Table 2.
Socio-demographic and clinical characteristics of the three samples
| Sample 1 | Sample 2 | Sample 3 | ||
|---|---|---|---|---|
| Cross-sectional sample – first half | Cross-sectional sample – second half | Significance of difference between sample 1 & 2 (χ 2 test or t-test) |
Longitudinal sample | |
| Sample size | n = 251 | n = 261 | n = 364 | |
| Sex (% male) | 61% | 55% | 0.185 | 59% |
| Age (in years) | 38.3 (± 11.5) | 39.9 (± 11.6) | 0.132 | 39.0 (± 11.7) |
| Family status | 0.862 | |||
| Single | 73% | 69% | 72% | |
| Married | 14% | 18% | 15% | |
| Divorced/separated | 11% | 12% | 12% | |
| Widowed | 1% | 1% | 1% | |
| Education | 0.329 | |||
| None | 5% | 8% | 5% | |
| Special education | 1% | 2% | 1% | |
| Intermediate | 53% | 58% | 57% | |
| Technical high school | 2% | 3% | 3% | |
| University entrance qualification | 33% | 23% | 27% | |
| Unknown | 6% | 7% | 7% | |
| Vocational status | 0.612 | |||
| No work | 38% | 34% | 37% | |
| Sheltered work | 11% | 11% | 12% | |
| Normal work status | 22% | 20% | 20% | |
| Retired worker | 21% | 30% | 25% | |
| Other | 9% | 5% | 7% | |
| Age at onset of illness | 28.2 (± 9.2) | 29.0 (± 10.1) | 0.346 | 28.3 (± 9.5) |
| Duration of illness (in years) | 9.5 (± 9.2) | 10.6 (± 9.6) | 0.229 | 10.1 (± 9.5) |
| Global Assessment of Functioning (GAF) | 48.6 (± 15.1) range 15–90 |
48.3 (± 16.1) range 6–91 |
0.855 | 55.6 (± 14.4) range 22–90 |