The epidemiological investigation of major depressive disorder and dysthymia in mosuo ethnic minority of Ninglang area, Yunnan province

Abstract

Objective To explore the prevalence of depressive disorder in the Mosuo ethnic minority in Ninglang district, Yunnan Province. Methods By stratified random sampling, 1 121 Mosuo subjects aged 15 or above were selected and assessed by the MINI-international neuropsychiatric interview according to the Structured Clinical Interview for DSM-V-TR Axis I Disorders-Patient Edition for mental disorders. Results The standardized time-point prevalence of major depressive disorder in Mosuo nationality was 1.74%, and 1.69%(95%CI=1.32%-2.15%) in males and 1.77%(95%CI=1.39%-2.15%) in females. There was no statistically significant difference in the prevalence of major depressive disorder between males and females (χ2=0.051, P>0.05). The standardized time-point prevalence of dysthymic disorder in Mosuo nationality was 0.78%, and 0.66%(95%CI=0.54%-0.78%)in males and 0.88%(95%CI=0.74%-1.02%)in females (χ2=1.232, P>0.05). Those aged 40-54 years old had the highest adjusted prevalence of depressive episodes(1.48%(95%CI=0.77%-2.18%)). Conclusion The prevalence of depressive disorder in Mosuo nationality is in a low level, and the middle-age Mosuo people has the highest time-point prevalence. Key words: Mosuo nationality; Major depressive disorder; Dysthymic disorder; Epidemiological investigation