Table 3

Scores of the severity index of depression (PHQ-9 questionnaire)



PHQ-9 scores
Fulfilling criteria for
Overall



Gender
N
Mean
SD
Major Depression
Minor Depression
Depressive Disorder

male
344
15.33
4.76
38 (11.0%)
27 (7.8 %)
65 (18.9%)
female
668
15.95
4.63
84 (12.6 %)
47 (7.1 %)
131 (19.6%)




122 (12.0%)
74 (7.3%)
196 (19.4%)

* p < 0.05; **p < 0.01; PHQ-9 scores compared by ANCOVA (adjusted for age, disease duration and comorbidities); severity categories by means of Chi-square-test

Rosemann et al. Journal of Orthopaedic Surgery and Research 2007 2:12   doi:10.1186/1749-799X-2-12