Factors Associated With Social Isolation in Older Adults: A Systematic Review and Meta-Analysis

Impact of Severe Dyspnea on Mortality and Disability: A 9-Year Cohort Study of Older Adults in Japan

OBJECTIVES

We investigated the association of severe dyspnea and frailty with all-cause mortality and disability in Japanese community-dwelling older adults.

DESIGN

A 9-year follow-up cohort study.

SETTING AND PARTICIPANTS

We enrolled 3499 community-dwelling adults aged ≥65 years without disabilities or residence in care facilities who completed a baseline survey in 2013.

METHODS

Dyspnea was assessed via a questionnaire on severe dyspnea during daily activities, and frailty status was determined using the Kihon Checklist. Disability was defined as new long-term care insurance certification. Cox proportional hazard models were used to calculate hazard ratios for mortality and disability. Fine-Gray regression models were used to calculate subdistribution hazard ratios for disability while accounting for mortality as a competing risk and adjusting for confounders. Both analyses were stratified by frailty status.

RESULTS

Severe dyspnea was present in 240 participants (6.9%). Overall, the incidence rate of mortality was 6.37 and 2.55 per 100 person-years, and that of disability was 9.96 and 5.06 in the dyspnea and no-dyspnea groups, respectively. Severe dyspnea was associated with a hazard ratio of 1.67 (95% CI, 1.35-2.07) for mortality and 1.38 (95% CI, 1.14-1.67) for incident disability in the frailty group. After accounting for death as a competing risk using the Fine-Gray regression model, the subdistribution hazard ratio for new disability associated with severe dyspnea was 1.38 (95% CI, 1.12-1.70) in the frailty group.

CONCLUSIONS AND IMPLICATIONS

Severe dyspnea was associated with an increased risk of both mortality and incident disability, particularly among participants in the frailty group. These findings highlight the heightened vulnerability of frail older adults to dyspnea-associated adverse outcomes.

Association of polysocial risk score, cardiovascular health status, and the risk of premature mortality: Findings from the UK Biobank

BACKGROUND

Evidence of the cumulative effects of social risk factors on premature mortality is quite limited. We aimed to examine the association between cumulative social risk factors and premature mortality by constructing a polysocial risk score, and to explore the influence of cardiovascular health on this association.

METHODS

A polysocial risk score was constructed by summing 11 social determinants of health. A cardiovascular health (CVH) score was calculated following the algorithm of "Life's Essential 8". Premature mortality was defined as death at an age younger than 75. Cox proportional hazards model was conducted.

RESULTS

A total of 314,039 participants in the UK Biobank were included (median age 56.0 years, 53.1% women). During a median of 12.7 years of follow-up, 13,888 premature deaths were reported. Compared with participants who had a low polysocial risk score (≤3), participants with a high polysocial risk score (≥7) were more than twice as likely to die prematurely in the follow-up period (HR 2.18, 95% CI 2.06-2.30). Compared with participants with ideal CVH and low polysocial risk score, those with poor CVH and high polysocial risk score had the highest risk of premature mortality (HR 5.25, 95% CI 4.48-6.14). A significant interaction was found between CVH status and polysocial risk score on premature mortality risk (P for interaction <0.001).

CONCLUSIONS

Polysocial risk score was associated with an increased risk of premature mortality, the association was exacerbated by poor CVH. Our findings indicate that limiting social inequities and encouraging people to achieve an ideal CVH are essential to reducing the burden of premature mortality.

Prevalence of loneliness and social isolation amongst individuals with severe mental disorders: a systematic review and meta-analysis

AIMS

A systematic review and meta-analysis was conducted to investigate the prevalence and antecedents/outcomes of loneliness and social isolation among individuals with severe mental disorders (SMD), such as schizophrenia, schizoaffective disorder, bipolar disorder or major depressive disorder.

METHODS

Five well-known electronic databases (PubMed, PsycINFO, CINAHL, Web of Science and Scopus) were searched (plus a hand search). Observational studies that report the prevalence and, if available, antecedents and consequences of loneliness/isolation among individuals with SMD were included. Key characteristics were extracted, and a meta-analysis was performed. Our systematic review was preregistered on PROSPERO (ID: CRD42024559043). The PRISMA guidelines were followed. The Joanna Briggs Institute (JBI) standardized critical appraisal tool developed for prevalence studies was applied to assess the quality of the included studies.

RESULTS

The initial search yielded 4506 records, and after duplicate removal and screening, a total of 10 studies were finally included. The studies included used data from Europe, Asia, North America, and Oceania. Two studies employed a longitudinal design, while all other studies had a cross-sectional design. Most of the studies included between 100 and 500 individuals with SMD. All studies involved both male and female participants, with women typically comprising about 40% of the sample. The average age of participants often ranged from approximately 30 to 40 years. The estimated prevalence of loneliness was 59.1% (95% CI: 39.6% to 78.6%, I2 = 99.3, P < .001) among individuals with any diagnosis of SMD. Furthermore, the estimated prevalence of objective social isolation was 63.0% (95% CI: 58.6% to 67.4%) among individuals with schizophrenia or schizophrenia spectrum disorder. The quality of the studies was moderate to good. Subjective well-being and depressive symptoms in particular were found to contribute to loneliness in the included studies.

