“…In Mainland China, the growth of the aging people has led to research interest in depression in older people Gao et al, 2009;Lai et al, 2010;Wen et al, 2010). The published studies of depression prevalence in older people in Mainland China showed much variation in the results, varying between 3.86% and 30.8% Gao et al, 2009;Lai et al, 2010;Wen et al, 2010). In developed countries, a number of risk factors for the occurrence of depression in old age have been isolated: low socioeconomic status (SES), low social support, poor health status, disability, adverse life events and female gender (Copeland et al, 1999b;Wilson et al, 1999;Cole and Dendukuri, 2003).…”