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Demographic characteristics.
| Variable | Number of OR (mean ± SD) | Percentage % |
|---|---|---|
| Age | 31.80 ± 3.27 | |
| Prepregnancy body mass index (BMI) | 24.67 ± 2.46 | |
| Gravidity | ||
| Primigravida | 11 | 23.4 |
| Multigravida | 36 | 76.6 |
| Duration of menstrual cycle/day | 29.68 ± 3.10 | |
| Duration of menstrual period/day | 6.46 ± 1.12 | |
| Spontaneous conception | 59.57% | 28 |
| Using assisted reproductive technology | 40.43% | 19 |
Values are given as mean ± SD or number (percentage %).
