Social support moderates suicidal ideation among Chinese nursing home residents with limited activities of daily living and loneliness.

Rare studies are available exploring the impact of limited activities of daily living (ADL), loneliness on suicidal ideation, and protective effect of social support on their relationships in nursing home residents. This study aims to examine these links in a sample of older adults from nursing homes. A stratified random sampling was adopted to recruit 538 respondents from 37 nursing homes in Jinan. Suicidal ideation, limited ADL, social support and loneliness were assessed through instruments of Beck Suicidal Ideation Scale, ADL scale, Perceived Social Support Scale and UCLA Loneliness Scale. Relationships of latent variables were tested using Path Analysis in this cross-sectional study. The mediating effect of loneliness was significant on the association between limited ADL and suicidal ideation, and the mediation model was multiply moderated by social support with significant coefficients and acceptable model fitness. This study demonstrated the multiple moderating role of social support in the effect of limited ADL and loneliness on suicidal ideation among nursing home residents. More efforts are suggested in providing more available external resources to seniors' mental health for reducing risk of influencing factors of suicidal ideation.