The association of health literacy, numeracy and graph literacy with frailty

Ethnicity and frailty: A systematic review of association with prevalence, incidence, trajectories and risks

BACKGROUND

Ethnic variations in frailty are not fully understood. This systematic review examined ethnic differences in the prevalence, incidence and trajectories of frailty; associations between frailty and sociodemographic/lifestyle risk-factors; and health-related outcomes of frailty.

METHODS

We searched four electronic databases from 2000 to July 2023 using terms for ethnicity and frailty.

INCLUSION CRITERIA

observational studies assessing frailty in adults ≥ 18 years from community-based settings, including care homes; ethnicity defined by race, country of birth, language, ancestry, or culture. We supplemented searches with manual citation and reference list searches. Outcomes included prevalence, incidence, and transitions of frailty; factors associated with frailty; and health-related outcomes (e.g., mortality). Two reviewers independently screened all articles.

RESULTS

We included 82 studies, representing data from 13 countries plus two multi-national samples. Across the included countries, frailty prevalence was higher in minority groups compared to majority groups. Ethnic differences appear sensitive to methods used to measure frailty. Two United States-based studies found that ethnic differences were independent of sociodemographic differences such as income or education. Six studies from the United States or United Kingdom showed that Black and South-Asian people, respectively, had higher frailty incidence or more rapid frailty progression. Two studies showed that frailty was associated with mortality across ethnic groups but with some small differences in magnitude between groups.

CONCLUSION

Ethnic disparities in frailty prevalence persist across community-based settings in different countries and are not fully explained by known inequalities. Addressing these disparities will likely require careful frailty measurement and assessment; confronting structural inequalities; and tailoring interventions to the needs of minoritised populations.

Effect of high health literacy and the frequency of social activities on preventing disability

OBJECTIVE

This longitudinal study aimed to identify the impact of high health literacy (HL) and participation in more social activities (SA) on preventing the risk of disability among community-dwelling older adults.

METHODS

Participants were 3,486 community-dwelling older adults who underwent functional health examinations. Participants were classified into four groups based on High (Low) HL and High (Low) SA. A Cox proportional hazards model was used to assess the risk of disability over five years among the four groups.

RESULTS

During follow-up, 339 patients with disabilities were observed. In the Cox proportional hazards analysis, only High HL and High SA groups were significantly associated with a lower hazard ratio (HR) for disability onset (HR = 0.71, 95% confidence interval = 0.51-0.99).

CONCLUSIONS

In community-dwelling older adults, high HL and increased SA effectively reduced the risk of disability compared to low HL and low SA.

Health Literacy and Exercise to Treat Frailty in Community-Dwelling Older Adults: A National Survey Study

Aging is a major challenge facing modern society and has attracted global attention. Studies have provided some initial evidence that health literacy plays a role in determining frailty; however, most of these studies have used small convenience samples of individuals recruited from geographically limited areas, thus limiting the generalizability of their findings. The present study explored the relationships among health literacy, exercise, and frailty in Taiwanese older adults by using the data of a national population-based survey. We retrieved data from the Taiwan Longitudinal Study on Aging, a population-based survey. We gathered the 2015 data on the age, sex, education level, marital status, exercise habits, and activities of daily living (ADLs) of each eligible respondent. We evaluated the respondents’ health literacy by using a nine-item health literacy scale and categorized their health literacy level as low, medium, or high. Frailty was diagnosed according the Fried criteria. Our final sample consisted of 7702 community-dwelling older adults (3630 men and 4072 adults). Of these, 25.3% had low health literacy. The proportion of respondents who had two or more disabilities in terms of ADLs or instrumental ADLs was higher among the women (36.4% and 12.6%, respectively), and regular exercise was more common among the men (19.6%). Frailty was more prevalent among the women; the prevalence of frailty among the male and female respondents was 4.5% and 8.1%, respectively. High health literacy and regular exercise were protective factors for frailty. According to our results, poor health literacy is a risk factor for prefrailty and frailty, and regular exercise is significantly negatively associated with prefrailty and frailty. Additional studies are necessary to define practical strategies for reducing the risks of disability and death for older adults with low health literacy who do not exercise regularly, thereby improving their quality of life.

