Associations of Multiple Chronic Conditions With Physical Performance and Falls Among Older Adults With Back Pain: A Longitudinal, Population-based Study

Derivation of clinical prediction rules for assessing fall risk among community-dwelling older adults: A prospective cohort study

This prospective cohort study aimed to derive clinical prediction rules (CPRs) to assess fall risk within 1 year of a baseline measurement and identify fall-risk subgroups in community-dwelling older adults. Data from 129 community-dwelling older adults aged ≥60 years were analyzed. CPRs were derived for participants who completed the 1-year follow-up (main analysis) and those without a fall history in the past year (subanalysis). When the total CPR score was 3 points (age ≥77 years; fall history, yes; one-leg standing test [OLST] ≤3.8 s), the positive likelihood ratio was 13.35, and the fall rate increased from 31.0 % to 85.7 % in the main analysis. When the total CPR score was 2 points (body mass index ≥23.3 kg/m2; OLST ≤3.9 s), the positive likelihood ratio was 17.65; the fall rate increased from 23.8 % to 84.6 % in the subanalysis. These CPRs can be used to identify fall-risk subgroups among community-dwelling older adults.

Personality and Markers of Lower Extremity Function: Findings From Six Samples

ObjectivesThis study investigated the associations between Five-Factor Model personality traits and balance impairment and lower limb strength.MethodsMiddle-aged and older adults (Age range: 34-104 years; N >27,000) from six large samples from the US and England were assessed for standing balance, lower limb strength, personality traits, sociodemographic, and health-related variables.ResultsHigher extraversion, openness, agreeableness, and conscientiousness were related to lower balance impairment risk and better lower limb strength. Higher neuroticism was associated with higher risk of balance impairment and with weaker lower limb strength. Biological, clinical, behavioral, and psychological factors partially accounted for these associations between personality and risk of balance impairment. Depressive symptoms and physical activity partially mediated the associations between personality traits and limb strength.DiscussionPersonality traits have replicable associations with lower extremity functions. The study identifies potential moderators and mediators of these associations.

Predicting persistent back pain causing severe interference with daily activities among community-dwelling older adults: the OPAL cohort study

BACKGROUND

Many older adults experience disabling back and leg pain. This study aimed to identify factors associated with back pain causing severe interference with daily activities over 2 years.

METHODS

Participants were 2,109 community-dwelling adults (aged 65-100 years; mean age 74.2 (SD 6.3)) enrolled in a prospective cohort study who reported back pain at baseline and provided back pain data at 2 years follow-up. Baseline data included demographics, socio-economic factors, back pain presentation and age-associated adverse health states (e.g. frailty, falls, walking confidence). At 2 years follow-up, we asked if they were currently experiencing back pain and if so, asked participants to rate how much their back pain interfered with their daily activities on a scale of 0-10. Severe back pain interference was defined by a rating of 7 or more. The association between baseline factors and severe back pain interference at two years was assessed using logistic regression models.

RESULTS

At two years, 77% of participants (1,611/2,109) still reported back pain, 25% (544/2,083) also reported leg pain and 14% (227/1,611) reported severe back pain interference with activities. Improvements in symptoms were observed over the two years follow-up in 880/2,109 participants (41.7%), 41.2% (869/2,109) of participants report no change and worsening symptoms was reported by 17.1% (360/2109) of participants. After adjusting for back pain troublesomeness at baseline, factors associated with reporting severe interference were adequacy of income (careful with money [OR 1.91; 95% CI 1.19-3.06]; prefer not to say [OR 2.22; 95% CI 1.11-4.43]), low endorsement of exercise in later life (OR 1.18; 95% CI 1.02-1.37), neurogenic claudication symptoms (OR 1.68 (95% CI 1.15-2.46)], multisite pain (OR 1.13; 95% CI 1.02-1.24) and low walking confidence (OR 1.15; 95% CI 1.08-1.22).

