Table 2. Comparison of baseline characteristics of the two groups ‘fast’ and ‘slow’ improversa.
| Fast improvers | Slow improvers | b-coefficient | 95% CI (b-coefficients) | p-value (Wald) | Odds ratio | 95% CI (odds ratio) | ||
|---|---|---|---|---|---|---|---|---|
| Socio-demographic characteristics | ||||||||
| Intercept | 1.085 | -1.956–4.126 | 0.484 | 2.96 | 0.141–61.943 | |||
| Age (in years), mean (SD) | 52.2 (15.1) | 52.2 (13.6) | -0.001 | -0.028–0.026 | 0.952 | 0.999 | 0.973–1.027 | |
| Sex | male | 40 (28.6) | 18 (20.5) | -0.648 | -1.506–0.21 | 0.139 | 0.523 | 0.222–1.234 |
| female (reference) | 100 (71.4) | 70 (79.5) | ||||||
| Education | higher education entrance qualification | 24 (17.3) | 25 (28.7) | 0.414 | -0.502–1.329 | 0.376 | 1.512 | 0.606–3.778 |
| no higher education entrance qualification (reference) | 115 (82.7) | 62 (71.3) | ||||||
| Civil status | married | 80 (57.1) | 43 (48.9) | 0.089 | -0.627–0.805 | 0.807 | 1.093 | 0.534–2.237 |
| not married (reference) | 60 (42.9) | 45 (51.1) | ||||||
| Clinical characteristics | ||||||||
| Depression, mean PHQ-9 (SD) | 17.2 (3.6) | 16.9 (3.6) | -0.043 | -0.149–0.063 | 0.429 | 0.958 | 0.861–1.066 | |
| Duration of current depressive episode (in weeks), mean (SD) | 19.1 (23.7) | 17.8 (23.4) | 0.001 | -0.016–0.018 | 0.896 | 1.001 | 0.984–1.019 | |
| Therapy | maintenance therapyb | 105 (75) | 70 (79.5) | 0.029 | -0.816–0.873 | 0.947 | 1.029 | 0.442–2.394 |
| treatment starter (reference) | 35 (25) | 18 (20.5) | ||||||
| History of suicide attempt(s) | yes | 19 (13.7) | 25 (28.4) | 1.022 | 0.115–1.928 | 0.027 | 2.778 | 1.122–6.876 |
| no (reference) | 120 (86.3) | 63 (71.6) | ||||||
| Health related quality of life, mean EQ-5D (SD) | 65 (1.9) | 57.2 (20) | -0.027 | -0.045 –-0.009 | 0.003 | 0.973 | 0.956–0.991 | |
| Number of physical comorbid conditionsc | 3.06 (1.9) | 3.6 (2.8) | 0.166 | 0.001–0.331 | 0.049 | 1.181 | 1.001–1.393 | |
a Based on results of hierarchical binary logistic regression model
b Defined as patients receiving depression treatment (depression diagnosis known by the GP before starting the trial)
c Number of physical comorbid conditions were assessed by counting the documented diagnoses of different diagnostic groups (excluding all psychiatric diagnoses) in the patient records.