Table 3.
Baseline characteristics of the intervention and control group given at patient level
| Variables | Intervention group | Control group | p value |
|---|---|---|---|
| Patients | n = 198 b | n = 246 c | |
| Sociodemographic characteristics | |||
| Mean (SD) age (years) | 53.4 (15.6) | 55.0 (16) | 0.294 |
| Female | 128 (64.7) | 179 (72.8) | 0.066 |
| Born in the Netherlands | 185 (95.4), n = 194 | 233 (95.5), n = 244 | 0.948 |
| Married or living together | 133 (68.6), n = 194 | 161 (65.7), n = 245 | 0.529 |
| In paid employment | 77 (42.3), n = 182 | 83 (34.7), n = 239 | 0.112 |
| Level of education | n = 196 | n = 244 | 0.647 |
| Low | 102 (52.0) | 123 (50.4) | |
| Medium | 48 (24.5) | 69 (28.3) | |
| High | 46 (23.5) | 52 (21.3) | |
| Clinical characteristics | |||
| Number of chronic medical conditionsa (range: 0–28), mean (SD) | 3.1 (2.1) | 3.0 (2.2) | 0.723 |
| 4DSQ distress score (range: 0–32), mean (SD) | 12.4 (8.1), n = 193 | 11.9 (7.1), n = 240 | 0.431 |
| 4DSQ depression score (range: 0–12), mean (SD) | 1.8 (2.8), n = 194 | 1.6 (2.7), n = 239 | 0.480 |
| 4DSQ anxiety score (range: 0–24), mean (SD) | 3.2 (4.0), n = 194 | 2.8 (3.5), n = 238 | 0.273 |
| 4DSQ somatisation score (range: 0–32), mean (SD) | 8.5 (5.9), n = 186 | 8.3 (5.9), n = 228 | 0.760 |
Values are numbers (percentages) unless stated otherwise.
4DSQ Four-Dimensional Symptom Questionnaire.
aChronic medical condition was measured with the Dutch Central Bureau of Statistics (CBS) list.
b n = 198 unless stated otherwise.
c n = 246 unless stated otherwise.