Yu-Hung Chang1, I-Chien Wu2, Chao A Hsiung2. 1. Department of Public Health, China Medical University, Taichung, Taiwan. 2. Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Taiwan.
Abstract
OBJECTIVE: This study examined the effect of daily life reading activity on the risk of cognitive decline and whether the effect differs regarding education levels. DESIGN: A longitudinal study with 6-, 10-, and 14-year follow-up. SETTING: Face-to-face interviews with structured questionnaires at home. PARTICIPANTS: A representative sample of 1,962 Taiwanese community-dwelling older persons aged 64 and above, followed up in four waves of surveys over 14 years. MEASUREMENTS: Baseline reading frequencies were measured based on a scale of leisure activity. The Short Portable Mental Status Questionnaire was used to measure cognitive performance. We performed logistic regression to assess associations between baseline reading and later cognitive decline. Interaction terms between reading and education were to compare the reading effects on cognitive decline at different education levels. RESULTS: After adjusting for covariates, those with higher reading frequencies (≥1 time a week) were less likely to have cognitive decline at 6-year (adjusted odds ratio [AOR]: 0.54; 95% confidence interval [CI]: 0.34-0.86), 10-year (AOR: 0.58, 95% CI: 0.37-0.92), and 14-year (AOR: 0.54, 95% CI: 0.34-0.86); in a 14-year follow-up, a reduced risk of cognitive decline was observed among older people with higher reading frequencies versus lower ones at all educational levels. CONCLUSIONS: Reading was protective of cognitive function in later life. Frequent reading activities were associated with a reduced risk of cognitive decline for older adults at all levels of education in the long term.
OBJECTIVE: This study examined the effect of daily life reading activity on the risk of cognitive decline and whether the effect differs regarding education levels. DESIGN: A longitudinal study with 6-, 10-, and 14-year follow-up. SETTING: Face-to-face interviews with structured questionnaires at home. PARTICIPANTS: A representative sample of 1,962 Taiwanese community-dwelling older persons aged 64 and above, followed up in four waves of surveys over 14 years. MEASUREMENTS: Baseline reading frequencies were measured based on a scale of leisure activity. The Short Portable Mental Status Questionnaire was used to measure cognitive performance. We performed logistic regression to assess associations between baseline reading and later cognitive decline. Interaction terms between reading and education were to compare the reading effects on cognitive decline at different education levels. RESULTS: After adjusting for covariates, those with higher reading frequencies (≥1 time a week) were less likely to have cognitive decline at 6-year (adjusted odds ratio [AOR]: 0.54; 95% confidence interval [CI]: 0.34-0.86), 10-year (AOR: 0.58, 95% CI: 0.37-0.92), and 14-year (AOR: 0.54, 95% CI: 0.34-0.86); in a 14-year follow-up, a reduced risk of cognitive decline was observed among older people with higher reading frequencies versus lower ones at all educational levels. CONCLUSIONS: Reading was protective of cognitive function in later life. Frequent reading activities were associated with a reduced risk of cognitive decline for older adults at all levels of education in the long term.
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