Quality of life (QOL) among community dwelling older people in Taiwan measured by the CASP-19, an index to capture QOL in old age

Time, age, gender and cultural measurement invariance of the CASP-12, a measure of psychological quality of life in adulthood

PURPOSE

Whereas Quality of Life in older populations has long been conceptualized in regards to health or illness, the Control, Autonomy, Self-Realization and Pleasure scale (CASP-12) focuses on the positive facets of aging. Although the CASP is a widely used scale, its measurement invariance has seldom been examined. The present study aims to ascertain the measurement invariance of the CASP-12 over a period of 10 years and between age, culture and gender.

METHODS

Secondary data analyses were conducted on the longitudinal data collected in four waves between 2006 and 2016-2017 of the Survey of Health, Ageing and Retirement in Europe study (SHARE). The factorial validity of the CASP-12 was examined and its measurement invariance was tested with a sample of 3684 men and 4955 women aged 30-99 years, coming from 10 different European countries.

RESULTS

Results showed a strong theoretical and empirical dimensionality of the CASP-12, a well as invariance of time (10 years), age and culture. It was also found that the scale is gender invariant at the strict level. These results were replicated with two more waves of SHARE, measured six years apart.

CONCLUSION

This study replicates the CASP-12 dimensional structure, factorial structure and factor loadings. The scale has demonstrated to be a reliable and valid measurement of the positive aspects of quality of life to be used across time, age, gender and culture. The Autonomy dimension of the scale warrants further investigation.

Derivation, and establishment of the validity and reliability, of the CASP-11-SG quality of life scale among community-dwelling older adults

PURPOSE

The number and proportion of older adults, aged ≥ 60 years, in Singapore is rapidly increasing. A valid and reliable quality of life (QoL) measure will enable assessment of their situation and help evaluate social and clinical interventions, potentially improving care. This study aims to evaluate the validity and reliability of the control, autonomy, self-realization, and pleasure (CASP)-12v.3 QoL scale and establish a scale suitable for use among older adults in Singapore.

METHODS

Data from 3526 community-dwelling older adults from a national survey was used. Measurement properties of the CASP-12v.3 scale were evaluated. Confirmatory factor analysis (CFA; testing single- and two-factor models with residual covariances for negatively worded items and a bifactor model) was performed in half of the sample and exploratory factor analysis (EFA) was performed in the other half. The results led to revised CFA models and the CASP-11-SG scale. The CASP-11-SG scale's measurement properties, convergent, and known-groups validity, and measurement equivalence/invariance (ME/I) across English and Chinese languages were evaluated.

RESULTS

Item 3 'I feel free to plan for the future' of the CASP-12v.3 scale had low correlation with other items of the control/autonomy subscale, low item-total correlation and high item-scale correlation. While CFA and EFA supported the two-factor model, removing item 3 improved model fit. The resulting CASP-11-SG scale (Cronbach's alpha: 0.81) demonstrated convergent and known-groups validity and partial ME/I across English and Chinese languages.

CONCLUSION

The CASP-11-SG scale, with satisfactory psychometric properties, can be used for assessing QoL among older adults in Singapore.

Studies on the Digital Inclusion Among Older Adults and the Quality of Life—A Nanjing Example in China

Digital inclusion can bridge the digital divide and reduce the social exclusion of older adults, yet it is understudied in China. This research examined factors influencing the digital inclusion of older adults in China and the relationship between digital inclusion and quality of life. Data collected from 312 older people (M = 69.6 years old) in Nanjing were included in a multinomial logit model to tackle these questions. Their attitudes toward technology were the most significant factor predicting their digital inclusion. Other factors included party affiliation, living situation, personal average monthly income, occupation, and capacity for instrumental activities of daily living (IADLs). This study shows digital inclusion has a direct impact on quality of life. It also serves as an intermediate variable that affects older people's attitudes toward technology and their IADL capacities. Most importantly, digital inclusion promotes social integration of older adults and improves the quality of their lives. Hence, it should not be ignored. Older people's attitudes toward technology are one of the keys to promoting their digital inclusion.

