Table 1.
Descriptive statistics and group comparisons
| Endometriosis | Controls | Group differences | |
| (n=505) | (n=505) | ||
| Age | |||
| Mean years (SD) | 37.7 (7.3) | 37.2 (9.1) | p=0.344* |
| Nationality | |||
| Swiss | n=211 (42.2%) | n=285 (57.3%) | p<0.001† |
| German | n=244 (48.8%) | n=161 (32.4%) | |
| Others | n=45 (9.0%) | n=51 (10.3%) | |
| Marital status | |||
| Married/ Cohabiting |
n=420 (83.3%) | n=397 (79.4%) | p=0.109† |
| Single | n=84 (16.7%) | n=103 (20.6%) | |
| Pregnancies >24 weeks | |||
| 0 | n=331 (70.6%) | n=245 (50.9%) | p<0.001† |
| 1 | n=83 (17.7%) | n=80 (16.6%) | |
| ≥2 | n=55 (11.7%) | n=156 (32.4%) | |
| Education level‡ | |||
| Low | n=71 (14.4%) | n=74 (14.7%) | p=0.990† |
| Medium | n=245 (49.6%) | n=249 (49.4%) | |
| Paid occupation | |||
| High | n=178 (36.0%) | n=181 (35.9%) | p=0.016† |
| Full-time | n=248 (49.8%) | n=206 (41.8%) | |
| Part-time | n=176 (35.3%) | n=186 (37.7%) | |
| None | n=74 (14.9%) | n=101 (20.5%) | |
| Occupation among mothers§ only | |||
| Full-time | n=30 (22.1%) | n=57 (23.9%) | p=0.120† |
| Part-time | n=68 (50.0%) | n=136 (57.1%) | |
| None | n=38 (27.9%) | n=45 (18.9%) | |
*Independent samples t-test.
†Pearson χ2-test.
‡Scale: Low,‘no formal education/lower school education’; medium, higher school education/apprenticeship; high, university degree.
§Women with at least one pregnancy >24 weeks.