracture history.

INTRODUCTION

Because of the high prevalence of osteoporosis and fall risk factors in nursing home residents, it is possible that the importance of previous fracture as a marker for subsequent fracture risk may be diminished. We tested whether a history of prior osteoporotic fractures would identify residents at increased risk of additional fractures after nursing home admission.

METHODS

We identified all Medicare enrollees aged 50 and older who were in a nursing home in North Carolina in 2000 (n=30,655). We examined Medicare hospitalization claims to determine which enrollees had been hospitalized in the preceding 4 years for a hip fracture (n=7,257) or other fracture (n=663). We followed participants from nursing home entry until the end of 2002 using Medicare hospital claims to determine which participants were hospitalized with a subsequent fracture (n=3,381).

RESULTS

Among residents with no recent fracture history, 6.8% had a hospital claim for a subsequent fracture, while 15.1% of those with a prior non-hip fracture and 23.9% of participants with a prior hip fracture sustained subsequent fractures. Multivariate proportional hazards models of time to fracture indicated that persons with prior hip fractures are at three times higher risk (HR=2.99, 95% CI: 2.78, 3.21) and those hospitalized with other non-hip fractures are at 1.8 times higher risk of subsequent fractures (HR=1.84, 95% CI: 1.50, 2.25).

CONCLUSION

Nursing home residents hospitalized with a prior osteoporotic fracture are at increased risk of a fracture.

BMI and low bone mass in an elderly male nursing home population

Introduction:

Little is known about osteoporosis in institutionalized older adults. Risk factors such as low body mass index (BMI) have been investigated in female populations, but remain understudied in men. The objective of this study was to examine characteristics of older men residing in a nursing home who received bone mineral density evaluations.

Methods:

57 male Miami Veterans Affairs Medical Center (VAMC) nursing home residents were screened for osteoporosis using a peripheral dual X-ray (pDXA) technique. T-scores were categorized into three groups: normal (0>–1); osteopenic (−1 to −2.49); osteoporotic (<–2.5).

Results:

Average age was 76.2 years (standard deviation = 11.5; range: 48–100). T-scores indicated that 37.3% of the population was normal, 35.6% osteopenic, and 27.1% osteoporotic. 35.6% of patients had normal BMIs, 3.4% were underweight, 47.5% were overweight, and 13.6% were considered obese. There was a high prevalence of overweight and obese individuals (61.1%) in the osteopenic and osteoporotic groups.

Conclusion:

As expected, there was a high prevalence of low bone mass in our population (62%). However, overweight and obese men were more likely to have osteoporosis and osteopenia, contrary to literature and clinical knowledge. This finding may be partially explained by the prevalence of sedentary lifestyle and relative lack of weight-bearing activity in this group of men.

Use of osteoporosis medications in older nursing facility residents

INTRODUCTION

Epidemiologic studies demonstrated that 70% to 85% of nursing home residents have osteoporosis. Few studies report comprehensive information about treatment of osteoporosis in nursing facilities.

OBJECTIVE

To determine the prevalence of osteoporosis treatment and identify resident characteristics associated with the use of antiresorptive medications or supplements indicated to treat osteoporosis in nursing homes.

METHODS

The study design was cross-sectional. The Systematic Assessment of Geriatric Drug Use via Epidemiology database provided the data. From this database, 186,221 residents were identified as newly admitted to nursing facilities in Kansas, Maine, Missouri, Ohio, and South Dakota between 1998 and 2000. The outcome measure was the use of antiresorptive medications (alendronate, risedronate, calcitonin, estrogen, raloxifene) or supplements (calcium with vitamin D) indicated for treatment of osteoporosis. The independent variables included demographic, health status, and fracture risk factors.

RESULTS

Of the overall sample, 9.1% received antiresorptive medications and/or supplements indicated for osteoporosis treatment. The most commonly used treatment was the combination of calcium and vitamin D (5.0%). Calcitonin (2.5%) use exceeded that of any other antiresorptive. Multivariable logistic regression analyses revealed that a diagnosis of osteoporosis and female gender were strongly associated with being more likely to receive an osteoporosis treatment (OR 6.34 with 95% CI 6.11-6.64 and OR 2.67 with 95% CI 2.53-2.83 respectively). The number of medications residents received was also strongly associated with receiving osteoporosis treatment. Being black and having 4 or more active diagnoses were strongly associated with lower odds of receiving treatment (OR 0.63 with 95% CI 0.57-0.68 and OR 0.71 with 95% CI 0.68-0.74 for 4 to 6 diagnoses).

DISCUSSION

Newly admitted nursing facility residents infrequently received an indicated osteoporosis treatment, including calcium with vitamin D, despite the expected high prevalence of osteoporosis in this setting. Few demographic, health status, and fracture risk factors were strongly associated with receiving indicated treatment.