CONCLUSIONS

The present systematic review with meta-analysis identified high levels of loneliness and objective social isolation among those with SMD. These findings stress the importance of monitoring and addressing social needs in this vulnerable group, which may have a positive effect on the life quality of individuals with SMD. Future research in neglected regions (e.g. South America and Africa) is recommended. Different diagnoses within severe mental disorders should be distinguished in future studies. Furthermore, additional longitudinal studies are required to explore the antecedents and consequences of loneliness and social isolation among individuals with SMD.

Investigating links between posttraumatic stress symptoms, posttrauma appraisals, and social support in older adults

Research has established the importance of posttrauma appraisals to the development of posttraumatic stress symptoms (PTSS) across a variety of trauma types, populations, and developmental periods. Considering this large body of evidence, there is a notable lack of research on posttrauma appraisals in older adulthood. As rates of elder abuse and maltreatment grow, rates of PTSS are also expected to rise, signaling an urgent need to pinpoint the factors associated with the development and maintenance of PTSS during this unique developmental period. This study extends previous research by exploring whether alienation appraisals were positively associated with PTSS when controlling for other factors known to predict PTSS, including fear appraisals, social support, and cumulative maltreatment. In a convenience sample of community-dwelling older adults (N = 99), multiple linear regression revealed that alienation appraisals were significantly associated with PTSS, β = .34, p = .002, after controlling for cumulative maltreatment (before and after 60 years of age), financial exploitation, fear appraisals, and social support, R2 = .51. Our findings suggest that consistent with research from earlier developmental periods, alienation appraisals are significantly associated with PTSS in older adults even when accounting for other factors, such as social support, that are known to be particularly important in old age. Implications, limitations, and future directions are discussed.

Combined effects of social isolation and loneliness on disability incidence in older adults

OBJECTIVES

Relationships among social isolation, loneliness, and disability onset remain unclear. We investigated the distinct patterns of disability development among Japanese older adults who experience social isolation and loneliness.

DESIGN

This study applied a prospective observational approach.

PARTICIPANTS

Data from 4,716 community-dwelling independent older adults were analyzed.

MEASUREMENTS

The Japanese version of the University of California, Los Angeles Loneliness Scale Version 3 and the Social Isolation Scale were used to measure loneliness and social isolation, respectively. The long-term care insurer conducted monthly follow-ups with participants over two years to determine their care needs. Disability onset was defined as the point at which participants were certified by a care manager as requiring long-term care.

RESULTS

During the follow-up period, 265 participants (5.6 %) required long-term care insurance certification due to disability onset. The incidence of disability in the lonely and not lonely groups was 8.0 % and 4.5 %, respectively. In the socially isolated and not socially isolated groups, it was 7.1 % and 4.4 %, respectively. The Cox proportional hazards regression model revealed a significantly higher risk of disability incidence in the lonely and socially isolated groups. The high-risk group experiencing both loneliness and social isolation exhibited significantly higher hazard ratios than the low-risk group without these symptoms.

CONCLUSIONS

The results indicated that older adults experiencing both social isolation and loneliness were at high-risk for future disability incidence. This finding provides insight into the complex interplay between social factors and disability, which can contribute to the development of effective interventions to promote healthy aging and prevent disability.

Exploring the Association Between Physical Activity, Regulatory Emotional Self-Efficacy, Perceived Self-Burden, and Social Isolation Among Older Adults in China

Background: As people age, their physical functions decline, and changes in social roles and life experiences put older adults at a higher risk of social isolation. Methods: In this study, we employed both snowball and purposive sampling techniques to collect valid data from 237 seniors aged 60 to 75 residing in Hunan Province. Using structural equation modeling (SEM) with the partial least squares (PLS) method, we examined the relationship between physical activity and social isolation among this elderly population. Result: Findings from this study indicate a positive association between physical activity and regulatory emotional self-efficacy, while revealing a negative association with the perception of being a burden to others. Moreover, a higher regulatory emotional self-efficacy is linked to reduced social isolation, whereas an increased sense of self-perceived burden is associated with greater social isolation. This study also uncovers that the link between physical activity and reduced social isolation is influenced by both regulatory emotional self-efficacy and the perception of self-burden. Conclusion: It is imperative for a collaborative effort involving government entities, societal groups, family units, and individuals to meticulously address and cater to the diverse requirements of senior citizens.

