Table 1 Differences between participants and non-participants in the study based on register data.
From: Validity of the diagnosis of a single depressive episode in a case register
| Participants in the interview | Non-participants in the interview | P | |
|---|---|---|---|
| Number | 399 | 1087 | |
| Median age at first contact (quartiles) | 38.2 (29.5–51.9) | 39.6 (29.3–53.1) | 0.7* |
| Gender | |||
| Men (%) | 140 (35.1) | 417 (38.4) | 0.2** |
| Women (%) | 259 (64.9) | 670 (61.6) | |
| Type of depression (ICD-10, %) | |||
| Unspecified | 43 (10.8) | 128 (11.8) | |
| Mild | 65 (16.3) | 195 (17.9) | 0.8** |
| Moderate | 204 (51.1) | 525 (48.3) | |
| Severe | 87 (21.8) | 239 (22.0) | |
| Type of contact (%) | |||
| Admission | 232 (58.1) | 558 (51.3) | 0.02** |
| Out-patient | 167 (41.9) | 529 (48.7) | |
| Duration of contact (quartiles) | |||
| Admission in days | 21.5 (6.0–45.0) | 16.0 (4.0–41.0) | 0.09* |
| Out-patient in days | 70.0 (19.0–188.0) | 88.0 (29.5–210.5) | 0.1* |