The impact of family socioeconomic status on depression in Chinese adolescents: A comparison of life course models

Low socioeconomic status (SES) is a well-recognized risk factor for depression. However, the relationship between the timing of exposure to disadvantaged SES in childhood and depression in adolescence remains to be explored. We examined the differential influence of SES in early childhood, late childhood and adolescence on adolescent depression by modeling life course models. We used longitudinal data from the China Family Panel Studies (N = 2245). SES was measured using average household income (objective SES) and maternal subjective SES and grouped into three time points: 5–8 years, 9–12 years, and 13–16 years of age. The main outcome was depression at 13–16 years of age. Structured linear regression analysis was used to predict depression by low SES over the three time periods. A partial F test was used to compare the nested life course models to the saturated model. Among objective SES permutations, approximately 24.63 % of the adolescents had low SES in all periods, and 73.63 % had low SES in at least one period. Among subjective SES permutations, approximately 5.48 % of the adolescents had low SES in all periods, and 54.65 % had low SES in at least one period. Regardless of objective SES or subjective SES, the accumulation of risk (relaxed) model was the best-fit model. In this model, chronic low SES exposure in late childhood was the best predictor. We suggest that interventions targeting the late childhood period may have a practical effect on reducing depression in adolescents.