Predictors of preventable nursing home hospitalizations: the role of mental disorders and dementia

Exploring Predictive Factors for Potentially Avoidable Emergency Department Transfers: Findings From the FINE Study

OBJECTIVES

To assess the prevalence of potentially avoidable transfers (PAT) and identify factors associated with these transfers to emergency departments (EDs) among nursing home (NH) residents.

DESIGN

This is a secondary outcome analysis of the FINE study, a multicenter observational study collecting data on NH residents, NH settings, and contextual factors of ED transfers.

SETTINGS AND PARTICIPANTS

NHs in the former Midi-Pyrénées region of the southwest of France (n = 312); a total of 1037 NH residents who experienced ED transfers (n = 1017) between January 2016 and December 2016.

METHODS

The analysis included resident baseline characteristics and NH and transfer decision-making characteristics. An expert group categorized the transfer status as either PAT or unavoidable. Multivariable analysis using a mixed logistic model, accounting for intra-NH correlation, was conducted to assess factors independently associated with PAT.

RESULTS

Among 1017 included transfers, 87.02% (n = 885) were identified as PAT and 12.98% (n = 132) unavoidable transfers. Multivariable analysis revealed that the following patient-related factors were associated with a likely high rate of PAT: usual behavior disturbances before transfer, including productive trouble (OR 2.04, 95% CI 1.25-3.33; P = .0044) and unusual symptom of falling during the week preceding the transfer (OR 4.55, 95% CI 1.76-11.82; P = .0019). On the other hand, distance between ED and NH (OR 0.98, 95% CI 0.97-0.998; P = .0231), NH staff trained in palliative care in the last 3 years (OR 0.52, 95% CI 0.29-0.95; P = .0324), the impossibility of direct hospitalization to an appropriate unit (OR 0.54, 95% CI 0.34-0.87; P = .0117), and the resident Charlson Comorbidity Index (OR 0.90, 95% CI 0.82-0.99; P = .0369) were associated with a lower probability of PAT.

CONCLUSION AND IMPLICATIONS

Transfers from NHs to hospital EDs were frequently potentially avoidable, meaning that there are still significant opportunities to reduce PAT. Our findings may help to specifically identify interventions that should be targeted at both NH and resident levels.

Facility staffing associated with potentially avoidable hospitalizations in nursing home residents in Japan: a retrospective cohort study

BACKGROUND

Wide variations in facility staffing may lead to differences in care, and consequently, adverse outcomes such as hospitalizations. However, few studies focused on types of occupations. Therefore, we aimed to examine the association between a wide variety of facility staffing and potentially avoidable hospitalizations of nursing home residents in Japan.

METHODS

In this retrospective cohort study using long-term care and medical insurance claims data in Ibaraki Prefecture from April 2018 to March 2019, we identified individuals aged 65 years and above who were newly admitted to nursing homes. In addition, facility characteristic data were obtained from the long-term care insurance service disclosure system. Subsequently, we conducted a multivariable Cox regression analysis and evaluated the association between facility staffing and potentially avoidable hospitalizations.

RESULTS

A total of 2909 residents from 235 nursing homes were included. The cumulative incidence of potentially avoidable hospitalizations at 180 days was 14.2% (95% confidence interval [CI] 12.7-15.8). Facilities with full-time physicians (adjusted hazard ratio [HR]: 0.59, 95% CI: 0.37-0.94) and a higher number of dietitians (HR: 0.72, 95% CI: 0.54-0.97) were significantly associated with a lower likelihood of potentially avoidable hospitalizations. In contrast, having nurses or trained caregivers during the night shift (HR: 1.72, 95% CI: 1.25-2.36) and a higher number of care managers (HR: 1.37, 95% CI: 1.03-1.83) were significantly associated with a high probability of potentially avoidable hospitalizations.

CONCLUSIONS

We revealed that variations in facility staffing were associated with potentially avoidable hospitalizations. The results suggest that optimal allocation of human resources, such as dietitians and physicians, may be essential to reduce potentially avoidable hospitalizations. To provide appropriate care to nursing home residents, it is necessary to establish a system to effectively allocate limited resources. Further research is warranted on the causal relationship between staff allocation and unnecessary hospitalizations, considering the confounding factors.

Incipient dementia and avoidable hospital admission in persons with osteoarthritis

Objective

To investigate the associations between incipient dementia (ID) and hospitalization for ambulatory care sensitive conditions (ACSCs) among people with osteoarthritis (OA) of the peripheral joints.

Methods

Among individuals aged 51-99 years residing in Skåne, Sweden, in 2009, we identified those with a doctor-diagnosed OA and no dementia during 1998-2009 (n ​= ​57,733). Treating ID as a time-varying exposure, we followed people from January 1, 2010 or their 60th birthday (whichever occurred last) until hospitalization for ACSCs, death, 100th birthday, relocation outside Skåne, or December 31, 2019 (whichever occurred first). Using age as time scale, we applied flexible parametric survival models, adjusted for confounders, to assess the associations between ID and hospitalization for ACSCs.

Results

There were 58 and 33 hospitalizations for ACSCs per 1000 person-years among OA people with and without ID, respectively. The association between ID and hospitalization for any ACSCs was age-dependent with higher risk in ages<86 years and lower risks in older ages. Between ages 60 and 100 years, persons with ID had, on average, 5.8 (95% CI 0.9, 10.7), 1.6 (-2.6, 5.9) and 3.1 (2.3, 4.0) fewer hospital-free years for any, chronic and acute ACSCs, respectively, compared with persons without ID.

Conclusions

Among persons with OA, while ID was associated with increased risks of hospitalization for ACSCs in younger ages, it was associated with decreased risk in oldest ages. These results suggest the need for improvement in quality of ambulatory care including the continuity of care for people with OA having dementia.

Factors associated with increased Emergency Department transfer in older long-term care residents: a systematic review

The proportion of adults older than 65 years is rapidly increasing. Care home residents in this age group have disproportionate rates of transfer to the Emergency Department (ED) and around 40% of attendances might be avoidable. We did a systematic review to identify factors that predict ED transfer from care homes. Six electronic databases were searched. Observational studies that provided estimates of association between ED attendance and variables at a resident or care home level were included. 26 primary studies met the inclusion criteria. Seven common domains of factors assessed for association with ED transfer were identified and within these domains, male sex, age, presence of specific comorbidities, polypharmacy, rural location, and care home quality rating were associated with likelihood of ED transfer. The identification of these factors provides useful information for policy makers and researchers intending to either develop interventions to reduce hospitalisations or use adjusted rates of hospitalisation as a care home quality indicator.

