PLoS ONE (Jan 2014)

Associations of educational attainment, occupation, social class and major depressive disorder among Han Chinese women.

  • Jianguo Shi,
  • Yan Zhang,
  • Feihu Liu,
  • Yajuan Li,
  • Junhui Wang,
  • Jonathan Flint,
  • Jingfang Gao,
  • Youhui Li,
  • Ming Tao,
  • Kerang Zhang,
  • Xumei Wang,
  • Chengge Gao,
  • Lijun Yang,
  • Kan Li,
  • Shenxun Shi,
  • Gang Wang,
  • Lanfen Liu,
  • Jinbei Zhang,
  • Bo Du,
  • Guoqing Jiang,
  • Jianhua Shen,
  • Zhen Zhang,
  • Wei Liang,
  • Jing Sun,
  • Jian Hu,
  • Tiebang Liu,
  • Xueyi Wang,
  • Guodong Miao,
  • Huaqing Meng,
  • Yi Li,
  • Chunmei Hu,
  • Yi Li,
  • Guoping Huang,
  • Gongying Li,
  • Baowei Ha,
  • Hong Deng,
  • Qiyi Mei,
  • Hui Zhong,
  • Shugui Gao,
  • Hong Sang,
  • Yutang Zhang,
  • Xiang Fang,
  • Fengyu Yu,
  • Donglin Yang,
  • Tieqiao Liu,
  • Yunchun Chen,
  • Xiaohong Hong,
  • Wenyuan Wu,
  • Guibing Chen,
  • Min Cai,
  • Yan Song,
  • Jiyang Pan,
  • Jicheng Dong,
  • Runde Pan,
  • Wei Zhang,
  • Zhenming Shen,
  • Zhengrong Liu,
  • Danhua Gu,
  • Xiaoping Wang,
  • Xiaojuan Liu,
  • Qiwen Zhang,
  • Yihan Li,
  • Yiping Chen,
  • Kenneth S Kendler

DOI
https://doi.org/10.1371/journal.pone.0086674
Journal volume & issue
Vol. 9, no. 1
p. e86674

Abstract

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The prevalence of major depressive disorder (MDD) is higher in those with low levels of educational attainment, the unemployed and those with low social status. However the extent to which these factors cause MDD is unclear. Most of the available data comes from studies in developed countries, and these findings may not extrapolate to developing countries. Examining the relationship between MDD and socio economic status in China is likely to add to the debate because of the radical economic and social changes occurring in China over the last 30 years.We report results from 3,639 Chinese women with recurrent MDD and 3,800 controls. Highly significant odds ratios (ORs) were observed between MDD and full time employment (OR = 0.36, 95% CI = 0.25-0.46, logP = 78), social status (OR = 0.83, 95% CI = 0.77-0.87, logP = 13.3) and education attainment (OR = 0.90, 95% CI = 0.86-0.90, logP = 6.8). We found a monotonic relationship between increasing age and increasing levels of educational attainment. Those with only primary school education have significantly more episodes of MDD (mean 6.5, P-value = 0.009) and have a clinically more severe disorder, while those with higher educational attainment are likely to manifest more comorbid anxiety disorders.In China lower socioeconomic position is associated with increased rates of MDD, as it is elsewhere in the world. Significantly more episodes of MDD occur among those with lower educational attainment (rather than longer episodes of disease), consistent with the hypothesis that the lower socioeconomic position increases the likelihood of developing MDD. The phenomenology of MDD varies according to the degree of educational attainment: higher educational attainment not only appears to protect against MDD but alters its presentation, to a more anxious phenotype.