Impact of a patient-centered medical home demonstration on quality of life and patient activation for older adults with complex needs in Singapore

BACKGROUND

The first Patient-Centered Medical Home (PCMH) demonstration in Singapore was launched in November 2016, which aimed to deliver integrated and patient-centered care for patients with bio-psycho-social needs. Implementation was guided by principles of comprehensiveness, coordinated care, shared decision-making, accessible services, and quality and safety. We aimed to investigate the impact of implementing the PCMH in primary care on quality of life (QoL) and patient activation.

METHODS

The study design was a prospective single-arm pre-post study. We applied the 5-level EuroQol 5-dimension (EQ-5D-5L) and Visual Analog Scale (EQ VAS) instruments to assess health-related QoL. The CASP-19 tool was utilised to examine the degree that needs satisfaction was fulfilled in the domains of Control, Autonomy, Self-realisation, and Pleasure. The 13-item Patient Activation Measure (PAM-13) was used to evaluate knowledge, skills and confidence in management of conditions and ability to self-care. Multivariable linear regression models with random intercepts were applied to examine the impact of the PCMH intervention on outcome measures at 3 months and 6 months post-enrolment, compared to baseline.

RESULTS

We analysed 165 study participants enrolled into the PCMH from November 2017 to April 2020, with mean age 77 years (SD: 9.9). Within-group pre-post (6 months) EQ-5D-5L Index (β= -0.01, p-value = 0.35) and EQ VAS score (β=-0.03, p-value = 0.99) had no change. Compared to baseline, there were improvements in CASP-19 total score at 3 months (β = 1.34, p-value = 0.05) and 6 months post-enrolment (β = 1.15, p-value = 0.08) that were marginally out of statistical significance. There was also a significant impact of the PCMH on the CASP-19 Pleasure domain (β = 0.62, p = 0.03) at 6 months post-enrolment, compared to baseline. We found improved patient activation from a 15.2 % reduction in the proportion of participants in lower PAM levels, and a 23.4 and 16.7 % rise in proportion for higher PAM levels 3 and 4, respectively, from 3 months to 6 months post-enrolment.

CONCLUSIONS

Preliminary demonstration of the PCMH model shows evidence of improved needs satisfaction and patient activation, with potential to have a greater impact after a longer intervention duration.

Frailty and Autonomy among the Oldest Old: Evidence from the Multicenter Prospective AgeCoDe-AgeQualiDe Study

INTRODUCTION

There is a lack of studies examining the link between perceived autonomy and frailty among the oldest old. Therefore, our objective was to fill this gap.

METHODS

Data were used from the multicenter prospective cohort study "Needs, health service use, costs and health-related quality of life in a large sample of oldest-old primary care patients (85+)" (AgeQualiDe; follow-up [FU] wave 9; n = 510 observations in the analytical sample). The average age was 90.3 years (SD: 2.7 years). The Canadian Study of Health and Aging (CSHA) Clinical Frailty Scale (CFS) was used to assess frailty. Socioeconomic and health-related covariates were included in our regression model. The autonomy scale developed by Schwarzer was used to assess perceived autonomy in old age.

RESULTS

Adjusting for various confounders, multiple linear regressions showed that lower perceived autonomy was associated with increased levels of frailty (total sample: β = -0.13, p < 0.001; women: β = -0.14, p < 0.001; and men: β = -0.12, p < 0.001). Furthermore, lower perceived autonomy was associated with more depressive symptoms, higher cognitive impairment, and being institutionalized (except for men) in the total sample and in both sexes, but it was not significantly associated with age, sex, marital status, educational level, and social support.

CONCLUSION

Findings indicate that frailty is associated with lower autonomy among the oldest old. More generally, while health-related factors were consistently associated with autonomy, sociodemographic factors (except for being institutionalized) were not associated with autonomy among the oldest old. We should be aware of the strong association between autonomy and physical as well as mental health in very old age.

Theory and Design of the Community for successful ageing (ComSA) program in Singapore: connecting BioPsychoSocial health and quality of life experiences of older adults

BACKGROUND

Despite the emphasis on holistic health promotion in community programs for older people, few studies explicitly consider how BioPsychoSocial (BPS) health elements are interconnected and function to improve Quality of Life (QoL). The Community for Successful Ageing (ComSA) program in Singapore focuses on Community Development (CD) initiatives for older people, accounting for BPS theory in its design and content. Biological (B) health is conceived as physiological and cognitive functioning and related biological self-care; Psychological (P) health as feelings of life satisfaction, and Social health (S) as perceived social support and civic engagement. Furthermore, three overlapping sub-constructs are theorized to connect these elements. Namely Bio-Psychological (BP) health in terms of self-perceptions of ageing; the Psycho-Social (PS) aspects of interpersonal communication; and the Socio-Communal (SC) health in terms of civic engagement. BPS health is conceived as distinct from QoL, defined as composed of control, autonomy, self-realisation and pleasure (measured by CASP-19) of the older person. We examined 1) interconnections of BPS constructs and related sub-constructs and 2) their associations with QoL to inform a practical, applied program theory.