"Loneliness is a sad disease": oldest old adults' empirical definition of loneliness and social isolation from a mixed-method study in Northern Italy

BACKGROUND

Loneliness and social isolation can occur at any stage of life, but some predictors may be more common among older adults. Due to growing population ageing, loneliness and social isolation are relevant social issues. Many studies apply the main definitions of loneliness and social isolation offered by the literature without considering how individual representations, socio-cultural context and the culture of care may influence their perception. This study wishes to fill in these literature gaps by analysing empirical definitions of loneliness and social isolation arising from a mixed-gender randomized sample of Italian oldest old people.

METHODS

Between January and March 2019, 132 older people, most aged 80+, living in a northern Italian town, were asked to answer a questionnaire and a semi-structured interview. According to a mixed-method analysis the definitions of loneliness and social isolation were analysed by respondents' gender, living arrangement (e.g., living alone or with partners or other people), and years of education to find possible associations to the meanings attributed to the two concepts.

RESULTS

The sample was gender-balanced and mid-low educated; more than one fourth of respondents lived alone. The results underline how the empirical definitions of loneliness and social isolation are closer to each other than the academic ones. The two concepts are often perceived by participants as distinct, but they are strongly interconnected so that they can be used interchangeably by older Italian people. The two main themes identified by the analysis are loneliness as "death" and social isolation as "guilt". In the respondents' opinion, the main loneliness driver is the loss of loved, close persons, while social isolation is driven by disability. Age, educational level, and living arrangements did not influence the meanings attributed to social isolation. On the contrary, living arrangement (P = 0.002) and educational level (p = 0.023) seem to influence the empirical definitions of loneliness.

CONCLUSION

The knowledge of the meanings that oldest old give to the two concepts may inspire advanced intervention aimed at buffering the psychological and social consequences of loneliness and social isolation in the older population.

Association of ambient temperature with social isolation among the community-dwelling Chinese older adults: A cross-sectional study in Hong Kong

Background

The adverse health impacts of ambient temperature have been well-documented, encompassing not only the mortality and morbidity burden but also mood and mental health disorders. However, the relationship between temperature and social isolation remains unexplored. The objective of the current study was to investigate the potential associations between ambient temperature and social isolation among the aging population.

Methods

We took advantage of a cross-sectional survey conducted between January 2017 and November 2018 from a community service program special for older adults aged ≥60 who lived in a central community of Hong Kong. The personal social isolation was assessed by the validated Lubben Social Network Scale-6 (LSNS-6), with a score ranging from 0 to 30 and score of less than 12 indicating social isolation. The environmental exposures, including ambient temperature, sunshine hours, rainfalls, and air pollution, were obtained from the nearby monitoring stations. The association of ambient temperature with LSNS-6 score or social isolation was examined by the generalized linear models while adjusting the potential confounding from other environmental exposures and personal sociodemographic factors.

Results

Among the 1616 participants, the distribution of LSNS-6 score was approximately normal and the mean score was a bit higher on cool days than on hot days (13.0 vs. 12.2). Compared with cool temperatures (14.4-19.5oC), the independent effect estimates of hot ambient temperatures (24.5-28.7oC) was associated with a 2.38 (95%CI: 1.63-3.13) decrease in LSNS-6 score. Meanwhile, we observed statistically significant associations of sunshine exposure, gender, health status, marital status, living alone, religion, and housing type with LSNS-6 score or social isolation.

Conclusions

Our study revealed a clear association between ambient cool temperatures and reduced social isolation, as well as association between hot temperatures and social isolation among older Chinese adults residing in the urban community of Hong Kong.

Outcomes of the Together for Life Program in Community-Dwelling Older Adults Living Alone: A Pilot Study

PURPOSE

The current study developed and tested selected effects of the Together for Life (TFL) program for community-dwelling older adults using an embedded mixed methods design.

METHOD

Nine community volunteers participated in the training program, and 14 people aged ≥65 years, living alone, enrolled in the study. Home visits were conducted by home health nurses every 2 weeks, supplemented by weekly home visits and phone counseling provided by volunteers, for a duration of 20 weeks. This mixed methods study used quantitative and qualitative approaches. Quantitative data were gathered through a questionnaire survey to assess the intervention's effects on health-related quality of life (HRQOL), loneliness, and depression. The qualitative component focused on participants' evaluation of the program.

RESULTS

Significant changes were noted in HRQOL scores with an effect size of 0.6 (p = 0.01). Results indicated the positive impact of the TFL program on HRQOL among older adults as their health status was continuously monitored by volunteers who provided care and home health nurses who assisted with health management during the coronavirus disease 2019 (COVID-19) pandemic.

CONCLUSION

In a pandemic, personalized health management, such as regular health check-ins provided by home health nurses and home or phone visits provided by volunteers, is crucial for isolated older adults. This pilot program enhanced participants' HRQOL through continuous health monitoring, volunteer care, and nurse support, even during the COVID-19 pandemic. [Journal of Gerontological Nursing, 51(1), 49-58.].

