Table 1.
Demographic and clinical characteristics by mental health condition.
| SSD | DEP | Test parameter (df) | p | |
|---|---|---|---|---|
| N = 29 | N = 29 | |||
| Age (years, mean ± SD; range) | 29.8 ± 12.7; 19–64 | 25.6 ± 6.2; 19–51 | t = 1.6 (56) | 0.11 |
| Highest educational level (n, %) | χ2 = 4.7 (2) | 0.10 | ||
| Medium-track secondary school | 4 (13.8%) | – | ||
| Advanced technical college entrance qualification | 4 (13.8%) | 3 (10.3%) | ||
| University entrance level | 21 (72.4%) | 26 (89.7%) | ||
| Monthly income (in Euro)a (n, %) | χ2 = 2.2 (2) | 0.33 | ||
| < 1250 | 20 (69.0%) | 23 (82.1%) | ||
| 1250–2999 | 6 (20.7%) | 2 (7.2%) | ||
| 3000–5000 | 3 (10.3%) | 3 (10.7%) | ||
| BMI (kg/m2, mean ± SD; range) | 22.3 ± 3.1; 17.3–29.1 | 22.3 ± 2.9; 18.4–29.0 | t = 0.1 (56) | 0.94 |
| PHQ-15 (mean ± SD) | 9.4 ± 3.0 | 8.0 ± 3.9 | t = 1.6 (56) | 0.11 |
| PHQ-9 (mean ± SD) | 5.9 ± 3.0 | 15.9 ± 4.2 | t = − 10.4 (56) | < 0.001 |
| Intake of pain medication (n, %) | 8 (27.6%) | 1 (3.4%) | χ2 = 6.4 (1) | 0.011 |
| Intake of antidepressant medication (n, %) | 1 (3.4%) | 4 (13.8%) | χ2 = 2.0 (1) | 0.16 |
| Duration of somatic complaintsa (n, %) | χ2 = 11.4 (3) | 0.010 | ||
| < 1 year | – | 7 (24.1%) | ||
| 1 year | 7 (24.1%) | 6 (20.7%) | ||
| > 1 year | 22 (75.9%) | 13 (44.8%) | ||
| Life-long | – | 2 (6.9%) |
DEP depressive disorders, SSD somatic symptom disorder, BMI Body Mass Index, PHQ-15 Patient Health Questionnaire, somatic symptoms subscale, excluding two items from the PHQ-9 scale, PHQ-9 Patient Health Questionnaire, depressive symptoms subscale. Scores ≥ 5, ≥ 10, and ≥ 15 indicate low, medium, and high symptom severity on the (original) PHQ-15 and PHQ-9 scales.
ainformation unavailable for one individual in the DEP group. Significant estimates (p < 0.05) are marked in bold.