METHODS

A baseline survey (n = 321) of program participants (Mean = 70 years, SD = 8.73). All continuous variables were binarized as 'high' if the scores were above the median. Multivariate logistic regression was used to assess 1) the adjusted effect of each BPS construct on CASP-19, and 2) the odds of scoring high on one BPS construct with the odds of scoring high on a related sub-construct (e.g. B and BP health).

RESULTS

The strongest relationship with QoL was markedly with BP self-perceptions of ageing (OR = 4.07, 95%CI = 2.21-7.49), followed by P life satisfaction (OR = 3.66, 95%CI = 2.04-6.57), PS interpersonal communication (OR = 2.42, 95%CI = 1.23-4.77), SC civic engagement (OR = 1.94, 95%CI = 1.05-3.57), and S social support (OR = 1.89, 95%CI = 1.06-3.38). Core B, P and S health were closely associated with their sub-constructs.

CONCLUSION

ComSA CD is tightly coupled to its proposed program theory. It offers classes to improve B self-care and BP self-perceptions of ageing, group-based guided autobiography to improve P life-satisfaction and PS interpersonal communication, and community initiatives that encourage seniors to solve community issues. This holistic approach is likely to enhance ageing experiences and QoL.

Quality of life is substantially worse for community-dwelling older people living with frailty: systematic review and meta-analysis

PURPOSE

Frailty is an important predictor of adverse health events in older people, and improving quality of life (QOL) is increasingly recognised as a focus for services in this population. This systematic review synthesised evidence of the relationship between frailty and QOL in community-dwelling older people, with an emphasis on how this relationship varied across QOL domains.

METHODS

We conducted a systematic review with meta-analysis. We searched five databases for reports of QOL in older people with frailty and included studies based on pre-defined criteria. We conducted meta-analyses comparing "frail" and "not frail" groups for each QOL scale where data were available. We compared pooled results to distribution-based and known-group differences to enhance interpretation. We summarised reported cross-sectional and longitudinal analyses.

RESULTS

Twenty-two studies (24,419 participants) were included. There were medium or larger standardised mean differences for 24 of 31 QOL scales between frail and not frail groups, with worse QOL for frail groups. These scales encompassed constructs of health-related quality of life as well as psychological and subjective well-being. There were similar findings from mean difference meta-analyses and within-study analyses.

CONCLUSIONS

The association between frailty and lower QOL across a range of constructs is clear and often substantial. Future research should establish whether causal mechanisms link the constructs, which aspects of QOL are most important to older people with frailty, and investigate their tractability. Services focused on measuring and improving QOL for older people with frailty should be introduced.

Development and Validation of the Nursing Home Care-related Quality of Life Scale

OBJECTIVES

We developed an instrument to assess nursing home residents' quality of life (QOL), with a focus on QOL-related factors modifiable through nursing home care, within the South Korean context; then, we tested its validity and reliability.

DESIGN

The scale was constructed through a literature review, qualitative interviews, expert panel review, and a focus group interview; then, it was validated through survey research.

SETTING AND PARTICIPANTS

Residents (N = 667) from 42 nursing homes in South Korea participated in scale validation.

METHODS

Ninety-nine items across 5 dimensions were initially drafted through a literature review and qualitative interview data. The expert panel review and a focus group interview yielded a scale with 31 items across 3 dimensions. Next, using survey data from nursing home residents, we examined the construct and concurrent validity and reliability (using Kuder-Richardson 20) of the 31-item QOL scale.

RESULTS

Through a series of factor analyses, the 31 items were reduced to 17 items across 2 dimensions: Environment and Services (13 items) and Social Interaction (4 items). This 17-item scale was further examined for model fitness and reliability. The scale had acceptable to good fit (root mean square error of approximation = 0.07 and 0.07; comparative fit index = 0.83 and 0.98 for Environment and Services and Social Interaction, respectively), and good concurrent validity and internal consistency (Kuder-Richardson 20 = 0.72).