Factors Associated with Potentially Inappropriate Transfer to the Emergency Department among Nursing Home Residents

OBJECTIVES

To determine the factors associated with the potentially inappropriate transfer of nursing home (NH) residents to emergency departments (EDs) and to compare hospitalization costs before and after transfer of individuals addressed inappropriately vs those addressed appropriately.

DESIGN

Multicenter, observational, case-control study.

SETTING AND PARTICIPANTS

17 hospitals in France, 1037 NH residents.

MEASURES

All NH residents transferred to the 17 public hospitals' EDs in southern France were systematically included for 1 week per season. An expert panel composed of family physicians, emergency physicians, geriatricians, and pharmacists defined whether the transfer was potentially inappropriate or appropriate. Residents' and NHs' characteristics and contextual factors were entered into a mixed logistic regression to determine factors associated independently with potentially inappropriate transfers. Hospital costs were collected in the national health insurance claims database for the 6 months before and after the transfer.

RESULTS

A total of 1037 NH residents (mean age 87.2 ± 7.1, 68% female) were transferred to the ED; 220 (21%) transfers were considered potentially inappropriate. After adjustment, anorexia [odds ratio (OR) 2.41, 95% confidence interval (CI) 1.57-3.71], high level of disability (OR 0.90, 95% CI 0.81-0.99), and inability to receive prompt medical advice (OR 1.67, 95% CI 1.20-2.32) were significantly associated with increased likelihood of potentially inappropriate transfers. The existence of an Alzheimer's disease special care unit in the NH (OR 0.66, 95% CI 0.48-0.92), NH staff trained on advance directives (OR 0.61, 95% CI 0.41-0.89), and calling the SAMU (mobile emergency medical unit) (OR 0.47, 95% CI 0.34-0.66) were significantly associated with a lower probability of potentially inappropriate transfer. Although the 6-month hospitalization costs prior to transfer were higher among potentially inappropriate transfers compared with appropriate transfers (€6694 and €4894, respectively), transfer appropriateness was not significantly associated with hospital costs.

CONCLUSIONS AND IMPLICATIONS

Transfers from NHs to hospital EDs were frequently appropriate. Transfer appropriateness was conditioned by NH staff training, access to specialists' medical advice, and calling the SAMU before making transfer decisions.

TRIAL REGISTRATION

clinicaltrials.gov, NCT02677272.

Psychiatric disorders among hospitalized patients deceased with COVID-19 in Italy

BACKGROUND

there is concern about the increased risk for SARS-CoV-2 infection, COVID-19 severe outcomes and disparity of care among patients with a psychiatric disorder (PD). Based on the Italian COVID-19 death surveillance, which collects data from all the hospitals throughout the country, we aimed to describe clinical features and care pathway of patients dying with COVID-19 and a preceding diagnosis of a PD.

METHODS

in this cross-sectional study, the characteristics of a representative sample of patients, who have died with COVID-19 in Italian hospitals between February 21st and August 3rd 2020, were drawn from medical charts, described and analysed by multinomial logistic regression according to the recorded psychiatric diagnosis: no PD, severe PD (SPD) (i.e. schizophrenia and other psychotic disorders, bipolar and related disorders), common mental disorder (CMD) (i.e. depression without psychotic features, anxiety disorders).

FINDINGS

the 4020 COVID-19 deaths included in the study took place in 365 hospitals across Italy. Out of the 4020 deceased patients, 84 (2•1%) had a previous SPD, 177 (4.4%) a CMD. The mean age at death was 78.0 (95%CI 77.6-78.3) years among patients without a PD, 71.8 (95%CI 69.3-72.0) among those with an SPD, 79.5 (95%CI 78.0-81.1) in individuals with a CMD. 2253 (61.2%) patients without a PD, 62 (73.8%) with an SPD, and 136 (78.2%) with a CMD were diagnosed with three or more non-psychiatric comorbidities.When we adjusted for clinically relevant variables, including hospital of death, we found that SPD patients died at a younger age than those without a PD (adjusted OR per 1 year increment 0.96; 95% CI 0.94-0.98). Women were significantly more represented among CMD patients compared to patients without previous psychiatric history (aOR 1.56; 95% CI 1.05-2.32). Hospital admission from long-term care facilities (LTCFs) was strongly associated with having an SPD (aOR 9.02; 95% CI 4.99-16.3) or a CMD (aOR 2.09; 95% CI 1.19-3.66). Comorbidity burden, fever, admission to intensive care and time from symptoms' onset to nasopharyngeal swab did not result significantly associated with an SPD or with a CMD in comparison to those without any PD.

INTERPRETATION

even where equal treatment is in place, the vulnerability of patients with a PD may reduce their chance of recovering from COVID-19. The promotion of personalised therapeutic projects aimed at including people with PD in the community rather than in non-psychiatric LTCFs should be prioritised.

Impact of dementia education and training on health and social care staff knowledge, attitudes and confidence: a cross-sectional study

OBJECTIVES

The aim of this study was to establish the impact of dementia education and training on the knowledge, attitudes and confidence of health and social care staff. The study also aimed to identify the most effective features (content and pedagogical) of dementia education and training.

DESIGN

Cross-sectional survey study. Data collection occurred in 2017.

SETTINGS

Health and social care staff in the UK including acute care, mental health community care trusts, primary care and care homes.

PARTICIPANTS

All health and social care staff who had completed dementia education and training meeting the minimal standards as set by Health Education England, within the past 5 years were invited to participate in an online survey. A total of 668 health and social care staff provided informed consent and completed an online survey, and responses from 553 participants were included in this study. The majority of the respondents were of white British ethnicity (94.4%) and identified as women (88.4%).

OUTCOMES

Knowledge, attitude and confidence of health and social care staff.

RESULTS

Hierarchical multiple regression analysis was conducted. Staff characteristics, education and training content variables and pedagogical factors were found to account for 29% of variance in staff confidence (F=4.13, p<0.001), 22% of variance in attitude (knowledge) (F=3.80, p<001), 18% of the variance in staff knowledge (F=2.77, p<0.01) and 14% of variance in staff comfort (attitude) (F=2.11, p<0.01).

CONCLUSION

The results suggest that dementia education and training has limited impact on health and social care staff learning outcomes. While training content variables were important when attempting to improve staff knowledge, more consideration should be given to pedagogical factors when training is aiming to improve staff attitude and confidence.