Trends, transitions and patterning in social activity over time among aging women and men: A secondary analysis of the Canadian Longitudinal Study on Aging (CLSA)

Social isolation matters for health and longevity, but little research examines transitions into or out of social isolation or whether transitions are gendered or socially patterned. We described gender-specific trends in breadth and lack of social participation over 6 years overall and by age, country of origin, geographic location, education, wealth, and household income. We used three waves of CLSA data to evaluate changes in social isolation (0-1 activities) and broad social participation (5+ activities) in adults aged 45-75 (n = 24,788), by gender and socio-demographics, in linear and multinomial logistic regressions with post-estimated predicted probabilities. The number of social activities decreased over time, with greater declines for women. About half the sample (more men than women) stayed not highly socially active (<5 activities) and almost 1 in 5 became not highly socially active. Most adults (77 %) remained not socially isolated and 14 % became or remained socially isolated. Women were more likely than men to remain not highly socially active and less likely to have multiple social isolation transitions. Broad social participation changed over time for several subgroups of women and men, with gender differences notable for income levels. Social disparities in social isolation transitions differed by gender only for education. Older age and socioeconomically disadvantaged adults had higher probabilities of becoming socially isolated or becoming less socially active. Findings indicated the diversity of social activities declined as Canadians age into later life and transitions in both social isolation and social participation differed between genders, especially for specific vulnerable subpopulations.

The association between post-lunch napping duration and social participation among the Chinese older adults: a cross-sectional study

BACKGROUND

Social participation (SP) affects the physical and mental health of older adults. Post-lunch napping is a prevalent lifestyle practice observed among older adults, and it may have an impact on their SP. However, research that explores the association between these factors is limited, and we thus aimed to examine this association.

METHODS

We conducted a cross-sectional study using data from the China Health and Retirement Longitudinal Study (CHARLS), focusing on participants aged 60 and older. SP was measured by both the number and frequency of activities based on participant self-reports. The duration of post-lunch napping was also self-reported. We explored the association between post-lunch napping duration and SP using logistic regression, subgroup analysis, and Restrictive Cubic Spline (RCS) analysis.

RESULTS

We included 4259 participants in the study. Post-lunch napping demonstrated a significant association with decreased odds ratio of poor SP in fully adjusted logistic regression models (odds ratio = 0.77, 95% CI: 0.66 ~ 0.90, p = 0.011). Subgroup analysis indicated consistent proportional effects across all subgroups (p > 0.05). RCS analysis revealed a non-linear "J"-shaped relationship between post-lunch napping duration and SP, with the lowest odds ratio corresponding to a duration of 34.37 min.

CONCLUSION

Our study suggests that a moderate duration of post-lunch napping, ideally around 34 min, might have the potential to enhance SP, whereas exceeding this duration could could potentially have a limiting effect. This observation implies that incorporating moderate post-lunch napping into health management strategies for older adults might offer some advantages.

Mediating effect of social support and resilience between loneliness and depression in older adults: A systematic review and meta-analytic structural equation modeling

BACKGROUND

Loneliness is a powerful stressor for depression in older adults, and resilience and social support may mediate this relationship, while the evidence is limited. Hence, our study aims to explore the mediating role of social support and resilience between loneliness and depression and to test possible moderators.

METHODS

We searched 12 databases without language and publish time restrictions and obtained the correlation coefficients. This review constructed two-stage meta-analytical structural equality modeling (MASEA) to test the mediating effect of social support and resilience. Additionally, use one-stage MASEA to test the moderator effect of women proportion, published year, and country of study.

RESULTS

This study included 53 studies and 40, 929 older adults. Loneliness directly affected depression (β = 0.28, 95 % CI: 0.20, 0.36). Social support (β = 0.06, 95 % CI: 0.02, 0.09) and resilience (β = 0.15, 95 % CI: 0.12, 0.18) mediated the relationship. The proportion of women in the sample was moderator (χ2(5) = 11.10, p = 0.05). When the proportion exceeded 60 %, the path coefficient of loneliness and social support (β = -0.45, SE = 0.055) was larger than that of the subgroup below 60 % (β = -0.32, SE = 0.041).

LIMITATIONS

It was indefinite whether the evidence would be supported in longitudinal designs. Influenced by the original research data, it is impossible to calculate the model parameters of gender discrepancy.

CONCLUSIONS

Health aging policy-makers adopting social support and resilience intervention will help strengthen the coping skills of older adults confronting loneliness and reduce the risk of depression.

Prevalence and Prognostic Impact of Multiple Frailty Domain in Japanese Older Adults

OBJECTIVES

In this observational study, we aimed to evaluate the independent and overlapping effects of multiple frailty domains on long-term care insurance (LTCI) use.

DESIGN

Population-based cohort design.

SETTING AND PARTICIPANTS

In total, 9804 community-dwelling older adults were recruited from the National Center for Geriatrics and Gerontology-Study of Geriatric Syndromes.

