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Research into informal caregivers’ burden does not distinguish between different stages of impairment. This study explored the determinants of burden from an in-depth perspective in order to identify which determinants apply to which phases of impairment. Methods:This was a cross-sectional study including frail older persons aged 65 and above. Instruments used were the interRAI Home Care, the Zarit-12 interview and an ad hoc economic questionnaire. A combination of variables from the Stress Process Model and Role Theory and a sub-group analysis enabled refined multivariate logistic analyses. Results:The study population consisted of 4175 older persons (average age: 81.4 ± 6.8, 67.8% female) and their informal caregivers. About 57% of them perceived burden. Depressive symptoms, behavioral problems, IADL impairment, previous admissions to nursing homes and risk of falls yielded significant odds ratios in relation to informal caregivers’ burden for the whole sample. These determinants were taken from the Stress Process Model. When the population was stratified according to impairment, some factors were only significant for the population with severe impairment (behavioral problems OR:2.50; previous admissions to nursing homes OR:2.02) and not for the population with mild or moderate impairment. The informal caregiver being an adult child, which is a determinant from Role Theory, and cohabitation showed significant associations with burden in all strata. Conclusion:Determinants of informal caregivers’ burden varied according to stages of impairment. The results of this study can help professional caregivers gain a greater insight into which informal caregivers are most susceptible to perceive burden. Abbreviations:NIHDI: National Institute for Health and Disability Insurance; ZBI12: Zarit Burden Interview - 12 items; InterRAI HC: interRAI Home Care instrument; ADL: Activities of Daily Living; ADLH: interRAI Activities of Daily Living Hierarchy scale; IADL: Instrumental Activities of Daily Living; IADLP: InterRAI Instrumental Activities of Daily Living Performance scale; CPS2: InterRAI Cognitive Performance scale 2; DRS: InterRAI Depression Rating scale [ABSTRACT FROM AUTHOR]

Background: In order to optimize interventions and services in the community, it is important to identify the profile of persons who are able to stay at home and of those who are being admitted into residential care. Understanding their needs and their use of resources is essential. The main objective of the study is to identify persons who are likely to enter residential care based upon their needs and resource utilization, so that care providers can plan interventions effectively and optimize services and resources to meet the persons' needs., Methods: This is a longitudinal quasi-experimental study. The data consists of primary data from the community setting collected every six months during the period of 2010-2016. Interventions had the goal of keeping older people longer at home. Participants were at least 65 years old and were living in the community. The interRAI Resource Utilization Group system (RUG-III) was used to calculate the case-mix indexes (CMI) of all participants. Comparisons were made between the case-mix of those who were still living at home and those who were admitted into residential care at follow-up., Results: A total of 10,289 older persons participated in the study (81.2 ± 7.1 yrs., 69.1% female). From this population, 853 participants (8.3%) were admitted into residential care. The CMI of the persons receiving night care at home were the highest (1.6 at baseline and 1.7 at the entry point of residential care), followed by persons receiving occupational therapy (1.5 at baseline and 1.6 at the entry point of residential care) and persons enrolled in case management interventions with rehabilitation (1.4 at baseline and 1.6 at the entry point of residential care). The CMIs at follow-up were significantly higher than at baseline and the linear regression model showed that admission to residential care was a significant factor in the model., Conclusions: The study showed that the RUG-III system offers possibilities for identifying persons at risk of institutionalization. Interventions designed to avoid early nursing home admission can make use of the RUG-III system to optimize care planning and the allocation of services and resources. Based on the RUG-III case-mix, resources can be allocated to keep older persons at home longer, bearing in mind the complexity of care and the availability of services in the community.

The methodological challenges to effectiveness evaluation of complex interventions has been widely discussed. Bottom-up case management for frail older person was implemented in Belgium, and indeed, it was evaluated as a complex intervention. This paper presents the methodological approach we developed to respond to four main methodological challenges regarding the evaluation of case management: (1) the standardization of the interventions, (2) stratification of the frail older population that was used to test various modalities of case management with different risks groups, (3) the building of a control group, and (4) the use of multiple outcomes in evaluating case management. To address these challenges, we developed a mixed-methods approach that (1) used multiple embedded case studies to classify case management types according to their characteristics and implementation conditions; and (2) compared subgroups of beneficiaries with specific needs (defined by Principal Component Analysis prior to cluster analysis) and a control group receiving 'usual care', to evaluate the effectiveness of case management. The beneficiaries' subgroups were matched using propensity scores and compared using generalized pairwise comparison and the hurdle model with the control group. Our results suggest that the impact of case management on patient health and the services used varies according to specific needs and categories of case management. However, these equivocal results question our methodological approach. We suggest to reconsider the evaluation approach by moving away from a viewing case management as an intervention. Rather, it should be considered as a process of interconnected actions taking place within a complex system., Competing Interests: The authors have declared that no competing interests exist.