Severe mental illness and health service utilisation for nonpsychiatric medical disorders: A systematic review and meta-analysis

BACKGROUND

Psychiatric comorbidity is known to impact upon use of nonpsychiatric health services. The aim of this systematic review and meta-analysis was to assess the specific impact of severe mental illness (SMI) on the use of inpatient, emergency, and primary care services for nonpsychiatric medical disorders.

METHODS AND FINDINGS

PubMed, Web of Science, PsychINFO, EMBASE, and The Cochrane Library were searched for relevant studies up to October 2018. An updated search was carried out up to the end of February 2020. Studies were included if they assessed the impact of SMI on nonpsychiatric inpatient, emergency, and primary care service use in adults. Study designs eligible for review included observational cohort and case-control studies and randomised controlled trials. Random-effects meta-analyses of the effect of SMI on inpatient admissions, length of hospital stay, 30-day hospital readmission rates, and emergency department use were performed. This review protocol is registered in PROSPERO (CRD42019119516). Seventy-four studies were eligible for review. All were observational cohort or case-control studies carried out in high-income countries. Sample sizes ranged from 27 to 10,777,210. Study quality was assessed using the Newcastle-Ottawa Scale for observational studies. The majority of studies (n = 45) were deemed to be of good quality. Narrative analysis showed that SMI led to increases in use of inpatient, emergency, and primary care services. Meta-analyses revealed that patients with SMI were more likely to be admitted as nonpsychiatric inpatients (pooled odds ratio [OR] = 1.84, 95% confidence interval [CI] 1.21-2.80, p = 0.005, I2 = 100%), had hospital stays that were increased by 0.59 days (pooled standardised mean difference = 0.59 days, 95% CI 0.36-0.83, p < 0.001, I2 = 100%), were more likely to be readmitted to hospital within 30 days (pooled OR = 1.37, 95% CI 1.28-1.47, p < 0.001, I2 = 83%), and were more likely to attend the emergency department (pooled OR = 1.97, 95% CI 1.41-2.76, p < 0.001, I2 = 99%) compared to patients without SMI. Study limitations include considerable heterogeneity across studies, meaning that results of meta-analyses should be interpreted with caution, and the fact that it was not always possible to determine whether service use outcomes definitively excluded mental health treatment.

CONCLUSIONS

In this study, we found that SMI impacts significantly upon the use of nonpsychiatric health services. Illustrating and quantifying this helps to build a case for and guide the delivery of system-wide integration of mental and physical health services.

Predictors of transport to hospital after emergency ambulance call-out for older people living in residential aged care

OBJECTIVES

People living in residential aged care (RAC) frequently experience ambulance call-out. These episodes may have unintended consequences, yet remain under-investigated. Our aim was to examine clinical and sociodemographic features associated with transfer to hospital for this population.

METHODS

Retrospective cohort study using 6 years of clinical data from Ambulance Victoria (AV). Data analysis included multilevel multivariable logistic regression analysis of factors associated with transport to hospital.

RESULTS

Odds of transfer were greater for people in rural areas, those with a history of depression, cardiovascular disease and osteoporosis, and residents prescribed antipsychotic and antidepressant medication. Ambulance call-out for trauma (commonly low-level fall) was less frequently transferred to hospital than that for a medical complaint.

CONCLUSION

These results will improve prediction of call-outs likely to require transfer. Findings include identification of clinical features to be targeted by community and preventative health programs to reduce risk of acute health deterioration and requirement for emergency hospital transfer.

Paramedics' Perspectives on the Hospital Transfers of Nursing Home Residents-A Qualitative Focus Group Study

Emergency department (ED) visits and hospital admissions are common among nursing home residents (NHRs). Little is known about the perspectives of emergency medical services (EMS) which are responsible for hospital transports. The aim of this study was to explore paramedics’ experiences with transfers from nursing homes (NHs) and their ideas for possible interventions that can reduce transfers. We conducted three focus groups following a semi-structured question guide. The data were analyzed by content analysis using the software MAXQDA. In total, 18 paramedics (mean age: 33 years, male n = 14) participated in the study. Paramedics are faced with complex issues when transporting NHRs to hospital. They mainly reported on structural reasons (e.g., understaffing or lacking availability of physicians), which led to the initiation of an emergency call. Handovers were perceived as poorly organized because required transfer information (e.g., medication lists, advance directives (ADs)) were incomplete or nursing staff was insufficiently prepared. Hospital transfers were considered as (potentially) avoidable in case of urinary catheter complications, exsiccosis/infections and falls. Legal uncertainties among all involved professional groups (nurses, physicians, dispatchers, and paramedics) seemed to be a relevant trigger for hospital transfers. In paramedics’ point of view, emergency standards in NHs, trainings for nursing staff, the improvement of working conditions and legal conditions can reduce potentially avoidable hospital transfers from NHs.

Does older adults' use of social care influence their healthcare utilisation? A systematic review of international evidence

Improving our understanding of the complex relationship between health and social care utilisation is vital as populations age. This systematic review aimed to synthesise evidence on the relationship between older adults' use of social care and their healthcare utilisation. Ten databases were searched for international literature on social care (exposure), healthcare use (outcome) and older adults (population). Searches were carried out in October 2016, and updated May 2018. Studies were eligible if they were published after 2000 in a high income country, examined the relationship between use of social care and healthcare utilisation by older adults (aged ≥60 years), and controlled for an indicator of need. Study quality and bias were rated using the National Institute of Health (NIH) Quality Assessment Tool for Observational Cohort and Cross-Sectional Studies. Study data were extracted and a narrative synthesis was conducted. Data were not suitable for quantitative synthesis. Thirteen studies were identified from 12,065 citations. Overall, the quality and volume of evidence was low. There was limited evidence to suggest that longer lengths of stay in care homes were associated with a lower risk of inpatient admissions. Residents of care homes with onsite nursing had fewer than expected admissions to hospital, compared to people in care homes without nursing, and adjusting for need. Evidence for other healthcare use outcomes was even more limited and heterogeneous, with notable gaps in primary care. We conclude that older adults' use of care homes may moderate inpatient admissions. In particular, the presence of registered nurses in care homes may reduce the need to transfer residents to hospital. However, further evidence is needed to add weight to this conclusion. Future research should build on this evidence and address gaps regarding the influence of community based social care on older adults' healthcare use. A greater focus on primary care outcomes is imperative.

Association between High Proportions of Seriously Mentally Ill Nursing Home Residents and the Quality of Resident Care

OBJECTIVES

To examine the association between the quality of care delivered to nursing home residents with and without a serious mental illness (SMI) and the proportion of nursing home residents with SMI.