METHODS

The physical domain of frailty was assessed using the revised Japanese version of the Cardiovascular Health Study criteria. The cognitive domain of frailty was identified as impairment of memory, attention, executive function, or processing speed using standardized thresholds established for each domain in population-based cohorts. The social domain was operationalized using the National Center for Geriatrics and Gerontology-Social Frailty Scale. The use of LTCI was prospectively determined over 60 months using data extracted from the Japanese long-term care insurance system.

RESULTS

The data from 7745 participants were analyzed, of whom 793 (10.2%) required LTCI certification within 60 months (interquartile range: 60-60 months). The Kaplan-Meier curve analysis demonstrated that a high number of frailty domains was associated with incident LTCI use. The proportions of incident LTCI use were 6.0%, 12.4%, 30.1%, and 43.9% for non-frail participants and those with impairments in 1, 2, and 3 frailty domains, respectively. In the multivariate Cox regression model, physical, cognitive, and social domain impairments independently increased the risk of incident LTCI use [physical domain impairment, hazard ratio (HR), 1.67; 95% CI, 1.39-2.01; cognitive domain impairment, HR, 1.59; 95% CI, 1.37-1.84; social domain impairment, HR, 1.26; 95% CI, 1.05-1.50].

CONCLUSIONS AND IMPLICATIONS

Overlapping frailty domains were strongly associated with incident LTCI use among community-dwelling older adults. These findings emphasize the importance of assessing multiple frailty domains and tailoring interventions according to the unique circumstances of older adults to prevent functional disabilities.

Impact of social wellbeing on tooth loss and cognition: A scoping review

OBJECTIVE

The proposed explanations for the association between tooth loss and cognitive function have largely focused on systemic inflammation, mechanoreceptor feedback, and nutritive deficiencies. However, the role of social wellbeing in this relationship remains unknown. The aim of this scoping review is to explore the pathways linking different aspects of social function, collectively grouped under the umbrella of social wellbeing, to tooth loss and cognitive impairment.

DATA AND SOURCES

An electronic database search was performed in PubMed, Scopus, and Embase. Reference lists of relevant articles were also searched. Data on the associations between social wellbeing, cognitive function and tooth loss was charted in an extraction form and summarised qualitatively.

STUDY SELECTION

From the initial search of 3293 records, 71 studies were included in the present review. Forty-seven studies investigated the relationship between social wellbeing and cognition, 21 studies investigated the relationship between social wellbeing and tooth loss, and only 3 studies investigated all three variables.

CONCLUSION

This review demonstrates the need for further research on tooth loss, cognition and social wellbeing in tandem and describes potential psychological, biological, cognitive, and behavioural mechanisms interlinking these factors. While substantial evidence was found for the association between social relationships and cognition, fewer studies explored the potentially bidirectional relationship of social wellbeing and tooth loss.

CLINICAL SIGNIFICANCE

The implications of this review may guide clinicians to focus on the social consequences of tooth loss, which may have broader repercussions on cognitive health. The role of social support in helping older people cope with oral disease and the benefits of fostering positive lifestyle habits should not be underestimated.

Development and validation of a risk prediction model for older adults with social isolation in China

BACKGROUND

Older adults are vulnerable to social isolation due to declining physical and cognitive function, decreased interpersonal interactions, and reduced outdoor activities after retirement. This study aimed to develop and validate a predictive model to assess the risk of social isolation among older adults in China.

METHODS

Using data from the 2011 China Health and Retirement Longitudinal Study (CHARLS). The study cohort was randomly divided into training and validation groups in a 70:30 ratio. We used least absolute shrinkage and selection operator (LASSO) regression analysis with tenfold cross-validation to identify optimal predictive factors and examined the correlates of social isolation using logistic regression. A nomogram was constructed for the predictive model, and its accuracy was assessed using calibration curves. The predictive performance of the model was assessed using area under the receiver operating characteristic (ROC) curve and decision curve analysis (DCA).

RESULTS

From the 2011 CHARLS database, 4,747 older adults were included in the final analysis, of whom 1,654 (34.8%) experienced social isolation. Multifactorial logistic regression identified educational level, marital status, gender, physical activity, physical self -maintenance ability, and number of children as predictive factors for social isolation. The predictive model achieved an AUC of 0.739 (95%CI = 0.722-0.756) in the training set and 0.708 (95%CI = 0.681-0.735) in the validation set. The Hosmer-Lemeshow test yielded P values of 0.111 and 0.324, respectively (both P > 0.05), indicating significant agreement between the nomogram and observed outcomes. The nomogram showed excellent predictive ability according to ROC and DCA.

CONCLUSIONS

The predictive model developed to assess the risk of social isolation in the Chinese older adults shows promising utility for early screening and intervention by clinical healthcare professionals.

National trends in loneliness and social isolation in older adults: an examination of subgroup trends over three decades in Sweden

Introduction

Loneliness and social isolation are public health concerns. This study aimed to examine levels and trends in loneliness and social isolation among older adults (77+ years) in Sweden, assess subgroup variations, and determine associations between loneliness and social isolation.

