Table 4: Summary of ANCOVA models (p-values) to identify factors associated with functional disability (total SDS score).

- ANCOVA Model 1§ ANCOVA Model 2§ ANCOVA Model 3§
PDQ-D Total Score 0.000** n/a 0.000**
Country 0.003* 0.000** 0.001*
Recurrent Depressive Episode 0.013* 0.010* 0.021*
CGI-S Total Score 0.056 n/a n/a
Gender 0.109 0.066 0.068
Age 0.126 0.087 0.163
Education 0.160 0.222 0.132
Sick Leave 0.161 0.122 0.163
Antidepressant Treatment 0.212 0.283 0.167
Marital Status 0.829 0.760 0.815

§ANCOVA model 1 was built using factors associated with functional disability (total SDS score) in univariate analysis (p<0.05 in ANOVA). ANCOVA model 2 was then built without both PDQ-D and CGI-S. Finally, ANCOVA model 3 was built with PDQ-D, but without CGI-S. Summary of results are presented as p-values. PHQ-9 was an adjustment covariate in all 3 ANCOVA models. **p<0.001; *p<0.05