DESIGN

Instrumental variable study. Relative distance to the nearest nursing home with a high proportion of SMI residents was used to account for potential selection of patients between high- and low-SMI facilities. Data were obtained from the 2006-2010 Minimum Data Set assessments linked with Medicare claims and nursing home information from the Online Survey, Certification, and Reporting database.

SETTING

Nursing homes with high (defined as at least 10% of a facility's population having an SMI diagnosis) and low proportions of SMI residents.

PARTICIPANTS

A total of 58 571 Medicare nursing residents with an SMI diagnosis (ie, schizophrenia or bipolar disorder) and 558 699 individuals without an SMI diagnosis who were admitted to the same nursing homes.

MEASUREMENTS

Outcomes were nursing home quality measures: (1) use of physical restraints, (2) any hospitalization in the last 3 months, (3) use of an indwelling catheter, (4) use of a feeding tube, and (5) presence of pressure ulcer(s).

RESULTS

For individuals with SMI, admission to a high-SMI facility was associated with a 3.7 percentage point (95% confidence interval [CI] = 1.4-6.0) increase in the probability of feeding tube use relative to individuals admitted to a low-SMI facility. Among individuals without SMI, admission to a high-SMI facility was associated with a 1.7 percentage point increase in the probability of catheter use (95 CI = .03-3.47), a 3.8 percentage point increase in the probability of being hospitalized (95% CI = 2.16-5.44), and a 2.1 percentage point increase in the probability of having a feeding tube (95% CI = .43-3.74).

CONCLUSION

Admission to nursing homes with high concentrations of residents with SMI is associated with worse outcomes for both residents with and without SMI. J Am Geriatr Soc 67:2346-2352, 2019.

Potentially Preventable Medical Hospitalizations and Emergency Department Visits by the Behavioral Health Population

This study investigated geographic variation in potentially preventable medical outcomes that might be used to monitor access to high-quality medical care in the behavioral health population. Analyzing public and non-public data sources from California on adults admitted between 2009 and 2011 to all non-federal licensed medical inpatient (N = 6,603,146) or emergency department units (N = 21,011,958) revealed that 33.6% of nearly 1 million potentially preventable hospitalizations and 9.8% of 1.5 million potentially preventable emergency department visits were made by people with mental or substance use disorder diagnoses. Across California counties or county groups (N = 36), a higher preventable hospitalization rate in the behavioral health population was associated with higher poverty, higher primary care safety net utilization, and fewer mental health providers. Although further validation is required, rates of potentially preventable encounters, particularly hospitalizations, may be useful measures of access to high-quality care in the behavioral health population.

Preventable Hospitalizations Among Nursing Home Residents With Dementia and Behavioral Health Disorders

OBJECTIVE

Nursing home (NH) residents with Alzheimer's disease/related dementias (ADRD) and/or behavioral health disorders (BHD) are at high risk of hospitalizations, many of which are potentially avoidable. Empirical evidence regarding potentially avoidable hospitalizations (PAHs) among these residents is quite sparse and mixed. The objectives of this study were to (1) examine the risk of PAH among residents with ADRD only, BHD only, ADRD and BHD compared to residents with neither and (2) identify associations between individual- and facility-level factors and PAH in these subgroups.

DESIGN

Retrospective, CY2014-2015.

SETTING AND PARTICIPANTS

Long-term residents age 65+ (N = 807,630) residing in 15,234 NHs.

METHODS

We employed the Minimum Data Set, MedPAR, Medicare beneficiary summary, and Nursing Home Compare. Hospitalization risk was the outcome of interest. Individual-level covariates were used to adjust for health conditions. Facility-level covariates and state dummies were included. Multinomial logistic regression models were fit to estimate the risk of PAH and non-potentially avoidable hospitalizations (N-PAH).

RESULTS

Compared to residents without ADRD or BHD, those with ADRD had at least a 10% lower relative risk ratio (RRR) of N-PAH and a significantly lower risk of PAH, at 16% (P < .0001). Residents with BHD only had a statistically higher, but clinically very modest (RRR = 1.03) risk of N-PAH, with no difference in the risk of PAH. Focusing on specific BHD conditions, we found no difference in N-PAH or PAH among residents with depression, lower PAH risk among those with schizophrenia/psychosis (RRR = 0.92), and an increased risk of both N-PAH (RRR = 1.15) and PAH (RRR = 1.09) among residents with bipolar disorders.

CONCLUSIONS AND RELEVANCE

We observed a lower risk of PAH and N-PAH among residents with ADRD, with the risk for residents with BHD varying by condition. Substantial variations in PAH and N-PAH were evident across states. Future research is needed to identify state-level modifiable factors that explain these variations.

Relationship between nursing home quality indicators and potentially preventable hospitalisation

Background

Hospitalisations are very common among nursing home residents and many of these are deemed inappropriate or preventable. Little is known about whether clinical care quality is related to hospitalisation, especially potentially preventable hospitalisations (PPHs). Among the few studies that have been conducted, the findings have been inconsistent. The objective of this study was to examine the relationship between quality indicators and overall and PPHs among Medicaid beneficiaries aged 65 years and older receiving care at nursing homes in Minnesota.

Methods

23 risk-adjusted quality indicators were used to assess nursing home quality of care. Quality indicators and other facility-level variables from the Minnesota Nursing Home Report Card were merged with resident-level variables from the Minimum Data Set. These merged data were linked with Medicaid claims to obtain hospitalisation rates during the 2011–2012 period. The sample consisted of a cohort of 20 518 Medicaid beneficiaries aged 65 years and older who resided in 345 Minnesota nursing homes. The analyses controlled for resident and facility characteristics using the generalised linear mixed model.

Results

The results showed that about 44 % of hospitalisations were PPHs. Available quality indicators were not strongly or consistently associated with the risk of hospitalisation (neither overall nor PPH). Among these 23 quality indicators, five quality indicators (antipsychotics without a diagnosis of psychosis, unexplained weight loss, pressures sores, bladder continence and activities of daily living [ADL] dependence) were related significantly to hospitalisation and only four quality indicators (antipsychotics without a diagnosis of psychosis, unexplained weight loss, ADL dependence and urinary tract infections) were related to PPH.

Conclusion

Although general quality indicators can be informative about overall nursing home performance, only selected quality indicators appear to tap dimensions of clinical quality directly related to hospitalisations.