CONCLUSIONS AND IMPLICATIONS

This 17-item scale is a valid and reliable tool to assess nursing home residents' QOL in South Korea, with a focus on factors modifiable through nursing home care. Through more research to test its usefulness, validity, and reliability, the scale can be used as an index of nursing home care quality and contribute to the development of strategies to improve nursing home residents' QOL.

Association of Neighborhood Social Capital With Quality of Life Among Older People in Singapore

Objective: To examine how neighborhood-based cognitive and structural social capital are associated with individual quality of life among a sample of community-dwelling older adults in Singapore. Method: Using survey data from 981 older adults (aged 55 years and above) in nine residential neighborhoods, multilevel models simultaneously estimated the effects of independent variables at the individual and neighborhood levels on quality of life (CASP-12). Results: Social cohesion (β = 1.39, p < .01) and associational membership (β = 19.16, p < .01) were associated with higher quality of life in models adjusted for neighborhood facilities and individual sociodemographics, social networks, functional limitations, global cognitive status, and medical conditions. Discussion: The results suggest that place-based or neighborhood social capital may be important for older person's well-being. It identifies the contribution of structural (associational membership) and cognitive (social cohesion) social capital to the well-being of community-dwelling older adults in Singapore.

Adaptation and Validation of Active Aging Index Among Older Vietnamese Adults

Objective: The objective of this study was to adapt and validate the Vietnamese version of Active Aging Index (AAI). Method: We conducted an expert panel, focus groups, test-retest and examination of internal consistency, and construct and concurrent validity among 804 older Vietnamese adults. Results: Scale content validity index (CVI) was 0.98. Test-retest coefficients ranged from 0.70 to 1.00. The Cronbach's alphas of well-being, voluntary, affordability, and politics were 0.94, 0.70, 0.65, and 0.16, respectively. Voluntary and well-being had good construct validity. Regarding politics, only one of four items had good test-retest reliability (Kappa 0.84), while other three had low variance in both test-retest and field study. In exploratory factor analysis, items assessing affordability loaded on three components. AAI was positively associated with perceived health, life satisfaction, and quality of life; it was negatively associated with falls, loneliness, and frailty. Discussion: In adapting AAI, researchers should consider cultural sensitivity. Key modifications, findings, explanations, and suggestions are presented here.

Reliability and Validity of the Lithuanian Version of CASP-19: A Quality of Life Questionnaire for the Elderly

Introduction: Ageing is associated with several physical, psychological, and behavioral changes. These changes are closely related with general health problems and quality of life in old age. The CASP-19 multidimensional instrument was specially designed to measure quality of life in the elderly. The different language versions of this scale have been used in more than 20 countries. However, Lithuanian translation was not available. The objective of our study was to test psychometric properties of the Lithuanian version of the CASP-19 questionnaire. Materials and methods: A cross-sectional study was performed with ambulatory men and women aged 60 and older, living in a community in Vilnius, Lithuania. Exclusion criteria were current acute illness, malignant tumor, and Mini-Mental State Examination (MMSE) score < 25 points. Psychometric properties of CASP-19 were tested using reliability and validity methods. Results: The study sample consisted of 132 participants, 28 (21.8%) of them were men and 103 (78.2%) women. Analysis of psychometric properties of the Lithuanian version of CASP-19 showed high internal consistency (Cronbach's alpha 0.85), good agreement between test-retest measures with an ICC of 0.82 (95% CI 0.79⁻0.85) and good convergent and divergent construct validity. Conclusions: The psychometric properties indicated that the Lithuanian version of CASP-19 was reliable and valid. As such, it might be used to evaluate quality of life in elderly people.