Methods

The 1992, 2002, 2004, 2011, 2014 and 2021 waves of the Swedish Panel Study of Living Conditions of the Oldest Old (SWEOLD) were analysed through ordered logistic and linear regressions.

Results

On average, 12.5 percent of the participants experienced loneliness often/nearly always, while 6 percent were categorised as severely isolated. Loneliness and social isolation were more common in women, those aged 85+, and persons with basic education, in psychological distress or with mobility limitations. Loneliness was also associated with living alone. No increases in loneliness or isolation were identified; instead, loneliness tended to decrease in groups already experiencing lower levels of loneliness. Loneliness and social isolation were moderately associated each survey year.

Discussion

This study challenges perceptions of high and increasing levels of loneliness and social isolation. Given the impact on health and wellbeing and the ageing of populations, policy and practice should still address these issues and target vulnerable groups. Subgroup analyses in trends are scarce and should be explored further in future research.

The effect of social isolation on the cognitive ability of the oldest old in Chinese nursing homes in post-COVID-19: a moderated chain mediation model

Background

Both pre-or post-COVID-19, older adults residing in nursing homes are at significant risk for social isolation, which is negatively associated with cognitive ability. Currently, the elderly aged 80 years and older are the fastest-growing age group globally. The extent of social isolation within this group post-COVID-19 and its impact on cognitive abilities remain inadequately explored.

Objective

This research aimed to evaluate the prevalence of social isolation among the oldest old in Chinese nursing homes post-COVID-19 and to investigate the mediating and moderating roles of basic activities of daily living (BADL), depression, and subjective socioeconomic status in the relationship between social isolation and cognitive ability.

Methods

This cross-sectional study included 453 participants aged 80 years and older from 11 nursing homes in Ningbo, Zhejiang Province, China. Social isolation was assessed using the Lubben Social Network Scale-6 (LSNS-6), cognitive ability using the Mini-Mental State Examination (MMSE), BADL using the Barthel Index (BI), and depression using the Patient Health Questionnaire-9 items (PHQ-9). Mediation and moderation effects were statistically analyzed using SPSS 23.0 and PROCESS 3.5.

Results

The mean age of the study sample was 87.1 ± 3.8 years, among whom 60.3% (n = 273) were female, and 56.1% experienced social isolation, with 41.1% and 63.1% being isolated from family and friends, respectively. Social isolation indirectly affected cognitive ability through BADL and depression, respectively, and through the chain mediation effect of BADL and depression. Subjective socioeconomic status moderated the relationships between social isolation and BADL and between social isolation and depression. However, no moderating effect of subjective socioeconomic status was found between social isolation and cognitive ability.

Conclusion

This study deepens our understanding of the current state of social isolation and its mechanisms of action in the oldest old post-COVID-19 and provides a new basis for future public health policy development and related research.

Association between social isolation and diversity in food intake by gender in community-dwelling older adults: A cross-sectional study

AIM

Few studies have investigated the relationship between low dietary variety and clearly defined social isolation by gender. This study explored the association between dietary variety and social isolation, classified by operational definition, separately by gender in community-dwelling older adults.

METHODS

This cross-sectional study recruited respondents via mail. A total of 4798 participants aged ≥65 years participated in the on-site assessment. Social isolation was assessed by "lack of conversation," "lack of passive support," "lack of offering support," and "lack of social participation." Dietary variety was evaluated using the Dietary Variety Score (DVS).

RESULTS

The participants' median age was 73 (interquartile range 25-75: 69-77) years, and 2147 (44.7%) were male. After adjusting for covariates, with regard to male participants, a lack of offering support (β = -0.051, P = 0.019) and a lack of social participation (β = -0.089, P < 0.001) were associated with a low DVS. For female participants, only a lack of social participation was related to a low DVS (β = -0.067, P < 0.001). A lack of conversation and passive support were not associated with a low DVS for both genders (P >0.05).

CONCLUSION

The results indicate that encouraging social participation, regardless of gender, as well as preventing a lack of offering support for others among men, may contribute to improving individuals' DVS. Geriatr Gerontol Int 2024; 24: 930-938.

Proud but Powerless: A Qualitative Study of Homecare Workers´ Work Experiences and Their Suggestions for How Care for Homebound Older Adults Can Be Improved

Many older adults with complex care needs live at home due to ageing-in-place policies. This study explored homecare workers' experiences and suggestions for improvements of care. Twelve semi-structured interviews were analyzed thematically, and revealed pride, capability, and satisfaction in their work, yet they feel undervalued and lack support. They advocate for integrated care models, recognition of their competence, flexible work approaches, and committed leadership. This would enhance patient care and address their own working conditions, addressing concerns from being relegated to the bottom of the hierarchy. They emphasize the need for comprehensive approaches, spanning from housekeeping to end-of-life palliative care.

AI model for predicting adult cochlear implant candidacy using routine behavioral audiometry

OBJECTIVE

To describe an AI model to facilitate adult cochlear implant candidacy prediction based on basic demographical data and standard behavioral audiometry.

