Table 2

Summary of depression variables, unadjusted, in intervention and comparison factories

CES-D ScoresComparison mean (SD)Intervention mean (SD)p Value for difference†
Continuous outcomes
Full depression scale (0–60)14.7 (11.6)10.6 (9.3)0.007**
Depression subscales
 Depressed affect/mood (0–21)4.3 (4.7)3.0 (3.5)0.031*
 Somatic symptoms (0–21)5.4 (4.5)4.1 (3.8)0.023*
 Lack of positive affect (0–12)4.0 (2.7)2.9 (2.7)0.004**
 Interpersonal relations (0–6)1.0 (1.5)0.6 (1.1)0.077
n (%)n (%)
Dichotomous with cut-off
 Depression score >1642 (40)23 (23)0.010*
 Depression score >2030 (29)17 (17)0.053
  • *p<0.05; **p<0.01.

  • †Tests of difference conducted using t test or test of proportions where appropriate.

  • CES-D, Center for Epidemiologic Studies-Depression Scale.