CONCLUSION

After adjusting for baseline pain severity, we identified five factors that were associated with severe pain limitation at two years follow-up among a cohort of community dwelling older people reporting back and leg pain. These included other pain characteristics, walking confidence and attitude to activity in later life. We also identified a socioeconomic factor (perceived adequacy of income). Future research should focus on whether identifying individuals using these risk factors in order to intervene improves back pain outcomes for older people.

Associations of Co-Occurring Chronic Conditions With Use of Rehabilitation Services in Older Adults With Back Pain: A Population-Based Cohort Study

OBJECTIVE

The objective was to examine the associations of number and type of chronic conditions with the use of rehabilitation services among older adults with bothersome back pain.

METHODS

We conducted a cohort study using the National Health and Aging Trends Study, a longitudinal survey of Medicare beneficiaries ≥65 years. We included community-dwelling older adults with bothersome back pain in 2015. We assessed 12 self-reported chronic conditions, including arthritis, depression, and anxiety. We used 2016 data to ascertain self-reported use of any rehabilitation services in the prior year. We used weighted, logistic regression to examine the association of conditions with rehabilitation use.

RESULTS

The sample size was 2443. A majority were age ≥75 years (59%); female (62%); and White, non-Hispanic (71%). The median number of chronic conditions was 3 (interquartile range, 2-4). Arthritis was the most common chronic condition (73%); 14% had anxiety; and 16% had depression. For every additional chronic condition, adjusted odds of any rehabilitation use increased 21% (Odds Ratio = 1.21, 95% CI = 1.11-1.31). Those with ≥4 chronic conditions had 2.13 times higher odds (95% CI = 1.36-3.34) of any rehabilitation use in the next year versus those with 0-1 condition. Participants with arthritis had 1.96 times higher odds (95% CI = 1.41-2.72) of any rehabilitation use versus those without arthritis. Anxiety and depression were not significantly associated with rehabilitation use.

CONCLUSIONS

Among older adults with back pain, a greater number of chronic conditions and arthritis were associated with higher use of rehabilitation services. Those with anxiety or depression had no difference in their use of rehabilitation care versus those without these conditions.

IMPACT

This pattern suggests appropriate use of rehabilitation for patients with back pain and multiple chronic conditions based on greater need, but there may be potential underuse for those with back pain and psychological conditions.

Effects of multimorbidity and polypharmacy on physical function in community-dwelling older adults: A 3-year prospective cohort study from the SONIC

BACKGROUND

We prospectively examined the effect of baseline multimorbidity and polypharmacy on the physical function of community-dwelling older adults over a three-year period.

METHODS

The analysis included 1,401 older adults (51.5 % women) who participated in both wave 1 and wave 2 (3-year follow-up) of the Septuagenarians, Octogenarians, and Nonagenarians Investigation with Centenarians (SONIC) study. Grip strength and walking speed were binarized into poor/not poor physical function according to the frailty definition. The number of chronic conditions and the number of prescribed medications were categorized into 3 and 4 groups, respectively. Multivariable logistic regression was used to examine associations between the number of chronic conditions, medication use at baseline, and poor physical function over a three-year period.

RESULTS

After adjusting for confounding factors, hyperpolypharmacy (≥ 10 medications) demonstrated associations with weak grip strength (adjusted odds ratio [aOR] = 2.142, 95 % confidence interval [CI] = 1.100-4.171) and slow walking speed (aOR = 1.878, 95 % CI = 1.013-3.483), while co-medication (1-4 medications) was negatively associated with slow walking speed (aOR = 0.688, 95 % CI = 0.480-0.986). There was no significant association between the number of chronic conditions and physical function.

CONCLUSION

The findings suggest that the number of medications can serve as a simple indicator to assess the risk of physical frailty. Given that many older individuals receive multiple medications for extended durations, medical management approaches must consider not only disease-specific treatment outcomes but also prioritize drug therapy while actively avoiding the progression towards frailty and geriatric syndromes.

Utilization and Potential Disparities in Access to Physical Therapy for Spine Pain in the Long-Term Care Population

OBJECTIVE

To determine the frequency of physical therapy (PT) services and potential disparities in receiving PT among Medicare fee-for-service beneficiaries with a history of spine pain who live in long-term care (LTC) settings.