METHODS

A machine-learning approach using retrospective demographic and audiometric data to predict candidacy CNC word scores and AzBio sentence in quiet scores was performed at a tertiary academic center. Data for the model were derived from adults completing cochlear implant candidacy testing between January 2011 and March 2023. Comparison of the prediction model to other published prediction tools and benchmarks was performed.

RESULTS

The final dataset included 770 adults, encompassing 1045 AzBio entries, and 1373 CNC entries. Isophoneme scores and word recognition scores exhibited strongest importance to both the CNC and AzBio prediction models, followed by standard pure tone average and low-frequency pure tone average. The mean absolute difference between the predicted and actual score was 15 percentage points for AzBio sentences in quiet and 13 percentage points for CNC word scores, approximating anticipated test-retest constraints inherent to the variables incorporated into the model. Our final combined model achieved an accuracy of 87 % (sensitivity: 90 %; precision: 80 %).

CONCLUSION

We present an adaptive AI model that predicts adult cochlear implant candidacy based on routine behavioral audiometric and basic demographical data. Implementation efforts include a public-facing online prediction tool and accompanying smartphone program, an embedded notification flag in the electronic medical record to alert providers of potential candidates, and a program to retrospectively engage past patients who may be eligible for cochlear implantation based on audiogram results.

Factors associated with the intrinsic capacity in older adults: A scoping review

INTRODUCTION

In 2015, the term 'intrinsic capacity' (IC) was proposed by the World Health Organisation to promote healthy aging. However, the factors associated with IC are still discrepant and uncertain.

AIM

We aim to synthesise the factors connected with IC.

METHODS

This scoping review followed the five-stage framework of Arksey and O'Malley and was reported using PRISMA-ScR guidelines.

RESULTS

In all, 29 articles were included. IC of older adults is associated with demographic characteristics, socioeconomic factors, disease conditions, behavioural factors, and biomarkers. Age, sex, marital status, occupation status, education, income/wealth, chronic diseases, hypertension, diabetes, disability, smoking status, alcohol consumption, and physical activity were emerged as important factors related to the IC of older adults.

CONCLUSIONS

This review shows that IC is related to multiple factors. Understanding these factors can provide the healthcare personnel with the theoretical basis for intervening and managing IC in older adults.

RELEVANCE TO CLINICAL PRACTICE

The influencing factors identified in the review help to guide older adults to maintain their own intrinsic capacity, thereby promoting their health and well-being. The modifiable factors also provide evidence for healthcare personnel to develop targeted intervention strategies to delay IC decline.

NO PATIENT OR PUBLIC CONTRIBUTION

As this is a scoping review, no patient or public contributions are required.

Combined impact of physical frailty and social isolation on use of long-term care insurance in Japan: A longitudinal observational study

OBJECTIVES

The combined effect of physical frailty and social isolation on the need to make use of long-term care insurance (LTCI) among older adults remains unknown. Thus this study investigates the association between physical frailty, social isolation, and the use of LTCI among older adults in Japan.

STUDY DESIGN

This is a prospective observational study.

MAIN OUTCOME MEASURES

Physical frailty is defined as limitations in strength, mobility, and physical activity, as well as exhaustion and weight loss. People with one or two indicators were categorized as pre-frail. Participants with a score of 1 point or more on the social isolation scale were defined as being socially isolated. Participants were followed up monthly for two years to check whether incident certification of care had been required.

RESULTS

Data on 4576 community-dwelling independent older adults (mean age, 73.9 ± 5.5 years, 2032 men, 2544 women) were analyzed. A time-dependent Cox proportional hazards regression model showed that individuals with pre-frailty without social isolation (hazard ratio [HR] 2.02, 95 % confidence interval [CI] 1.40-2.91), pre-frailty with social isolation (HR 2.36, 95 % CI 1.62-3.43), frailty without social isolation (HR 2.98, 95 % CI 1.83-4.85), and frailty with social isolation (HR 3.19, 95 % CI 2.07-4.91) had significantly higher risks of needing to make use of LTCI than those with no frailty and without social isolation. This higher risk was non-significant among individuals with no frailty and social isolation (HR 1.28, 95 % CI 0.78-2.10).

CONCLUSION

Combined frailty and social isolation among older adults should be addressed to prevent adverse health outcomes, including use of LTCI.

Association Between Ego-Resilience and Social Isolation Among Urban Older People

Social isolation among older adults affects their physical and mental health. Ego-resilience is associated with flexible adaptation to various environments and acceptable behaviors. However, its association with social isolation among older people is unclear. Therefore, a health survey was conducted with 510 adults aged 65 years or older to assess social isolation, its associated factors, and ego resilience. The results showed that the social isolation group had a lower median ego-resiliency scale score (42.0) compared to the non-social isolation group (38.0). The social isolation group were mostly males without spouses, took time to move, had more depressive moods, and poorer subjective health status. The non-social isolated group had faster maximum walking speed. Low ego-resilience was newly identified as a factor associated with social isolation among older people, as were being male, having no spouse, and depressive symptoms. Mediation analysis revealed that ego-resilience affected social isolation and was partially mediated by depressive symptoms.