Avoidable hospitalization among migrants and ethnic minority groups: a systematic review

Background

The numbers of migrants living in Europe are growing rapidly, and has become essential to assess their access to primary health care (PHC). Avoidable Hospitalization (AH) rates can reflect differences across migrant and ethnic minority groups in the performance of PHC. We aimed to conduct a systematic review of all published studies on AH comparing separately migrants with natives or different racial/ethnic groups, in Europe and elsewhere.

Methods

We ran a systematic search for original articles indexed in primary electronic databases on AH among migrants or ethnic minorities. Studies presenting AH rates and/or rate ratios between at least two different ethnic minority groups or between migrants and natives were included.

Results

Of the 35 papers considered in the review, 28 (80%) were conducted in the United States, 4 in New Zealand, 2 in Australia, 1 in Singapore, and none in Europe. Most of the studies (91%) used a cross-sectional design. The exposure variable was defined in almost all articles by ethnicity, race, or a combination of the two; country of birth was only used in one Australian study. Most of the studies found significant differences in overall AH rates, with minorities (mainly Black and Hispanics) showing higher rates than non-Hispanic Whites.

Conclusions

AH has been used, mostly in the US, to compare different racial/ethnic groups, while it has never been used in Europe to assess migrants' access to PHC. Studies comparing AH rates between migrants and natives in European settings can be helpful in filling this lack of evidence.

Factors predisposing nursing home resident to inappropriate transfer to emergency department. The FINE study protocol

Background

Each year, around one out of two nursing home (NH) residents are hospitalized in France, and about half to the emergency department (ED). These transfers are frequently inappropriate. This paper describes the protocol of the FINE study. The first aim of this study is to identify the factors associated with inappropriate transfers to ED.

Methods/design

FINE is a case-control observational study. Sixteen hospitals participate. Inclusion period lasts 7 days per season in each center for a total period of inclusion of one year. All the NH residents admitted in ED during these periods are included. Data are collected in 4 times: before transfer in the NH, at the ED, in hospital wards in case of patient's hospitalization and at the patient's return to NH. The appropriateness of ED transfers (i.e. case versus control NH residents) is determined by a multidisciplinary team of experts.

Results

Our primary objective is to determine the factors predisposing NH residents to inappropriate transfer to ED. Our secondary objectives are to assess the cost of the transfers to ED; study the evolution of NH residents' functional status and the psychotropic and inappropriate drugs prescription between before and after the transfer; calculate the prevalence of potentially avoidable transfers to ED; and identify the factors predisposing NH residents to potentially avoidable transfer to ED.

Discussion

A better understanding of the determinant factors of inappropriate transfers to ED of NH residents may lead to proposals of recommendations of better practice in NH and would allow implementing quality improvement programs in the health organization.

Age and sex differences in hospitalisation of nursing home residents: a systematic review

OBJECTIVES

Nursing home residents (NHRs) are frequently suffering from multimorbidity, functional and cognitive impairment, often leading to hospital admissions. Studies have found that male NHRs are more often hospitalised. The influence of age is inconclusive. We aimed to investigate the epidemiology of hospitalisations in NHRs, particularly focusing on age-specific and sex-specific differences.

DESIGN

A systematic review was performed in PubMed, CINAHL and Scopus. Quality of studies was assessed.

SETTING

Studies conducted in nursing homes were included.

PARTICIPANTS

Nursing home residents.

PRIMARY AND SECONDARY OUTCOMES

Outcome measures were the prevalence, incidence or duration of all-cause hospitalisation by age or sex.

RESULTS

We identified 21 studies, 13 were conducted in the USA. The proportion of residents being hospitalised ranged across studies from 6.8% to 45.7% for various time periods of follow-up. A total of 20 studies assessed the influence of sex and found that hospitalisations are more often in male NHRs. A total of 16 studies conducted multivariate analyses and the OR of hospitalisation for males was between 1.22 and 1.67. Overall, 18 studies assessed the influence of age. Some studies showed an increasing proportion of admissions with increasing age, but several studies also found decreasing hospitalisations above the age of about 80-85 years. 8 of 13 studies conducting multivariate analyses included age as a continuous variable. Only 1 study reported stratified analyses by age and sex. 2 studies investigating primary causes of hospitalisation stratified by sex found some differences in main diagnoses.

DISCUSSION

Male NHRs are more often hospitalised than females, but reasons for that are not well investigated. The influence of age is less clear, but there seems to be no clear linear relationship between age and the proportion being hospitalised. Further studies should investigate age and sex differences in frequencies and reasons for hospitalisation in NHRs.

Better health-related quality of life (mental component summary), having a higher level of education, and being less than 75 years of age are predictors of hospital admission among cognitively intact nursing home residents: a 5-year follow-up study

OBJECTIVE

To study whether health-related quality of life (HRQOL), activities of daily living (ADL), and anxiety and depression symptoms affect the risk of hospital admission and potential interactions with having a cancer diagnosis.

METHODS

This study was a prospective observational study with 5-year follow-up and analyzed the follow-up data on hospital admissions until 2010 using baseline data from 227 cognitively intact nursing home (NH) residents (60 of whom had cancer) in 2004-2005. Data on HRQOL were collected by using the Short Form-36 Health Survey, divided into physical component summary (PCS) and mental component summary (MCS), and symptoms of anxiety and depression were collected by using the Hospital Anxiety and Depression Scale (HADS). ADL were obtained from registered observation and sociodemographic variables, diagnoses, and hospital admissions from the NH records. Personal identification numbers were linked to the record systems of the hospitals, thereby registering all hospital admissions. We analyzed the time elapsing between inclusion and the first hospital admission.

RESULTS

Residents with higher HRQOL (MCS) had significantly more hospital admissions after adjustment for age, sex, marital status, education, and comorbidity. HRQOL (PCS), ADL, depression, and anxiety symptoms were not associated with hospital admissions. Cancer increased the risk after adjustment for all other risk factors but did not increase the effects of MCS, PCS, ADL, or depression or anxiety symptoms. Having a higher level of education and being less than 75 years of age were associated with hospitalization. The residents diagnosed with cancer had the most days in hospital related to diseases of the respiratory system and cancer, and diseases of the circulatory and respiratory systems were more frequent among the residents without a cancer diagnosis.

CONCLUSION

Better self-reported HRQOL (MCS) was associated with hospital admissions, whereas self-reported HRQOL (PCS), ADL, and depression and anxiety symptoms were not. Cancer increased the risk but not the effects of MCS, PCS, ADL, or depression or anxiety symptoms. Having a higher level of education and being less than 75 years of age were also associated with hospitalization.