Background/objective: although informal caregivers (ICG) find caring for a relative mainly satisfying, it can be difficult at times and it can lead to a state of subjective burden characterised by -among others- fatigue and stress. The objective of this study is to analyse the relationship between perceived social support and subjective burden in providing informal care to frail older people., Methods: a descriptive cross-sectional study was conducted using data from a large nationwide longitudinal effectiveness study. Pearson correlations were calculated between the variables for support and burden. Logistic regression models were applied to determine the association between being unsatisfied with support and burden, taking into account multiple confounding variables., Results: of the 13,229 frail older people included in this study, 85.9% (N = 11,363) had at least one informal caregiver. Almost 60% of the primary informal caregivers manifested subjective burden, measured with the 12-item Zarit-Burden-Interview (ZBI-12). The percentage of informal caregivers that were unsatisfied with support from family and friends was on average 11.5%. Logistic regression analysis showed that being unsatisfied with support is associated with burden (OR1.85; 95%CI1.53-2.23). These results were consistent for the three groups of impairment level of the frail older persons analysed., Conclusions: the association between perceived social support and subjective caregiver burden was explored in the context of caring for frail older people. ICGs who were unsatisfied with support were more likely to experience burden. Our findings underline the importance of perceived social support in relation to caregiver burden reduction. Therefore efforts to improve perceived social support are worth evaluating., (© The Author(s) 2019. Published by Oxford University Press on behalf of the British Geriatrics Society. All rights reserved. For permissions, please email: journals.permissions@oup.com.)

Background: Approximately one third of older people over 65 years fall each year. Home modifications may decrease occurrence of falls., Purpose: This study aims to determine the risk factors of falls for frail older persons and to evaluate the impact of home modifications by an occupational therapist on the occurrence of falls., Method: We conducted a longitudinal study using a quasiexperimental design to examine occurrence of falls. All participants 65 years of age and older and were assessed at baseline and 6 months after the intervention. Bivariate analysis and logistic regression models were used to study the risk factors of falls and the effect of home modifications on the incidence of falls., Findings: The main predictors of falls were vision problems, distress of informal caregiver, and insufficient informal support. Home modifications provided by an occupational therapist showed a significant reduction of falls., Implications: Informal caregivers and their health status had an impact on the fall risk of frail older persons. Home modifications by an occupational therapist reduced the fall risk of frail older persons at 6-months follow-up.

Objectives: To examine the effects of home care interventions for frail older people in delaying permanent institutionalization during 6 months of follow-up., Design: Longitudinal quasi-experimental research study, part of a larger study called Protocol 3., Setting: Community care in Belgium., Participants: Frail older adults who received interventions (n = 4,607) and a comparison group of older adults who did not (n = 3,633). Organizations delivering the interventions included participants provided they were aged 65 and older, frail, and at risk of institutionalization. A comparison group was established consisting of frail older adults not receiving any interventions., Intervention: Home care interventions were identified as single component (occupational therapy (OT), psychological support, night care, day care) or multicomponent. The latter included case management (CM) in combination with OT and psychological support or physiotherapy, with rehabilitation services, or with OT alone., Measurements: The interRAI Home Care (HC) was completed at baseline and every 6 months. Data from a national database were used to establish a comparison group. Relative risks of institutionalization and death were calculated using Poisson regression for each type of intervention., Results: A subgroup analysis revealed that 1,999 older people had mild impairment, and 2,608 had moderate to severe impairment. Interventions providing only OT and interventions providing CM with rehabilitation services were effective in both subpopulations., Conclusion: This research broadens the understanding of the effects of different types of community care interventions on the delay of institutionalization of frail older people. This information can help policy-makers to plan interventions to avoid early institutionalization., (© 2016, Copyright the Authors Journal compilation © 2016, The American Geriatrics Society.)

Background: Case management is a type of intervention expected to improve the quality of care and therefore the quality of life of frail, community-dwelling older people while delaying institutionalisation in nursing homes. However, the heterogeneity, multidimensionality and complexity of these interventions make their evaluation by the means of classical approaches inadequate. Our objective was twofold: (i) to propose a tool allowing for the identification of the key components that explain the success of case management for this population and (ii) to propose a typology based on the results of this tool., Methods: The process started with a multiple embedded case study design in order to identify the key components of case management. Based on the results of this first step, data were collected among 22 case management interventions, in order to evaluate their expected effectiveness. Finally, multiple correspondence analyses was conducted to propose a typology of case management. The overall approach was informed by Wagner's Chronic Care Model and the theory of complexity., Results: The study identified a total of 23 interacting key components. Based on the clustering of response patterns of the 22 case management projects included in our study, three types of case management programmes were evidenced, situated on a continuum from a more "socially-oriented" type towards a more "clinically-oriented" type of case management. The type of feedback provided to the general practitioner about both the global geriatric assessment and the result of the intervention turned out to be the most discriminant component between the types., Conclusion: The study design allowed to produce a tool that can be used to distinguish between different types of case management interventions and further evaluate their effect on frail older people in terms of the delaying institutionalisation, functional and cognitive status, quality of life and societal costs.

Background: Various elderly case management projects have been implemented in Belgium. This type of long-term health care intervention involves contextual factors and human interactions. These underlying complex mechanisms can be usefully informed with field experts' knowledge, which are hard to make explicit. However, computer simulation has been suggested as one possible method of overcoming the difficulty of articulating such elicited qualitative views., Methods: A simulation model of case management was designed using an agent-based methodology, based on the initial qualitative research material. Variables and rules of interaction were formulated into a simple conceptual framework. This model has been implemented and was used as a support for a structured discussion with experts in case management., Results: The rigorous formulation provided by the agent-based methodology clarified the descriptions of the interventions and the problems encountered regarding: the diverse network topologies of health care actors in the project; the adaptation time required by the intervention; the communication between the health care actors; the institutional context; the organization of the care; and the role of the case manager and his or hers personal ability to interpret the informal demands of the frail older person., Conclusion: The simulation model should be seen primarily as a tool for thinking and learning. A number of insights were gained as part of a valuable cognitive process. Computer simulation supporting field experts' elicitation can lead to better-informed decisions in the organization of complex health care interventions., (© 2013 John Wiley & Sons, Ltd.)