Association between willingness to participate in physical and social activities and loneliness in older adults: A stratified analysis by social isolation status

BACKGROUND

This study aimed to examine the relationship between willingness to participate in physical activity (PA) and social activity (SA) and loneliness among community-dwelling older adults and to identify differences depending on whether or not they were socially isolated.

METHOD

This study included 4,590 participants aged 65 years or older. The study used the UCLA Loneliness Scale and a questionnaire to assess the willingness to participate in PA/SA. Social isolation was defined as the presence of two or more of the following conditions: domestic isolation, less social contact, and social disengagement. A binomial logistic regression analysis was conducted with loneliness as the dependent variable and willingness to participate in PA/SA as the independent variable, stratified by social isolation.

RESULTS

Those who experienced loneliness (n=1,595, 34.7%) were significantly more unwilling to participate in PA/SA than those who did not (p<0.05). For those in social isolation (n=321, 7.0%), there was no association between willingness to participate in PA/SA and loneliness [odds ratio (95% confidence interval); PA, 0.89 (0.41-1.92); SA, 0.52 (0.22-1.20)]. Those without social isolation showed no association between willingness to participate in PA and loneliness; however, there was a significant association with willingness to participate in SA [PA, 1.05 (0.81-1.36); SA, 0.54 (0.41-0.72)].

CONCLUSION

Among people without social isolation, the willingness to participate in SA was associated with reduced loneliness. However, the results suggest that environmental factors may limit activity and increase loneliness among people with social isolation, even when willing to participate in PA/SA.

Classification of social isolation and factors related to loneliness and life satisfaction among socially isolated individuals

PURPOSE

To operationally divide social isolation into four categories and examine the factors associated with social isolation and its relationship with loneliness and life satisfaction.

METHODS

The participants were community-dwelling older adults aged ≥ 60 years who underwent functional health examinations in Chita City, Aichi, Japan. Multiple regression analysis was used to examine the associations between social isolation, loneliness, and life satisfaction.

RESULTS

A total of 5,066 participants (mean age 72.0 ± ± 6.3 years, female: 55.4 %) were included in the study. Multiple regression analysis showed that the number of experiences of social isolation, classified into four categories, was positively correlated with loneliness (β = 0.188, ΔR2 = 0.244, p < 0.001) and negatively correlated with life satisfaction (β = -0.076, ΔR2 = -0.178, p < 0.001).

CONCLUSIONS

Multiple experiences of social isolation classified into four categories were found to be associated with higher loneliness and lower life satisfaction.

Social participation and tooth loss, vision, and hearing impairments among older Brazilian adults

BACKGROUND

Vision and hearing impairments can reduce participation in social activities. Given the prominent role of the mouth in face-to-face interactions, this study evaluated the associations of tooth loss, vision, and hearing impairments with social participation among older adults.

METHODS

This analysis included 1947 participants, aged 60+ years, who participated in three waves (2006, 2010, and 2015) of the Health, Wellbeing and Aging Study (SABE) in Brazil. Social participation was measured by the number of formal and informal social activities (requiring face-to-face interaction) participants were regularly involved in. Teeth were counted during clinical examinations and categorized as 0, 1-19, and 20+ teeth. Reports on vision and hearing impairments were classified into three categories (good, regular, and poor). The associations of each impairment with the 9-year change in the social participation score were tested in negative binomial mixed-effects models adjusting for time-variant and time-invariant covariates.

RESULTS

Each impairment was associated with the baseline social participation score and the annual rate of change in the social participation score. Participants with 1-19 (incidence rate ratio: 0.96, 95% CI: 0.91-1.01) and no teeth (0.92, 95% CI: 0.87-0.97), those with regular (0.98, 95% CI: 0.95-1.01) and poor vision (0.86, 95% CI: 0.81-0.90), and those with regular (0.94, 95% CI: 0.91-0.98) and poor hearing (0.91, 95% CI: 0.87-0.95) had lower baseline social participation scores than those with 20+ teeth, good vision, and good hearing, respectively. Furthermore, participants with 1-19 (0.996, 95% CI: 0.990-1.002) and no teeth (0.994, 95% CI: 0.987-0.999), those with regular (0.996, 95% CI: 0.992-0.999) and poor vision (0.997, 95% CI: 0.991-1.003), and those with regular (0.997, 95% CI: 0.992-1.001) and poor hearing (0.995, 95% CI: 0.990-0.999) had greater annual declines in the social participation score than those with 20+ teeth, good vision and good hearing, respectively.

CONCLUSION

This 9-year longitudinal study shows that tooth loss, vision, and hearing impairments are associated with reduced social participation among older adults.