DESIGN

Secondary cross-sectional analysis of Medicare administrative data on beneficiaries with a history of spine pain from 2017-2019. We identified LTC residents using a validated algorithm, then identified and described PT episodes that occurred after the LTC index date. To identify potential disparities in access to PT services, we performed multivariable logistic regression to determine resident demographic, clinical, and community factors associated with receiving PT.

SETTING

Not applicable.

PARTICIPANTS

Medicare fee-for-service LTC residents aged ≥65 years.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

Receiving PT services.

RESULTS

Of the 999,495 LTC residents with a history of spine pain, 49.6% received PT. Only 12.1% of PT episodes specifically treated spine pain. The odds of receiving PT were higher for residents with pain in multiple spine regions or neuropathic pain (OR, 1.27; 95% confidence interval CI, 1.26-1.29) and for residents with inpatient admissions (OR, 1.76; 95% CI, 1.75-1.78). Odds of receiving PT were lower for residents from minoritized racial and ethnic groups, and for residents with dementia (OR, 0.89; 95% CI, 0.88-0.90), depression (OR, 0.95; 95% CI, 0.94-0.96), or who lived in urban or more socioeconomically deprived areas.

CONCLUSIONS

Although nearly half of LTC residents with histories of spine pain received PT services, most PT was not for spine pain. There are potential disparities in access to PT for LTC residents from minoritized groups living in urban and more deprived areas. Further work should examine PT outcomes and remove barriers to PT for LTC residents with histories of spine pain.

Association between Multimorbidity and Risk of Falls and Fear of Falling among Older Adults: The Mediation Effect of Physical Function, Use of Sleeping Pills, and Pain Relievers

OBJECTIVE

Falls and fear of falling (FoF) are relevant contributors to disability and institutionalization among older adults. The aim was to examine the association between multimorbidity and falls/FoF among community-dwelling older adults, exploring the mediating effect of physical function and the use of sleeping pills and pain relievers.

DESING

Longitudinal analyses.

SETTING AND PARTICIPANTS

A total of 1824 adults aged ≥65 years from the Seniors-ENRICA II cohort (Spain).

METHODS

Multimorbidity was defined as having ≥2 diseases from a predefined list of 13 chronic conditions extracted from clinical records. Falls were self-reported and FoF was estimated using the Short Falls Efficacy Scale International. Adjusted odds ratios (ORs) and 95% confidence intervals (CIs) were estimated for the association between multimorbidity/duration of multimorbidity and incident falls/FoF using logistic regression models. The mediating effects of physical function, the use of sleeping pills, and pain relievers were explored using the Karlson Holm Breen method.

RESULTS

Multimorbidity was associated with a higher risk of falls (OR, 1.44; 95% CI, 1.14-1.82) and FoF (OR, 1.88; 95% CI, 1.48-2.39). Positive dose-response associations were found between the duration of multimorbidity and the risk of falls (P-trend = .003) and FoF (P-trend = .001). Physical function mediated 5.67% and 5.25% of these associations, respectively, and the use of sleeping pills explained a larger proportion of the associations (9.27% and 11.61%). Last, the mediation effect of pain relievers on the association between multimorbidity and falls was 3.05% and 9.31% in the multimorbidity-FoF association.

CONCLUSIONS AND IMPLICATIONS

Multimorbidity was associated with a higher risk of falls/FoF among Spanish community-dwelling older adults. Use of sleeping pills was a relevant mediator, suggesting that interventions on sleep problems have the potential to reduce the burden of falls/FoF and their consequences among older adults with multimorbidity.

Cognitive impairment is a risk factor for decreased physical performance in the elderly

Background

This study aimed to show a 3-year trajectory of physical performance among Chinese elderly in Beijing communities and explore the associations between new adverse events during the 3-year follow-up period and decreased physical performance.