[New semantic-cultural validation and psychometric study of the CASP-19 scale in adult and elderly Brazilians]

The study aimed to investigate psychometric indicators of validity in the new version of CASP-19 for Brazilians 55 years and older and to study relations between scores on the scale and sex, age, schooling, and conjugal status. A total of 368 participants enrolled in educational programs for the elderly answered the CASP-19 scale (control, autonomy, self-realization, and pleasure), translated from English by five specialists and tested in 19 women (α = 0.730). The data were submitted to exploratory factors analyses (EFA) and confirmatory factor analyses (CFA) using the structural equations method for latent variables and for internal consistency and correlation with scales of similar content. The scores were compared according to sex, age, schooling, and conjugal status. CFA produced a model with 19 items and 2 factors (self-realization/pleasure and control/autonomy), with good fit indices (GFI = 0.8; AGFI = 0.7606; CFI = 0.7241; NNFI = 0.6876; SRMR = 0.0902; RMSEA = 0.0928; 90%CI: 0.0827-0.1031). Cronbach's α was 0.837 for factor 1 and 0.670 for factor 2, and 0.874 on the total scale for individuals with 9 or more years of schooling, 0.834 for 5 to 8 years, and 0.772 for 1 to 4 years. High and significant correlations were observed with the scores in scales on satisfaction and subjective happiness. Men scored higher than women on self-realization/pleasure; older individuals and those with the most schooling scored lower on control/autonomy; individuals with a spouse or partner scored higher on control/autonomy. The new version of CASP-19 was effective in assessing self-rated quality of life in individuals 55 years or older in residents of the Southeast, South, and Northeast of Brazil.

Assessment of sarcopenia in virally suppressed HIV-infected Asians receiving treatment

OBJECTIVES

In a clinic-based, treated HIV-infected cohort, we identified individuals with sarcopenia and compared with age, sex and ethnically matched controls; and investigated associated risk factors and health outcomes.

DESIGN

Sarcopenia (age-related muscle loss) causes significant morbidity to the elderly, leading to frequent hospitalizations, disability and death. Few have characterized sarcopenia in the HIV-infected who experience accelerated aging.

METHODS

Sarcopenia was defined as low muscle mass with weak grip strength and/or slow gait speed using lower 20th percentiles of controls. Multivariate logistic and linear regression analyses were used to explore risk factors and health-related outcomes associated with sarcopenia among HIV-infected individuals.

RESULTS

We recruited 315 HIV-infected individuals aged at least 25 years with at least 1-year history of undetectable viral load on treatment (HIV RNA <50 copies/ml). Percentage of sarcopenia in 315 HIV-infected was 8%. Subsequently, 153 of the 315 were paired with age, sex and ethnically matched HIV-uninfected. The percentage of sarcopenia in the HIV-infected (n = 153) compared with uninfected (n = 153) were 10 vs. 6% (P = 0.193) respectively, whereas of those at least 50 years of age among them were 17% vs. 4% (P = 0.049), respectively. Associated risk factors among the HIV-infected include education level, employment status, BMI, baseline CD4 cell count, duration on NRTIs and GGT levels. Identified negative outcomes include mortality risk scores [5.42; 95% CI 1.46-9.37; P = 0.007) and functional disability (3.95; 95% CI 1.57-9.97; P = 0.004).

CONCLUSION

Sarcopenia is more prevalent in HIV-infected at least 50 years old compared with matched controls. Our findings highlight associations between sarcopenia with loss of independence and greater healthcare burden among treated HIV-infected individuals necessitating early recognition and intervention.

Psychometric properties of the CASP-12 in a Spanish older community dwelling sample

OBJECTIVE

Current studies have shown that older people's quality of life (QoL) is more associated to individual's sense of happiness and subjective life satisfaction than to objective problems. CASP scale conceptualizes QoL based on a psycho-sociological perspective. Originally, CASP consisted of 19 items (four factors: Control, Autonomy, Self-realization and Pleasure). Later, it was proposed a shorter version (12 items and three factors). The aim of this study was to assess the structure of the CASP-12 SHARE version using confirmatory factor analysis.

METHOD

The CASP structures traditionally proposed were checked and tested in a sample of 1108 people aged 60 years and over.

RESULTS

The three factor model (1) pleasure, (2) self-realization and (3) autonomy and control showed a good overall fit (CFI = .932; TLI = .912; RMSEA = .067). An adequate internal consistency was also obtained.

CONCLUSION

This is the first study that explored the psychometric properties and validated the well-fitting three factor structure for the CASP-12 in a large population sample of older people from Spain. The results support a multidimensional model for the CASP-12 composed by three factors. It has potential to be used as a multidimensional tool to assess QoL in older people.

