Mediating role of health literacy in relationship between frailty and health-related quality of life in community-dwelling older adults

• Published in: PloS one Vol. 19; no. 5; p. e0303164
• Main Authors: Kim, Hee-Sun, Kim, Jinhee, Kim, Ji-Ah
• Format: Journal Article
• Language: English
• Published: United States Public Library of Science 30.05.2024; Public Library of Science (PLoS)
• Subjects: Adults; Aged; Aged, 80 and over; Aging; Analysis; Biology and Life Sciences; Data analysis; Dependent variables; Disease control; Female; Frail Elderly - psychology; Frailty; Frailty - psychology; Health aspects; Health care; Health education; Health Literacy; Health services utilization; Humans; Independent Living - psychology; Independent variables; Information management; Literacy; Male; Mediation; Mediators; Medicine and Health Sciences; Mental health; Older people; People and Places; Phenotypes; Quality of Life; Republic of Korea; Research and Analysis Methods; Risk factors; Risk taking; Social Sciences; Surveillance systems; Surveys; Surveys and Questionnaires; Republic of Korea; South Korea
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0303164

The aim of this study was to investigate the mediating effects of health literacy on the relationship between frailty and health-related quality of life (HRQOL) among community-dwelling older adults. This study used the Korean Frailty and Aging Cohort Database (KFACD) for secondary data analysis. We selected data from 1,631 people without missing main variable values for analysis. Frailty was determined based on the modified Fried's phenotype [MFP], and HRQOL was measured using the Korean version of the 5-level EuroQol questionnaire (EQ-5D-5L). Health literacy was assessed using the questions on the Behavioral Risk Factor Surveillance System (BRFSS) used by the U.S. Center for Disease Control and Prevention. To examine the mediating role of health literacy in the relationship between frailty and HRQOL, Baron & Kenny's three-step mediating effect verification method was utilized. The participants had a mean frailty score of 1.37±1.02, health literacy score of 8.56±2.59, and HRQOL score of 0.84±0.10. Frailty was negatively correlated with health literacy (r = -0.27, p < .001) and HRQOL (r = -0.32, p < .001), while health literacy was positively correlated with HRQOL (r = 0.34, p < .001). We observed that health literacy played a partial mediating role in the relationship between frailty and HRQOL. To increase older adults' HRQOL, measures that directly prevent and manage frailty as well as interventions that target the enhancement of health literacy are needed.