Methods

A longitudinal observational study included baseline data and transitional information of physical performance from 456 community elders (mean age 67.3 ± 4.9 years, female 43.2 %) at a 3-year follow-up. The Mini-Mental State Examination (MMSE) and the Short Physical Performance Battery (SPPB) were used to measure cognition and physical performance, respectively. The number of chronic diseases, cognitive impairment, malnutrition, depression, knee pain, falls, and frailty were the principal independent variables in multivariate logistic regression analysis.

Results

The proportion of the elderly with poor physical performance (26.97 %) increased to 42.11 % and the proportion of those with good physical performance (44.96 %) dropped to 30.48 % after the three-year follow-up. As for physical performance transitions, 39.47 % of the elderly progressed to a worsening physical status. After adjustment for covariates, only new onset cognitive impairment (OR: 5.17; 95%CI: 2.01-14.54; P = 0.001) was associated with physical performance deterioration.

Conclusion

Cognitive impairment is an independent risk factor for decreased physical performance in elderly people. Active interventions targeted at cognitive impairment could help promote healthy aging.

Fear of Falling: Exploring Associated Factors among Elderly Residents in the Rural Communities of Vietnam

This research aimed to explore factors associated with the fear of falling (FOF) among community-dwelling older adults in Vietnam. A cross-sectional study was conducted in five communes in Soc Son, Hanoi, Vietnam, from March to June 2017. We recruited a total of 487 participants, which provided sufficient data for analysis. The outcome variable was fear of falling. Several covariates, including demographics, medical history, general health status, geriatric syndromes, eye diseases, assessment of fall risk environment, timed up-and-go test, and number of standing up in 30 s, were collected. A multivariable logistic regression model was performed to determine predictors associated with FOF. The results showed that 54.6% of the participants had FOF. Furthermore, the logistic multivariable regression model revealed several factors associated with FOF among participants in the research sites, including polypharmacy status (OR: 1.79; 95%CI 1.07-2.99), higher scores in quality of life according to the EQ-5D-5L index (OR:6.27; 95%CI: 2.77-14.17), and having fallen during the past 12 months (OR:4.4; 95%CI: 2.39-8.11). These findings contribute to a comprehensive understanding of the intricate relationship between FOF and several associated factors, notably polypharmacy status, quality of life, and having a fall during the past 12 months.

Physical Activity, Social Participation, and Pain Outcomes Among Community-Dwelling Older Adults

BACKGROUND

Little is known regarding the effect of social participation (SP) and physical activity (PA) on pain outcomes among community-dwelling older adults in the United States.

AIMS

To determine whether SP and PA are associated with pain outcomes (bothersome pain and number of pain sites).

DESIGN

Guided by the biopsychosocial model of chronic pain for older adults, we analyzed data from 7,187 community dwelling participants in the National Health and Aging Trends Study. In cross-sectional analyses, we utilized logistic and negative binomial regressions.

METHODS

We prospectively assessed the association between SP/ PA and new or worsening pain from baseline (2011) to 2021 using a discrete time survival analysis by logistic regression, controlling for sociodemographic and health characteristics.

RESULTS

At baseline, participation in 5 SP activities per month versus no activities, and performing any PA compared with no PA were significantly associated with lower likelihood of bothersome pain. Although SP and PA were associated with reporting fewer pain sites at baseline, SP was not associated with developing new or worsening pain, prospectively. However, walking and vigorous exercise compared with no PA was significantly associated with a 10% lower risk of developing new or worsening pain (adj odds ratio 0.90, 95% confidence interval [CI] 0.82-0.98).

CONCLUSIONS

Physical activity but not social participation may protect against development of new or worsening pain. More research is needed to determine whether social activity can be beneficial for pain prevention and management. Efforts to promote physical activity among older adults may reduce risk of new or worsening pain.

The influence of comorbidities on outcomes for older people with back pain: BACE-D cohort study

BACKGROUND

Comorbidities are common in older people with back pain but little is known about the influence of comorbidities on outcomes.