Impact of Health Literacy on the Progression of Frailty after 4 Years among Community-Dwelling Older Adults

Health literacy (HL) promotes healthy lifestyle behaviors among older adults, and its relationship with frailty remains unclear. This study examined whether HL is a predictor of frailty progression among community-dwelling older adults. Data from two surveys conducted in 2012 and 2016 involving older residents (mean age, 71.6 ± 4.6 years) of Kashiwa City, Chiba Prefecture, Japan were used. Only healthy individuals without frailty and cognitive impairments participated in the 2012 assessment, where the Kihon Checklist (KCL), HL, and other variables were assessed. Logistic and multiple logistic analyses were used to assess the effects of HL and other factors on frailty between the 'high HL' vs. 'low HL' groups in 2012 and between the 'robust' vs. 'frailty-progressing' groups in 2016. Of the 621 robust participants, 154 (25.4%) had progression of frailty in 2016, which was significantly associated with advanced age, higher KCL score, lower HL, poor mental health, and lack of social support. Furthermore, low HL was a predictor of frailty progression. Low HL may be associated with frailty progression. The obtained results suggest that increased health literacy should be effective in preventing frailty for community-dwelling older residents.

Associated Factors and Health Outcomes of Health Literacy and Physical Frailty Among Older Adults: A Systematic Review

The current review aimed to systematically describe and synthesize health outcomes and factors associated with health literacy and physical frailty among older adults. Seven electronic databases were searched for observational studies published in English, from database inception to March 31, 2021. The study protocol was registered with PROSPERO. Two reviewers independently performed study selection, data extraction, and quality assessment using the Newcastle-Ottawa Scale. Among the 479 studies identified, nine (6,337 participants) met eligibility criteria. Common factors associated with health literacy and physical frailty were lower educational level, multiple comorbidities, and cognitive dysfunction. Health literacy was mainly associated with self-reported outcomes, whereas physical frailty was related to clinical outcomes. Prospective studies are required to identify the impact of limited health literacy, combined with frailty, on long-term health outcomes in older adults. Health literacy interventions should consider the older adult population with multiple comorbidities. [Research in Gerontological Nursing, xx(x), xx-xx.].

Health Literacy and Frailty in Community-Dwelling Older Adults: Evidence from a Nationwide Cohort Study in South Korea

Health literacy is closely associated with poor health outcomes and mortality. However, only a handful of studies have examined the association between health literacy and frailty status. The current study used data from a nationwide sample of Korean adults aged 70-84 collected from 10 cities, each of which represents a different region of South Korea (n = 1521). We used the propensity score matching (PSM) method to minimize the potential selection bias and confounding factors that are present in observational studies. After PSM, demographic and health-related characteristics between the limited health literacy (n = 486) and the nonlimited health literacy (n = 486) groups were not significantly different. Multinomial logistic regression analyses were conducted for the PSM-matched sample to examine the association between health literacy and frailty outcomes, where the robust group was set as a reference. Limited health literacy significantly increased the risk of pre-frailty (RRR = 1.45, p = 0.02) and frailty (RRR = 2.03, p = 0.01) after adjusting for demographic and health-related factors. Our findings underscore the need to foster health literacy programs and provide preliminary evidence to inform tailored intervention programs so that we might attenuate the risk of frailty in the older population.

[Effects of health literacy on frailty status at two-year follow-up in older adults: A prospective cohort study]

AIM

To investigate the longitudinal association between health literacy and frailty status at two-year follow-up in community-dwelling older adults.

METHODS

A total of 218 older adults (mean age, 72.5±4.9 [range 65-86] years old; men, n=81) without frailty at baseline participated in this study. Functional health literacy was assessed using the Newest Vital Sign (NVS). Comprehensive health literacy was assessed using the 47-item European Health Literacy Survey Questionnaire (HLS-EU-Q47). Comprehensive health literacy indices are constructed as a general health literacy index comprising all items along with the three sub-indices of health care, disease prevention, and health promotion domains. Demographic data and other potential confounding factors were also assessed. The total Kihon checklist score was used to monitor the presence of frailty based on a score of ≥8 at the 2-year follow-up (postal survey).

RESULTS

Of the 253 participants in the follow-up survey, 226 responded (response rate: 89.3%). Excluding the 8 participants with missing values, 25 (11.5%) of the 218 were reported to be frail. A multiple logistic regression analysis indicated that comprehensive health literacy (total score of HLS-EU-Q47) was independently associated with a lower risk of frailty (odds ratio per standard deviation = 0.54, 95% confidence interval = 0.33-0.87) after adjusting for the covariates (age, gender, education, body mass index, gait speed, cognitive function, and comorbidities). The health care and disease prevention domain scores of the HLS-EU-Q47 were also independently associated with a lower risk of frailty. Functional health literacy (NVS score) was not associated with frailty.

