Table 1.
Comparison of sociodemographic indicators between control and case groups of women with premature birth
| Variable | Control group (n=41) | Case group (n=41) | P value | |
|---|---|---|---|---|
| Education | School | 5 (12.2%) | 6 (14.6%) | 0.68 |
| College | 23 (56.1%) | 19 (46.3%) | ||
| University | 13 (31.7%) | 16 (39.0%) | ||
| Occupation | Housewife | 20 (48.8%) | 14 (34.1%) | 0.27 |
| Employer | 21 (51.2%) | 26 (63.4%) | ||
| Student | 0 (0.0%) | 1 (2.4%) | ||
| Income | High | 8 (19.5%) | 8 (19.5%) | 0.97 |
| Average | 20 (48.8%) | 21 (51.2%) | ||
| Low | 13 (31.7%) | 12 (29.3%) | ||
| Smoking | Non-smoker | 39 (95.1%) | 40 (97.6%) | 0.56 |
| Smoker | 2 (4.9%) | 1 (2.4%) | ||
| Passive smoker | Non-smoker | 35 (85.4%) | 38 (92.7%) | 0.29 |
| Smoker | 6 (14.6%) | 3 (7.3%) | ||
| Alcohol consumer | Non-consumer | 41 (100%) | 40 (97.6%) | 0.31 |
| Consumer | 0 (0.0%) | 1 (2.4%) | ||
| History of previous preterm birth | No | 39 (95.1%) | 32 (78.0%) | 0.02* |
| Yes | 2 (4.9%) | 9 (22.0%) | ||
| History of miscarriage | No | 32 (78.0%) | 35 (85.4%) | 0.39 |
| Yes | 9 (22.0%) | 6 (14.6%) | ||
| History of abortion | No | 37 (90.2%) | 39 (95.1%) | 0.40 |
| Yes | 4 (9.8%) | 2 (4.9%) | ||
| Retardation | No | 41 (100%) | 37 (90.8%) | 0.40* |
| Yes | 0 (0.0%) | 4 (9.8%) | ||
*
The Chi square test was used.