Utility of the Algase Wandering Scale in an outpatient Alzheimer's disease sample

BACKGROUND

Wandering represents a major problem in the management of patients with Alzheimer's disease (AD). In this study we examined the utility of the Algase Wandering Scale (AWS), a newly developed psychometric instrument that asks caregivers to assess the likelihood of wandering behavior.

METHODS

The AWS was administered to the caregivers of 40 AD patients and total and subscale scores were examined in relation to measures of mental and functional status, depressive symptoms and medication usage.

RESULTS

AWS scores were comparable, though slightly lower, than those normative values previously published. Higher scores were associated with more severe dementia. The Negative Outcome subscale showed a significant increase in reported falls or injuries in association with anti-depressant use.

CONCLUSIONS

These data provide some construct validation for the AWS as a potentially useful scale to assess wandering behaviors in AD.

Hip and nonvertebral fracture prediction in nursing home patients: role of bone ultrasound and bone marker measurements

CONTEXT

Absolute fracture risk in nursing home patients is the highest among the communities studied. Screening for high-risk patients in such an environment is usually difficult.

OBJECTIVE

The objective was to investigate whether quantitative bone ultrasound measurements and/or markers of bone turnover/metabolism help in predicting which patients will incur hip or nonvertebral fractures.

DESIGN, SETTING, AND PARTICIPANTS

In this prospective study, mobile teams enrolled 1664 female patients from 95 nursing homes in Austria.

MAIN OUTCOME MEASURES

Calcaneal stiffness (n = 1117), radial speed of sound (SOS) (n = 1332), and phalangeal SOS (n = 1498) measurements were performed at baseline. Serum samples (n = 960) were analyzed for serum calcium and phosphate, 25 hydroxyvitamin D, PTH, osteocalcin, C-terminal telopeptide crosslinks, and osteoprotegerin (OPG). Patients were prospectively followed for hip and other nonvertebral fractures for 2 yr.

RESULTS

A total of 117 hip fractures and 269 nonvertebral fractures developed during a mean observation period of 2 yr. Prevalence of vitamin D deficiency and secondary hyperparathyroidism was high. A history of a past fracture was significantly associated with a hazard ratio (HR) of 1.47 (95% confidence interval, 1.01-2.15) and 1.65 (1.26-2.16) for the development of hip and nonvertebral fractures, respectively. Cox regression analysis revealed a multivariate adjusted elevation in both hip [HR 1.30 (1.12-1.43)] and nonvertebral [HR 1.14 (1.02-1.25)] fracture risk for each sd decrease in calcaneal stiffness. Patients in the lowest quartile for calcaneal stiffness Z-score had 2.5 and 1.2 times higher rates of hip and nonvertebral fractures when compared with patients in the highest quartile. Fracture rates were not statistically associated with baseline radial or phalangeal SOS measurements or with serum osteocalcin, C-terminal telopeptide crosslinks, and OPG concentrations. When adjusted for bone mass, higher serum OPG levels were associated with fewer hip as well as nonvertebral fractures [HR 0.85 (0.73-0.99) and 0.89 (0.80-0.99) per increment of 1]. Higher serum phosphate levels indicated an increased hip [HR 1.54 (1.07-2.21)] and nonvertebral fracture risk [HR 1.40 (1.10-1.78) per increase of 1 mg/dl]. Body mass index was protective of hip fractures [HR 0.94 (0.90-0.98) per increase of 1] as well as medication with acetylsalicylic acid [HR 0.59 (0.36-0.95) for hip and 0.72 (0.52-0.99) for nonvertebral fractures]. In contrast, current use of glucocorticoids [HR 5.65 (1.77-18.0)] and opiates [HR 1.85 (1.18-2.92)] exerted a negative effect on prospective hip fracture risk.

CONCLUSION

Calcaneal stiffness measurements proved to be useful in predicting hip fractures and to a lesser extent nonvertebral fractures in nursing home residents. Radial and phalangeal bone ultrasound measurements and baseline markers of bone turnover, however, were not indicative of future fracture risk in this population.

Lifelong risk factors for osteoporosis and fractures in elderly women with low body mass index--a population-based study