CONCLUSIONS

Older adults with higher comprehensive health literacy are less likely to be frail at two-year follow-up than those with a lower literacy.

Pathways among Frailty, Health Literacy, Acculturation, and Social Support of Middle-Aged and Older Korean Immigrants in the USA

Culturally and linguistically different immigrants in the U.S. are considered populations with low health literacy in general, thereby having a high risk of negative health outcomes such as frailty. The purpose of this study is to identify the effects of social support and acculturation on the relationship between health literacy and frailty of Korean immigrants in existing models of health literacy. A total of 244 Korean immigrants aged 50 years and older residing in Southern United States (Alabama and Georgia) were recruited. Path analysis was used to examine the pathways among variables, and the indirect effects of health literacy were analyzed. The results revealed that health literacy and social support directly influenced frailty; social support and acculturation were identified to influence health literacy. Health literacy had a partial mediating effect in the relationship between social support and frailty and a complete mediating effect in the relationship between acculturation and frailty. Therefore, to prevent frailty, it is necessary to consider enhancing immigrants' health literacy by elevating acculturation and social supports.

Association between cognitive reserve dimensions and frailty among older adults: A structured narrative review

Frailty is a broadly investigated geriatric condition, which is characterized by an increased vulnerability to stressors. It represents an extremely relevant public health issue, increasingly conceptualized in a multidimensional perspective. The concept of cognitive reserve (CR), as originally conceptualized by Stern, has been developed in the past decades as a potential factor able to determine individual differences in cognitive vulnerability and trajectories occurring with aging. Our purpose was to provide a comprehensive review of the literature exploring the relationship between CR dimensions, selected according to the Stern model, and frailty status. A review of the literature on the association between potential CR dimensions and frailty was carried out through PubMed, Web of Knowledge and Scopus. CR expressed in terms of education, occupation, premorbid intelligence quotient and leisure time activities was associated with frailty in both cross-sectional and longitudinal observations. The majority of reviewed evidence suggests a potential protective role of CR factors against the onset and the worsening of frailty among older adults. To the best of our knowledge, this is the first attempt to provide a comprehensive overview regarding the association between CR dimensions and frailty. Education, occupation, premorbid intelligence quotient and leisure time activities are able to interact with the general concept of frailty, rather than simply affecting the cognitive trajectory towards dementia. The lack of a unique and operationalized approach to the assessment of CR, as well as the wide heterogeneity of frailty evaluation tools and criteria, denote some methodological critical issues that need to be overcome. Geriatr Gerontol Int 2020; 20: 1005-1023..

The Relationship Between Health Literacy, Social Support, Depression, and Frailty Among Community-Dwelling Older Patients With Hypertension and Diabetes in China

Population aging is one of the major challenges facing modern society and has attracted global attention. With population aging becoming a global phenomenon, the impact of age-related diseases on health is increasing rapidly. Frailty is one of the most pressing issues facing older adults. The purpose of this study was to explore the interrelationship between health literacy, social support, depression, and frailty among older patients with hypertension and diabetes in China. No studies have investigated the mediating effects of social support and depression between health literacy and frailty. The findings of this study can be applied to help ameliorate frailty in older hypertensive and diabetic patients. Data were collected from 637 older hypertensive and diabetic patients aged 65 years and older in Sichuan Province, China. We used structural equation modeling (SEM) to test the hypothesized relationship among the variables. The results showed that 42.4% of the participants suffered from frailty. The mean scores for health literacy, social support, depression, and frailty were 13.6 ± 5.7, 35.7 ± 6.5, 4.0 ± 3.4, and 3.5 ± 2.1, respectively. Social support had a direct negative association with frailty (β = −0.128, 95%CI: [−0.198, −0.056]), and depression had a direct positive association with frailty (β = 0.326, 95%CI: [0.229, 0.411]), while social support had no direct association with depression. Health literacy had a direct positive association with social support (β = 0.151, 95%CI: [0.077, 0.224]) and a direct negative association with depression (β = −0.173, 95%CI: [−0.246, −0.1]), while health literacy had an indirect negative association with frailty through the mediating effect of social support and depression. To mitigate frailty in older patients with hypertension and diabetes, measures that provide social support, and enhance health literacy, while alleviating depression, should be considered, along with greater attention to patients who are divorced, widowed, or unmarried, those with comorbidities, and those with lower socioeconomic status.