Elevated Hospitalization Risk of Assisted Living Residents With Dementia in Alberta, Canada

OBJECTIVES

Assisted living (AL) is an increasingly used residential option for older adults with dementia; however, lower staffing rates and service availability raise concerns that such residents may be at increased risk for adverse outcomes. Our objectives were to determine the incidence of hospitalization over 1 year for dementia residents of designated AL (DAL) facilities, compared with long-term care (LTC) facilities, and identify resident- and facility-level predictors of hospitalization among DAL residents.

METHODS

Participants were 609 DAL (mean age 85.7 ± 6.6 years) and 691 LTC (86.4 ± 6.9 years) residents with dementia enrolled in the Alberta Continuing Care Epidemiological Studies. Research nurses completed a standardized comprehensive assessment of residents and interviewed family caregivers at baseline (2006-2008) and 1 year later. Standardized administrator interviews provided facility level data. Hospitalization was determined via linkage with the provincial Inpatient Discharge Abstract Database. Multivariable Cox proportional hazards models were used to identify predictors of hospitalization.

RESULTS

The cumulative annual incidence of hospitalization was 38.6% (34.5%-42.7%) for DAL and 10.3% (8.0%-12.6%) for LTC residents with dementia. A significantly increased risk for hospitalization was observed for DAL residents aged 90+ years, with poor social relationships, less severe cognitive impairment, greater health instability, fatigue, high medication use (11+ medications), and 2+ hospitalizations in the preceding year. Residents from DAL facilities with a smaller number of spaces, no chain affiliation, and from specific health regions showed a higher risk of hospitalization.

CONCLUSIONS

DAL residents with dementia had a hospitalization rate almost 4-fold higher than LTC residents with dementia. Our findings raise questions about the ability of some AL facilities to adequately address the needs of cognitively impaired residents and highlight potential clinical, social, and policy areas for targeted interventions to reduce hospitalization risk.

Emergency ambulance service involvement with residential care homes in the support of older people with dementia: an observational study

BACKGROUND

Older people resident in care homes have a limited life expectancy and approximately two-thirds have limited mental capacity. Despite initiatives to reduce unplanned hospital admissions for this population, little is known about the involvement of emergency services in supporting residents in these settings.

METHODS

This paper reports on a longitudinal study that tracked the involvement of emergency ambulance personnel in the support of older people with dementia, resident in care homes with no on-site nursing providing personal care only. 133 residents with dementia across 6 care homes in the East of England were tracked for a year. The paper examines the frequency and reasons for emergency ambulance call-outs, outcomes and factors associated with emergency ambulance service use.

RESULTS

56% of residents used ambulance services. Less than half (43%) of all call-outs resulted in an unscheduled admission to hospital. In addition to trauma following a following a fall in the home, results suggest that at least a reasonable proportion of ambulance contacts are for ambulatory care sensitive conditions. An emergency ambulance is not likely to be called for older rather than younger residents or for women more than men. Length of residence does not influence use of emergency ambulance services among older people with dementia. Contact with primary care services and admission route into the care home were both significantly associated with emergency ambulance service use. The odds of using emergency ambulance services for residents admitted from a relative's home were 90% lower than the odds of using emergency ambulance services for residents admitted from their own home.

CONCLUSIONS

Emergency service involvement with this vulnerable population merits further examination. Future research on emergency ambulance service use by older people with dementia in care homes, should account for important contextual factors, namely, presence or absence of on-site nursing, GP involvement, and access to residents' family, alongside resident health characteristics.

The effects of cognitive impairment on nursing home residents' emergency department visits and hospitalizations

BACKGROUND

Little is known about the relationship of cognitive impairment (CI) in nursing home (NH) residents and their use of emergency department (ED) and subsequent hospital services.

METHODS

We analyzed 2006 Medicare claims and resident assessment data for 112,412 Medicare beneficiaries aged >65 years residing in US nursing facilities. We estimated the effect of resident characteristics and severity of CI on rates of total ED visits per year, then estimated the odds of hospitalization after ED evaluation.

RESULTS

Mild CI predicted higher rates of ED visits relative to no CI, and ED visit rates decreased as severity of CI increased. In unadjusted models, mild CI and very severe CI predicted higher odds of hospitalization after ED evaluation; however, after adjusting for other factors, severity of CI was not significant.

CONCLUSIONS

Higher rates of ED visits among those with mild CI may represent a unique marker in the presentation of acute illness and warrant further investigation.

Association of dementia with early rehospitalization among Medicare beneficiaries

Preventable hospital readmissions have been recognized as indicators of hospital quality, a source of increased healthcare expenditures, and a burden for patients, families, and caregivers. Despite growth of initiatives targeting risk factors associated with potentially avoidable hospital readmissions, the impact of dementia on the likelihood of rehospitalization is poorly characterized. Therefore, the primary objective of this retrospective cohort study was to investigate whether dementia was an independent predictor of 30-day readmissions. Administrative claims data for all admissions to Rhode Island hospitals in 2009 was utilized to identify hospitalizations of Medicare fee-for-service beneficiaries with a diagnosis of Alzheimer's Disease or other dementias. Demographics, measures of comorbid disease burden, and other potential confounders were extracted from the data and the odds of 30-day readmission to any United States hospital was calculated from conditional logistic regression models. From a sample of 25,839 hospitalizations, there were 3908 index admissions of Medicare beneficiaries who fulfilled the study criteria for a dementia diagnosis. Nearly 20% of admissions (n=5133) were followed by a readmission within thirty days. Hospitalizations of beneficiaries with a dementia diagnosis were more likely to be followed by a readmission within thirty days (adjusted odds ratio (AOR) 1.18; 95% CI, 1.08, 1.29), compared to hospitalizations of those of without dementia. Controlling for discharge site of care did not attenuate the association (AOR 1.21; 95% CI, 1.10, 1.33).

Assessment tools for determining appropriateness of admission to acute care of persons transferred from long-term care facilities: a systematic review

Background

Residents of long-term care facilities have a high risk of acute care admission. Estimates of the frequency of inappropriate transfers vary substantially throughout the studies and various assessment tools have been used. The purpose of this study is to systematically review and describe the internationally existing assessment tools used for determining appropriateness of hospital admissions among long-term care residents.

Method

Systematic review of the literature of two databases (PubMed and CINAHL®). The search covered seven languages and the period between January 2000 and December 2012. All quantitative studies were included if any assessment tool for appropriateness of hospital and/or emergency department admission of long-term care residents was used. Two pairs of independent researchers extracted the data.