Validation of the CASP-19 Quality of Life Measure in Three Languages in Malaysia

The CASP-19 is an age-specific measure of quality of life. It comprises four domains: control, autonomy, self-realisation and pleasure, and is widely used in large cohort studies in temperate climates. Our objective was to translate the CASP-19 into Bahasa Malaysia and validate it for use in older Malaysians in their three commonly used languages of English, Bahasa Malaysia and Traditional Chinese. CASP-19 showed good internal consistency and test-retest reliability with acceptable construct validity compared with the 12-item short-form health survey. Factor analysis found the best fit for the Taiwanese five-domain model. The validity of CASP-19 may be limited by cultural differences.

Major health impact of accelerated aging in young HIV-infected individuals on antiretroviral therapy

BACKGROUND

Aging among HIV-infected individuals on antiretroviral therapy (ART) is a significant clinical challenge; however, studies assessing multidimensional aspects of aging are lacking. We characterized 10 geriatric conditions encompassing multiple functional domains, its health impact and associated risk factors in HIV-infected and age-matched uninfected controls.

METHODS

HIV-infected individuals were recruited from the outpatient clinic in University Malaya Medical Centre, Malaysia and controls from the community. All participants were aged at least 25 years of age with no acute illness, and HIV-infected individuals were on stable ART. Geriatric conditions were assessed and the burden scored as a composite of geriatric conditions present in an individual (total score = 10). Multivariate regression analysis was performed to determine the risk factors and health impact associated with the burden of geriatric conditions.

RESULTS

We analyzed data from 336 HIV-infected individuals (total HIV+), of whom 172 were matched for age, sex, and ethnicity with 172 HIV-uninfected controls (matched subset). In the total HIV-positive cohort, median (interquartile range) age was 44 (38-51) years and CD4 T-cell count was 562 (398-737) cells/μl. The burden of geriatric conditions was significantly higher in the HIV-infected group compared with controls (P < 0.001). With an increasing geriatric condition burden, quality-of-life scores were 2.2-times poorer, healthcare use five times greater, and mortality risk scores four times higher in the HIV-infected group compared with matched controls. Both sociobehavioural and HIV-related clinical factors were independently associated with an increasing burden of geriatric condition in HIV.

CONCLUSIONS

A high burden of geriatric conditions with significant impact on health outcomes, including mortality risk scores are observed among HIV-infected individuals on ART in a resource-limited setting.

Association between Physical Frailty and Quality of Life in a Representative Sample of Community-Dwelling Swiss Older People

OBJECTIVE

Though the association between physical frailty and health is well established, little is known about its association with other domains of quality of life (QoL). This study investigated the association between physical frailty and multiple domains of QoL in community-dwelling older people.

DESIGN

Cross-sectional study.

SETTING AND PARTICIPANTS

Data of the 2011 annual assessment of 927 older people (age 73-77 years) from the Lc65+ cohort study were used.

MEASUREMENTS

Physical frailty was assessed by Fried's five criteria: 'shrinking'; 'weakness'; 'poor endurance, exhaustion'; 'slowness'; and 'low activity'. QoL was assessed using 28 items yielding a QoL score and seven domain-specific QoL subscores (Feeling of safety; Health and mobility; Autonomy; Close entourage; Material resources; Esteem and recognition; and Social and cultural life). Low QoL (QoL score or QoL subscores in the lowest quintile) was used as dependent variable in logistic regression analyses adjusted for age and sex (model 1), and additionally for socioeconomic (model 2) and health (model 3) covariates.

RESULTS

Physical frailty was associated with a low QoL score, as well as decreased QoL subscores in all seven specific domains, even after adjusting for socio-economic covariates. However, when performing additional adjustment for health covariates, only the domain Health and mobility remained significantly associated with physical frailty. Among each specific Fried's criteria, 'slowness' had the strongest association with a low QoL score.

CONCLUSION

Physical frailty is associated with all QoL domains, but these associations are largely explained by poor health characteristics. Longitudinal studies are needed to better understand temporal relationships between physical frailty, health and QoL.

Association between frailty and quality of life among community-dwelling older people: a systematic review and meta-analysis

BACKGROUND

With growing numbers of older people worldwide, improving and maintaining quality of life during the extended years of life are a major focus for healthcare providers and policymakers. Some studies have suggested frailty may be associated with worse quality of life.

OBJECTIVES

To review the associations between frailty and quality of life among community-dwelling older people.

