Journal of International Psychiatry

Objective To investigate the prevalence, demographic characteristics and social life function of the major depressive disorder in the rural left behind elderly over 60 years old in Gansu．Methods From Novembe in 2017 to June in 2018, Using multi-stage stratified cluster randon sampling method the rural left behind elderly over 60 years old in Gansu,a lotal of 6000. By the extended version general health questionnaire (GHQ-12) and the Structured Clinical Interview for DSM-IV-TR (SCID-I/P), were screened and diagnosed all of the people who were incluuded in the population.Functional status was assessed by the general functional assessment scale(GAF). Results Total 6000 subjects were completed the survey. ①The adjusted current prevalence of the major depressive disorder was 92.43‰（95%CI：7.99%-10.60%）and lifetime prevalence was 92.87‰（95%CI：9.06% -10.70%）．②The time point prevalence in women（118.72‰）was higher than that in men（62.43‰）, and the unmarried（123.04‰）was higher than that married（84.28‰）．There was no difference in prevalence among different age groups（P＞0.05）. The prevalence of major depressive disorder in Tibetan nationalities is higher than that in Han and Hui nationalities（P＜0.01）. Low income and poor marriage are risk factors for major depressive disorder. The GAF score of major depressive disorder was 52.56±10.13, and 83.69% was moderate to severe functional impairment.Conclus-ions The prevalence of major depressive disorder among the elderly left behind in rural areas over 60 years old in Gansu province is high. Severity is moderate to severe . The treatment rate and psychiatric treatment rate are relatively lower.

Major depressive disorder；Rural left behind elderly；Epidemiologic studies；Prevalence