Results

Twenty-nine articles were included, covering study periods between 1991 and 2009. The proportion of admissions considered as inappropriate ranged from 2% to 77%. Throughout the studies, 16 different assessment tools were used; all were based on expert opinion to some extent; six also took into account published literature or interpretation of patient data. Variation between tools depended on the concepts studied, format and application, and aspects evaluated. Overall, the assessment tools covered six aspects: specific medical diagnoses (assessed by n = 8 tools), acuteness/severity of symptoms (n = 7), residents’ characteristics prior to admission (n = 6), residents’ or families’ wishes (n = 3), existence of a care plan (n = 1), and availability or requirement of resources (n = 10). Most tools judged appropriateness based on one fulfilled item; five tools judged appropriateness based on a balance of aspects. Five tools covered only one of these aspects and only six considered four or more aspects. Little information was available on the psychometric properties of the tools.

Conclusions

Most assessment tools are not comprehensive and do not take into account residents’ individual aspects, such as characteristics of residents prior to admission and wishes of residents or families. The generalizability of the existing tools is unknown. Further research is needed to develop a tool that is evidence-based, comprehensive and generalizable to different regions or countries in order to assess the appropriateness of hospital admissions among long-term care residents.

Risk of death or hospital admission among community-dwelling older adults living with dementia in Australia

Background

Older people living with dementia prefer to stay at home to receive support. But they are at high risk of death and/or hospital admissions. This study primarily aimed to determine risk factors for time to death or hospital admission (combined) in a sample of community-dwelling older people living with dementia in Australia. As a secondary study purpose, risk factors for time to death were also examined.

Methods

This study used the data of a previous project which had been implemented during September 2007 and February 2009. The original project had recruited 354 eligible clients (aged 70 and over, and living with dementia) for Extended Aged Care At home Dementia program services during September 2007 and 2008. Client information and carer stress had been collected from their case managers through a baseline survey and three-monthly follow-up surveys (up to four in total). The principal data collection tools included Global Deterioration Scale, Modified Barthel Index, Instrumental-Dependency OARS, Adapted Cohen-Mansfield Agitation Inventory, as well as measures of clients’ socio-demographic characteristics, service use and diseases diagnoses. The sample of our study included 284 clients with at least one follow-up survey. The outcome variable was death or hospital admission, and death during six, nine and 16-month study periods. Stepwise backwards multivariate Cox proportional hazards analysis was employed, and Kaplan-Meier survival analysis using censored data was displayed.

Results

Having previous hospital admissions was a consistent risk factor for time to death or hospital admission (six-month: HR = 3.12; nine-month: HR = 2.80; 16-month: HR = 2.93) and for time to death (six-month: HR = 2.27; 16-month: HR = 2.12) over time. Previously worse cognitive status was a consistent risk factor over time (six- and nine-month: HR = 0.58; 16-month: HR = 0.65), but no previous use of community care was only a short-term risk factor (six-month: HR = 0.42) for time to death or hospital admission.

Conclusions

Previous hospital admissions and previously worse cognitive status are target intervention areas for reducing dementia clients’ risk of time to death or hospital admission, and/or death. Having previous use of community care as a short-term protective factor for dementia clients’ time to death or hospital admission is noteworthy.

The association between long-term care setting and potentially preventable hospitalizations among older dual eligibles

OBJECTIVE

To compare the probability of experiencing a potentially preventable hospitalization (PPH) between older dual eligible Medicaid home and community-based service (HCBS) users and nursing home residents.

DATA SOURCES

Three years of Medicaid and Medicare claims data (2003-2005) from seven states, linked to area characteristics from the Area Resource File.

STUDY DESIGN

A primary diagnosis of an ambulatory care sensitive condition on the inpatient hospital claim was used to identify PPHs. We used inverse probability of treatment weighting to mitigate the potential selection of HCBS versus nursing home use.

PRINCIPAL FINDINGS

The most frequent conditions accounting for PPHs were the same among the HCBS users and nursing home residents and included congestive heart failure, pneumonia, chronic obstructive pulmonary disease, urinary tract infection, and dehydration. Compared to nursing home residents, elderly HCBS users had an increased probability of experiencing both a PPH and a non-PPH.

CONCLUSIONS

HCBS users' increased probability for potentially and non-PPHs suggests a need for more proactive integration of medical and long-term care.

Depression and ambulatory care sensitive hospitalizations among Medicare beneficiaries with chronic physical conditions

OBJECTIVE

We examined the association between depression and hospitalizations for Ambulatory Care Sensitive Conditions (H-ACSC) among Medicare beneficiaries with chronic physical conditions.

METHODS

We used a retrospective longitudinal design using multiple years (2002-2009) of linked fee-for-service Medicare claims and survey data from Medicare Current Beneficiary Survey to create six longitudinal panels. We followed individuals in each panel for a period of 3-years; first year served as the baseline and subsequent 2-years served as the follow-up. We measured depression, chronic physical conditions and other characteristics at baseline and examined H-ACSC at follow-up. We identified chronic physical conditions from survey data and H-ACSC and depression from fee-for-service Medicare claims. We analyzed unadjusted and adjusted relationships between depression and the risk of H-ACSC with chi-square tests and logistic regressions.

RESULTS

Among all Medicare beneficiaries, 9.3% had diagnosed depression. Medicare beneficiaries with depression had higher rates of any H-ACSC as compared to those without depression (13.6% vs. 7.7%). Multivariable regression indicated that, compared to those without depression, Medicare beneficiaries with depression were more likely to experience any H-ACSC.

CONCLUSIONS

Depression was associated with greater risk of H-ACSC, suggesting that health care quality measures may need to include depression as a risk-adjustment variable.

Hospitalizations of nursing home residents in the last year of life: nursing home characteristics and variation in potentially avoidable hospitalizations

OBJECTIVES

To examine the incidence of, variations in, and costs of potentially avoidable hospitalizations (PAHs) of nursing home (NH) residents at the end of life and to identify the association between NH characteristics and a facility-level quality measure (QM) for PAH.

DESIGN

Retrospective.

SETTING

Hospitalizations originating from NHs.

PARTICIPANTS

Long-term care NH residents who died in 2007.

MEASUREMENTS

A risk-adjusted QM was constructed for PAH. A Poisson regression model was used to predict the count of PAH given residents' risk factors. For each facility, the QM was defined as the difference between the observed facility-specific rate (per 1,000 person-years) of PAH (O) and the expected risk-adjusted rate (E). A logistic regression model with state fixed-effects was then fit to examine the association between facility characteristics and the likelihood of having higher-than-expected rates of PAH (O-E > 0). QM values greater than 0 indicate worse-than-average quality.