METHODS

A systematic literature search was performed using five databases for cross-sectional and longitudinal studies examining associations between frailty and quality of life among community-dwelling older people published in 2000 or later. Reference lists of relevant studies were also manually searched. Authors were requested for data for a meta-analysis if necessary. Meta-analysis was attempted for studies using the same frailty criteria and quality-of-life instrument. Methodological quality, heterogeneity and publication bias were assessed.

RESULTS

The systematic review identified 5145 studies, among which 11 cross-sectional studies and two longitudinal studies were included in this review. Meta-analysis including four cross-sectional studies using the Fried Phenotype and 36-Item Short Form Health Survey showed that those classified as frail and prefrail had significantly lower mental and physical quality-of-life scores than those classified as non-frail. High heterogeneity and possible publication bias were noted.

CONCLUSIONS

This systematic review and meta-analysis has demonstrated the evidence of a consistent inverse association between frailty/prefrailty and quality of life among community-dwelling older people. Interventions targeted at reducing frailty may have the additional benefit of improving corresponding quality of life. More longitudinal analysis is required to determine this effect.

A systematic review of instruments for measuring outcomes in economic evaluation within aged care

BACKGROUND

This paper describes the methods and results of a systematic review to identify instruments used to measure quality of life outcomes in older people. The primary focus of the review was to identify instruments suitable for application with older people within economic evaluations conducted in the aged care sector.

METHODS

Online databases searched were PubMed, Medline, Scopus, and Web of Science, PsycInfo, CINAHL, Embase and Informit. Studies that met the following criteria were included: 1) study population exclusively above 65 years of age 2) measured health status, health related quality of life or quality of life outcomes more broadly through use of an instrument developed for this purpose, 3) used a generic preference based instrument or an older person specific preference based or non-preference based instrument or both, and 4) published in journals in the English language after 2000.

RESULTS

The most commonly applied generic preference based instrument in both the community and residential aged care context was the EuroQol - 5 Dimensions (EQ-5D), followed by the Adult Social Care Outcomes Toolkit (ASCOT) and the Health Utilities Index (HUI2/3). The most widely applied older person specific instrument was the ICEpop CAPability measure for Older people (ICECAP-O) in both community and residential aged care.

CONCLUSION

In the absence of an ideal instrument for incorporating into economic evaluations in the aged care sector, this review recommends the use of a generic preference based measure of health related quality of life such as the EQ-5D to obtain quality adjusted life years, in combination with an instrument that has a broader quality of life focus like the ASCOT, which was designed specifically for evaluating interventions in social care or the ICECAP-O, a capability measure for older people.

Association of quality of life with laboratory measurements and lifestyle factors in community dwelling older people in Taiwan

OBJECTIVES

Little is known about the influence of routine laboratory measurements and lifestyle factors on generic quality of life (QOL) at older ages. We aimed to study the relationship between generic QOL and laboratory measurements and lifestyle factors in community dwelling older Chinese people.

METHODS

We conducted a cross-sectional analysis. Six hundred and ninety nine elders were randomly selected from the examinees of the annual health examination in Taipei City, Taiwan. Blood, urine and stool of the participants were examined and lifestyle data were collected. Participants completed the CASP-19 (control, autonomy, self-realization, pleasure) questionnaire, a 19-item QOL scale. The relationship between QOL and laboratory results and lifestyle factors was explored, using multiple linear regression and profile analysis.

RESULTS

The mean age of the participants was 75.5 years (SD = 6.5), and 49.5% were female. Male gender standardized β coefficients (β = 0.122) and exercise habit (β = 0.170) were associated with a better QOL, whereas advanced age (β = -0.242), blurred vision (β = -0.143), depression (β = -0.125), central obesity (β = -0.093), anemia (β = -0.095), rheumatoid arthritis (β = -0.073), Parkinsonism (β = -0.079), malignancy (β = -0.086) and motorcycle riding (β = -0.086) were associated with a lower QOL. Profile analysis revealed that young-old males, social drinkers, regular exercisers and car drivers had the best QOL (all p < 0.001).

CONCLUSION

Of the many laboratory measurements, only anemia was associated with the lower QOL. By contrast, several lifestyle factors, such as social drinking, exercise habit and car driving, were associated with better QOL, whereas abdominal obesity and motorcycle riding were associated with lower QOL.