OBJECTIVES

To explore the influence of the most prevalent comorbidities, and the number of comorbidities, on short (at 3 months) and long-term (at 12 months) outcomes of back pain in older people.

METHODS

We analyzed data from the 'Back Complaints in the Elders' Dutch study cohort (BACE-D) and included participants aged >55 years. We used the modified Self-Administered Comorbidities Questionnaire (SCQ), the Numeric Rating Scale (NRS) and the Roland-Morris Disability Questionnaire (RMDQ) to assess the number of comorbidities, pain intensity and back-related physical functioning, respectively. We conducted separate linear regression models to analyze the association between comorbidities and outcomes including potential confounders of age, sex, body mass index, smoking and alcoholic drinking status, back pain history, and baseline NRS and RMDQ scores.

RESULTS

Our study included 669 participants with a mean age of 66.5 (SD 7.7) years of whom 394 were female. More comorbidities were positively associated with higher pain intensity (3-month regression coefficient (β) =0.27, 95% CI 0.14-0.39; 12-month β = 0.31, 95% CI 0.17-0.45) and worse physical functioning (3-month β = 0.54, 95% CI 0.31-0.77; 12-month β = 0.64, 95% CI 0.37-0.92). Four of the 5 commonest comorbidities were musculoskeletal problems. Older participants with musculoskeletal comorbidities had higher pain intensity (3-month β = 0.89 95% CI 0.41-1.37; 12-month β = 1.17, 95% CI 0.65-1.69), and worse physical functioning (3-month β = 1.61, 95% CI 0.71-2.52; 12-month β = 1.85, 95% CI 0.82-2.89, P-value < 0.001) compared to participants without musculoskeletal comorbidities.

CONCLUSIONS

More comorbidities are associated with worse back pain outcomes in older adults. Participants with musculoskeletal comorbidities had worse back pain outcomes than those without.

A descriptive study of physical function and performance in older black men with low back pain

The purpose of this paper is to describe physical function and performance scores and examine the relationships between measures of physical performance in older Black men with low back pain. The Mobility, Aging, Pain, and Disparities study used a cross-sectional, observational design to objectively measure physical performance on the Short Physical Performance Battery (SPPB), the Back Performance Scale (BPS), and the 400-meter Walk Test along with subjective ratings of pain intensity in the past 24 hours. Sixty community-based Black men aged 61-87 (x̄= 70 ± 6) years had an average BPS score of 7.0 ± 4 and total score on the SPPB 8.5 ± 2.1. Average 400-meter Walk time was 6.3 ± 3.1 minutes. Men's average pain intensity in the past 24 hours was 5.7 ± 2, indicating moderate pain. In conclusion, older Black men with low back pain demonstrated low physical function scores and a higher level of disability.

Socioeconomic status, mental health, and nutrition are the principal traits for low back pain phenotyping: Data from the osteoarthritis initiative

Background

Low back pain (LBP) is a heterogeneous disease with biological, physical, and psychosocial etiologies. Models for predicting LBP severity and chronicity have not made a clinical impact, perhaps due to difficulty deciphering multidimensional phenotypes. In this study, our objective was to develop a computational framework to comprehensively screen metrics related to LBP severity and chronicity and identify the most influential.

Methods

We identified individuals from the observational, longitudinal Osteoarthritis Initiative cohort (N = 4796) who reported LBP at enrollment (N = 215). OAI descriptor variables (N = 1190) were used to cluster individuals via unsupervised learning and uncover latent LBP phenotypes. We also developed a dimensionality reduction algorithm to visualize clusters/phenotypes using Uniform Manifold Approximation and Projection (UMAP). Next, to predict chronicity, we identified those with acute LBP (N = 40) and persistent LBP over 8 years of follow-up (N = 66) and built logistic regression and supervised machine learning models.

Results

We identified three LBP phenotypes: a "high socioeconomic status, low pain severity group", a "low socioeconomic status, high pain severity group", and an intermediate group. Mental health and nutrition were also key clustering variables, while traditional biomedical factors (e.g., age, sex, BMI) were not. Those who developed chronic LBP were differentiated by higher pain interference and lower alcohol consumption (a correlate to poor physical fitness and lower soceioeconomic status). All models for predicting chronicity had satisfactory performance (accuracy 76%-78%).

