| Attribute | Cases Mean, IQR (Range) | Controls Mean, IQR (Range) |
| Demographic Attributes | ||
| Woman’s marriage age (yrs)+ | 18, 16 - 19 (12 - 25) | 19, 18 - 20 (12 - 26) |
| 0.003 | ||
| Woman’s age at parity of OF (yrs)+ | 22, 18 - 26 (8 - 43) | 23, 19 - 41 (16 - 41) |
| 0.20 | ||
| Father’s marriage age (yrs)+ | 26, 22 - 29 (17 - 52) | 26, 22 - 28 (15 - 49) |
| 0.76 | ||
| Father’s age at parity of OF (yrs)+ | 31, 26 - 38 (18 - 66) | 30, 26 - 36 (16 - 56) |
| 0.17 | ||
| Yrs father older at marriage+ | 9, 4 - 10 (−2 - 36) | 7, 4 - 9 (−5 - 33) |
| 0.032 | ||
| Marriage status at parity of OF: Number (%) | ||
| Single | 20 (11%) | 13 (7.3%) |
| Divorced | 2 (1.1%) | 2 (1.1%) |
| Estranged | 5 (3.1%) | 3 (1.7%) |
| Widowed | 1 (0.6%) | 0 (0%) |
| Married | 147 (84%) | 159 (90%) |
| Total | 175 (100%) | 177 (100%) |
| Woman’s level of education at enrollment: Number (%) | 116 (66%) | |
| None | 68 (39%) | 21 (12%) |
| Primary | 77 (44%) | 36 (21%) |
| Secondary | 30 (17%) | |
| University | 0 (0%) | 2 (1.1%) |
| Total | 175 (100%) | 175 (100%) |