Psychometric properties and confirmatory factor analysis of the CASP-19, a measure of quality of life in early old age: the HAPIEE study

OBJECTIVES

The aim was to assess the reliability and validity of the quality of life (QoL) instrument CASP-19, and three shorter versions of CASP-12 in large population sample of older adults from the HAPIEE (Health, Alcohol, and Psychosocial factors In Eastern Europe) study.

METHODS

From the Czech Republic, Russia, and Poland, 13,210 HAPIEE participants aged 50 or older completed the retirement questionnaire including CASP-19 at baseline. Three shorter 12-item versions were also derived from original 19-item instrument. Psychometric validation used confirmatory factor analysis, Cronbach's alpha, Pearson's correlation, and construct validity.

RESULTS

The second-order four-factor model of CASP-19 did not provide a good fit to the data. Two-factor CASP-12v.3 including residual covariances for negative items to account for the method effect of negative items had the best fit to the data in all countries (CFI = 0.98, TLI = 0.97, RMSEA = 0.05, and WRMR = 1.65 in the Czech Republic; 0.96, 0.94, 0.07, and 2.70 in Poland; and 0.93, 0.90, 0.08, and 3.04 in Russia). Goodness-of-fit indices for the two-factor structure were substantially better than second-order models.

CONCLUSIONS

This large population-based study is the first validation study of CASP scale in Central and Eastern Europe (CEE), which includes a general population sample in Russia, Poland, and the Czech Republic. The results of this study have demonstrated that the CASP-12v.3 is a valid and reliable tool for assessing QoL among adults aged 50 years or older. This version of CASP is recommended for use in future studies investigating QoL in the CEE populations.

A decade of research using the CASP scale: key findings and future directions

Since the publication of A Measure of Quality of Life in Early Old Age: The Theory, Development and Properties of a Needs Satisfaction Model (CASP-19) just over 10 years ago, the scale has gone on to be used in a wide variety of studies in over 20 countries across the world and the original paper has become the most highly cited paper for Aging and Mental Health. Therefore it was felt that it was a good time to look back and reflect on the developments in the use of the scale as well as to look forward to what new research is being done and could be done with the measure. To this end we are extremely grateful for the editors for allowing us to bring together a collection of papers that represent cutting edge research using the CASP scale. These papers cover a wide variety of issues, from working conditions to religiosity, from a range of countries, covering Western and Eastern Europe as well as Africa. Each makes an important individual contribution to our understanding of the factors that influence quality of life in later life as well as pointing to the limitations of the measure and future work that can be done in this area.

Quality of life amongst older Brazilians: a cross-cultural validation of the CASP-19 into Brazilian-Portuguese

INTRODUCTION

As population ageing becomes a global phenomenon the need to understand the quality of life of older people around the world has become increasingly salient. The CASP-19 is a well established measure of quality of later life. The scale is composed of 19 items which map onto the four domains of control (C), Autonomy (A), Self-Realisation (S) and Pleasure (P). It has already been translated to 12 languages and has been used in a number of national and international studies. However use of the scale outside of Europe has been very limited. The objective of this study was to translate and evaluate the use of the CASP-19 amongst older Brazilians.

METHODS

The CASP-19 was translated from English to Portuguese, back-translated and submitted to an analysis of equivalence by a committee of judges. The scale was then administered to a sample of community dwelling older people in Recife, Brazil (n = 87), and tested for psychometric properties. The Control and Pleasure domains exhibited good internal consistency. By removing one item from each of the Autonomy and Self Realisation domains their internal consistency was improved.

RESULTS

The mean age of the sample was 75.6±0.7 years, subjects were mainly female (52.9%), white (52.9%), who lived without a partner (54%), and had a monthly income varying from USD 340.00 to USD 850.00. Translation and cross-cultural adaptation permitted good understanding and applicability of final version. Psychometric analyses revealed that the removal of two items improved the internal consistency of the Autonomy and Pleasure domains. Confirmatory factor analyses suggest that a 16 item, four factor, model best fits the data.

CONCLUSION

In this small exploratory study the CASP-19 Brazil demonstrated good psychometric properties. It was easy to use for both participants and researchers. Hopefully future studies in Brazil will employ the scale so that more direct cross national comparisons can be made with older people in Europe and the US.