Vision-specific risk factors impacting self-rated health among older men in urban China: a population-based cross-sectional study

BACKGROUND: Self-rated health (SRH) has been well documented as an important assessment of health status among the older adults. Interestingly, visual ability has been reported to have a considerable impact on the quality of life of the older adults. This study clarified vision-specific risk factors impacting SRH among older men without cognitive impairment in order to optimise healthcare for the older adults. METHODS: A population-based cross-sectional study was conducted in urban areas of Liaoning Province. A stratified sampling method was used and all men aged ≥65 years and living in sampled communities without dementia were interviewed between March and November 2012. SRH, visual ability and factors including demographic characteristics, physical conditions, lifestyle factors, social psychological factors and social activities, were measured. 1884 effective responses were received (effective response rate, 84.8%) and 1724 individuals were enrolled after further cognitive screening. RESULTS: The mean age was 72.9±5.9 (mean±SD). Of individuals with good and poor visual ability, 38.3% and 33.0% reported good SRH, respectively. The characteristics between different visual ability groups were significantly different. Interactions between visual ability and four items had significant effects on SRH. In good visual ability group, chronic disease had the strongest association with good SRH followed by participating in entertainment, taking a walk, filial piety and alcohol consumption. In poor visual ability group, taking a walk had the strongest association with good SRH followed by participating in entertainment, hearing ability, smoking, quality of sleep, going out alone to distant places and alcohol consumption. CONCLUSIONS: A good SRH status, even among the individuals with good visual ability, had a low prevalence among older men in urban areas. The risk factors impacting SRH was vision-specific. Physical conditions were crucial for SRH among those with good visual ability. In contrast, lifestyle factors were prominent for those with poor visual ability.