Low body weight is associated with an increased risk for osteoporosis and fractures, but the contribution of other lifestyle related factors have not been previously studied within lean elderly women. The present study evaluated the association between lifelong lifestyle factors and bone density, falls and postmenopausal fractures in elderly women with low body mass index (BMI). A population-based sample of 1,222 women aged 70 to 73 years was stratified by BMI tertiles, and all 407 women in the lowest tertile participated. Data on falls and postmenopausal fractures, physical activity, functional capacity, calcium intake, smoking, alcohol intake and medical factors at different ages were obtained by a questionnaire. Calcaneum bone mass as broadband ultrasound attenuation (BUA) was assessed with a quantitative ultrasound (QUS) device, and bone mineral density (BMD) at the distal radius was measured with a dual-energy X-ray absorptiometry (DXA). Low current physical activity was associated with lower calcaneum BUA and factors associated with higher BUA were body weight, low lifetime occupational physical activity, hormone replacement and type 2 diabetes. Weight, type 2 diabetes and thiatzide use were associated with higher radius BMD. The final multivariate model consisted of four independent factors associated with fractures: low lifetime habitual physical activity (OR 3.7, 95% CI 1.9-7.1), diabetes (OR 0.2, 95% CI 0.1-1.0), living alone (OR 1.7, 95% CI 1.0-3.0) and calcaneum BUA (1.8, 95% CI 1.3-2.4). Poor functional ability and symptoms of depression were associated with recent falling. In elderly women with low BMI, lifelong physical activity may protect from fractures, while low calcaneum bone mass and living unpartnered appear to be associated with an increased risk for fractures. Poor functional ability and presence of depression may be associated with risk of falling. Type 2 diabetes may modify the risk of low bone mass and low-trauma postmenopausal fractures. Albeit that the results of this study need to be confirmed in prospective follow-up studies, multifactorial program with the emphasis on physical and social activation in the primary care setting for preventing falls and fractures in lean elderly women is recommended.

Risk factors for fractures in older men and women: The Leisure World Cohort Study

BACKGROUND

Osteoporosis results in >1.5 million fractures in the United States each year, leading to substantial health care costs and loss of quality of life. One major gap in our knowledge is how to effectively identify individuals at risk of developing a fracture.

OBJECTIVE

We examined a population-based cohort for risk factors for fractures of the hip, wrist, and spine in men and women.

METHODS

The Leisure World Cohort Study was established between 1981 and 1985 when residents of a southern California retirement community completed a postal health survey. Multiple lifestyle, medical, attitudinal, and anthropomorphic factors were self-reported. Fractures were identified from 4 follow-up surveys, hospital discharge records, and death certificates. Fracture rates were determined separately for men and women. Cox proportional hazards regression was used to identify predictors of fracture.

RESULTS

Incident fractures of the hip (n = 1,227), wrist (n = 445), and spine (n = 729) incurred over the course of 2 decades were identified in the 13,978 residents surveyed. Mean (SD) age at entry was 74.9 (7.2) years for men and 73.7 (7.4) years for women. The most important risk factors for fracture were the same in men and women: age increased risk of hip and spine fractures (hazard ratio [HR] = 2.3-3.2 per 10 years) and history of fracture increased fracture risk at all 3 sites (HR = 1.4-3.2). In both men and women, glaucoma was a significant risk factor for hip fracture (HR = 1.9 and 1.3, respectively), and smoking was a risk factor for hip and spine fractures. Men and women with a positive mental attitude had fewer hip and spine fractures (HR = 0.7-0.9). High body mass index was protective at all 3 fracture sites in women (HR = 0.7-0.8), but those who used vitamin A supplements had increased rates of hip and wrist fracture (HR = 1.1 per 10,000 IU per day).

CONCLUSIONS

Attitude, lifestyle choices, and the presence of medical conditions may influence the rate of osteoporotic fracture in older women and men and may help identify individuals at high risk.

Risk factors of osteoporosis in institutionalized older Thai people

INTRODUCTION

There are very few published studies on osteoporosis among the institutionalized elderly in Asian countries, where the incidence of osteoporosis is increasing rapidly. Our objectives were to determine both the prevalence and risk factors of osteoporosis, as assessed by calcaneal bone mineral density (BMD) measurements, in a Thai nursing home.

METHODS

Activities of daily living, the Mini-Mental State Examination, blood chemistry, body composition analysis, calcaneal quantitative ultrasound (QUS) and serum C-terminal telopeptides of type I collagen (serum beta-CTx) were assessed in 108 older people living in the largest nursing home for the elderly in Bangkok. Calcaneal BMD was measured by dual-energy X-ray absorptiometry (DXA).

RESULTS

The prevalence of osteoporosis, as defined by a calcaneal BMD T-score <1.6, was 79.6%. The prevalence of low bone mass, as defined by a T-score of broadband ultrasound attenuation <1.0, was 80.6%. The prevalence of osteoporosis detected by these two methods was not significantly different (p=1.00). The prevalence of increased bone turnover [with the cutoff point being the mean + 2 standard deviation (SD) of the serum beta-CTx level of a sex- and age-matched control group] was 13.9%. In multiple linear regression analysis, five risk factors -- serum beta-CTx, mental health, mobility index, height and lean body mass -- were able to predict calcaneal BMD at a coefficient of determination R(2)) of 0.54.

CONCLUSIONS

These results indicate the importance of mental health and self-care ability as factors associated with osteoporosis. Increased bone turnover was also a significant risk factor of low bone mass. Calcaneal QUS was a useful screening tool for diagnosing osteoporosis in this population and was comparable to calcaneal DXA.