Conclusions

We developed a computational pipeline capable of screening hundreds of variables and visualizing LBP cohorts. We found that socioeconomic status, mental health, nutrition, and pain interference were more influential in LBP than traditional biomedical descriptors like age, sex, and BMI.

Prospective Association between Multimorbidity and Falls and Its Mediators: Findings from the Irish Longitudinal Study on Ageing

This study including older adults from Ireland aimed to analyze the prospective association between multimorbidity and falls and to identify the mediators in this relationship. The present study used data from two consecutive waves of the Irish Longitudinal Study on Ageing (TILDA) survey. Multimorbidity was assessed at Wave 1 (2009–2011) and was defined as the presence of at least two chronic conditions. Falls occurring at Wave 2 (2012–2013) were self-reported. Mediating variables considered were polypharmacy, cognitive impairment, sleep problems, pain, low handgrip strength, difficulty in activities of daily living (ADL), obesity, and underweight. Multivariable binary logistic regression and mediation analysis using the Karlson Holm Breen method were conducted. This study included 6900 adults aged ≥50 years (51.6% women; mean [SD] age 63.1 [8.9] years). Compared to no chronic conditions at baseline, there was a positive and significant association between multimorbidity and falls at follow-up, with ORs ranging from 1.32 (95% CI = 1.06–1.64) for 2 conditions to 1.92 (95% CI = 1.54–2.38) for ≥4 conditions. Pain (23.5%), polypharmacy (13.3%), and difficulty in ADL (10.7%) explained the largest proportion of the multimorbidity-fall relationship. Multimorbidity increased risk for incident falls in older adults from Ireland. Interventions should be implemented to reduce fall risk in people with multimorbidity, especially targeting the identified mediators.

Classification of Geriatric Low Back Pain Based on Hip Characteristics With a 12-Month Longitudinal Exploration of Clinical Outcomes: Findings From Delaware Spine Studies

OBJECTIVE

The purpose of this study is to identify geriatric chronic low back pain (LBP) subgroups based on the presence of potentially modifiable hip impairments, using Latent Variable Mixture Modeling (LVMM), and to examine the prospective relationship between these subgroups and key outcomes over time.

METHODS

Baseline, 3-month, 6-month, and 12-month data were collected from a prospective cohort of 250 community-dwelling older adults with chronic LBP. Comprehensive hip (symptoms, strength, range of motion, and flexibility), LBP (intensity and disability), and mobility function (gait speed and 6-Minute Walk Test) examinations were performed at each timepoint. Baseline hip measures were included in LVMM; observed classes/subgroups were compared longitudinally on LBP and mobility function outcomes using mixed models.

RESULTS

Regarding LVMM, a model with 3 classes/subgroup fit best. Broadly speaking, subgroups were differentiated best by hip strength and symptom presence: subgroup 1 = strong and nonsymptomatic, subgroup 2 = weak and nonsymptomatic, and subgroup 3 = weak and symptomatic (WS). Regarding longitudinal mixed models, all subgroups improved in most outcomes over time. Specifically, over 12 months, the nonsymptomatic subgroups had lower LBP intensity and disability levels compared with the WS subgroup, whereas the strong and nonsymptomatic subgroup had better mobility function than the 2 "weak" subgroups.

CONCLUSION

These subgroup classifications may help in tailoring specific interventions in future trials. Special attention should be given to the WS subgroup given their consistently poor LBP and mobility function outcomes.

IMPACT

Among older adults with chronic low back pain, there are 3 hip subgroups: "strong and nonsymptomatic," "weak and nonsymptomatic," and "weak and symptomatic." People in these subgroups demonstrate different outcomes and require different treatment; proper identification will result in tailored interventions designed to benefit individual patients. In particular, people in the WS subgroup deserve special attention, because their outcomes are consistently poorer than those in the other subgroups.