RESULTS

Almost 50% of hospital admissions for NH residents in their last year of life were for potentially avoidable conditions, costing Medicare $1 billion. Five conditions were responsible for more than 80% of PAHs. PAH QM across facilities showed significant variation (mean 12.0 ± 142.3 per 1,000 person-years, range -399.48 to 398.09 per 1,000 person-years). Chain and hospital-based facilities were more likely to exhibit better performance (O-E < 0). Facilities with higher nursing staffing were more likely to have better performance, as were facilities with higher skilled staff ratio, those with nurse practitioners or physician assistants, and those with on-site X-ray services.

CONCLUSION

Variations in facility-level PAHs suggest that a potential for reducing hospital admissions for these conditions may exist. Presence of modifiable facility characteristics associated with PAH performance could help us formulate interventions and policies for reducing PAHs at the end of life.

Integrative psychotherapeutic nursing home program to reduce multiple psychiatric symptoms of cognitively impaired patients and caregiver burden: randomized controlled trial

OBJECTIVE

To test the effectiveness of an integrative psychotherapeutic nursing home program (integrative reactivation and rehabilitation [IRR]) to reduce multiple neuropsychiatry symptoms (MNPS) of cognitively impaired patients and caregiver burden (CB).

DESIGN

Randomized controlled trial.

SETTING

Psychiatric-skilled nursing home (IRR) and usual care (UC), consisting of different types of nursing home care at home or in an institution.

PARTICIPANTS

N = 168 (81 IRR and 87 UC). Patients had to meet classification of the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition for dementia, amnestic disorders, or other cognitive disorders. Further inclusion criteria: Neuropsychiatric Inventory (NPI) ≥3; Mini-Mental State Examination ≥18 and ≤27; and Barthel Index (BI) ≥5 and ≤19.

INTERVENTION

IRR consisted of a person-oriented integrative psychotherapeutic nursing home program to reduce MNPS of the patient and CB. UC consisted of different types of nursing home care at home or in an institution, mostly emotion oriented.

MEASUREMENTS

Primary outcome variable was MNPS (number and sum-severity of NPI). Furthermore, burden and competence of caregiver were also measured.

ASSESSMENTS

T1 (inclusion), T2 (end of treatment), T3 (after 6 months of follow-up). Cohen's d (Cd) was calculated for mean differences (intention to treat). For confounding, repeated measurement modeling (random regression modeling [RRM]) was applied.

RESULTS

In the short term from the perspective of the caregiver, IRR showed up to 34% surplus effects on MNPS of the patients; NPI symptoms: 1.31 lower (Cd, -0.53); and NPI sum- severity: 11.16 lower (Cd, -0.53). In follow-up, the effects were sustained. However, from the perspective of the nursing team, these effects were insignificant, although the trend was in the same direction and correlated significantly with the caregiver results over time (at T3: r = 0.48). In addition, IRR showed surplus effects (up to 36%) on burden and competence of caregiver: NPI emotional distress: 3.78 (Cd, -0.44); CB: 17.69 (Cd, -0.63) lower; and Competence: 6.26 (Cd, 0.61) higher. In follow-up, the effects increased up to 50%. RRM demonstrated that the effects were stable.

CONCLUSION

From the perspective of the caregiver, IRR was significantly more effective than UC to reduce MNPS in cognitively impaired patients and CB. In follow-up, the effect on CB even increased. However, from the perspective of the nursing team, the effects on MNPS were statistically insignificant. Nevertheless, the trend was in the same direction and correlated significantly with the caregiver results over time. Further research is needed, preferably using a blinded randomized controlled trial.

Racial disparities in rehospitalization among Medicare patients in skilled nursing facilities

OBJECTIVES

We examined racial disparities in rehospitalization rates among a cohort of non-Hispanic White and Black Medicare beneficiaries admitted to skilled nursing facilities for postacute care.

METHODS

We analyzed the 2008 national Nursing Home Minimum Data Set, augmented with other databases. We used multivariable logistic regression to estimate overall racial disparities in rehospitalization rates within 30 days and 90 days of nursing facility admission and the extent to which the disparities were explained by patient, facility, market, and state factors. Stratified analyses identified persistent disparities within patient subgroups, facility types, and states.

RESULTS

The 30-day rehospitalization rates were 14.3% for White patients (n = 865 993) and 18.6% for Black patients (n = 94 651); the 90-day rehospitalization rates were 22.1% and 29.5%, respectively. Both patient and admitting facility characteristics accounted for a considerable portion of overall racial disparities, but disparities persisted after multivariable adjustments overall and in patient subgroups.

CONCLUSIONS

We found persistent racial disparities in rehospitalization among the nation's skilled nursing facility patients receiving postacute care. Targeted efforts are needed to remove these disparities.

Depressive symptoms in men aged 50 years and older and their relationship to genetic androgen receptor polymorphism and sex hormone levels in three different samples

OBJECTIVE

Depression in aging men has been related to low sex hormone concentrations; the putatively modulating effects of the genetically determined androgen receptor (AR) cytosine-adenosine-guanine (CAG) repeat polymorphism are often not taken into account. The aim of this study was to determine how sex hormone levels and the AR polymorphism relate to depressive symptoms in aging men.

METHODS

This cross-sectional study of men aged 50 years and older included 120 consecutive patients of the Department of Psychosomatics and Psychotherapy, 76 consecutive patients of the Andrologic Clinic, and 100 participants from the community sample (CS); all participants completed the Patient Health Questionnaire. Morning blood samples were analyzed for total and free testosterone, estradiol, and the AR CAG polymorphism. Patients on hormone substitution or other medication known to influence testosterone levels were excluded.

RESULTS

The two clinical samples had significantly longer AR CAG repeats and higher depression levels compared with the CS. When controlling for possible confounders, depression scores were positively correlated with CAGn (r = 0.20, df: 107, p ≤ 0.038) in psychosomatic patients and with CAGn (r = 0.27, df: 55, p ≤ 0.043) and estradiol (r = 0.31, df: 55, p ≤ 0.019) in andrologic patients, whereas the CS showed no significant correlations between depression scores, CAGn, and sex hormones. CAGn did not correlate significantly with testosterone in the three samples. Regression analysis confirmed association of CAGn with depression.

CONCLUSIONS

Conclusions from these data must be considered to be preliminary and need to be replicated. However, our results point to associations between the genetic AR polymorphism and vulnerability to depressive symptomatology.