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Table 1 Baseline characteristics of the study participants (N = 42)
| Intervention | Control | p-value | |||
|---|---|---|---|---|---|
| (n = 22) | (n = 20) | ||||
| n | % | n | % | ||
| Age (years) | 28.8 | [3.8] | 29.3 | [3.7] | 0.714 |
| Gestational weeks | 38.8 | [0.4] | 38.8 | [0.5] | 0.955 |
| Living with partner | 22 | (100) | 20 | (100) | 1.000 |
| Married | 22 | (100) | 20 | (100) | 1.000 |
| Education ≥13 years | 18 | (81.8) | 17 | (85.0) | 1.000 |
| Due date confirmed by USG ≤ 12 gw | 21 | (95.5) | 19 | (95.0) | 1.000 |
| Fetal gender (boy) | 12 | (54.5) | 13 | (65.0) | 0.491 |
| Had contact with children | 5 | (22.7) | 4 | (20.0) | 1.000 |
| Taking medicine | 6 | (27.3) | 5 | (25.0) | 0.867 |
| Oral injury | 1 | (4.5) | 0 | 0.0 | 1.000 |
| Oxytocin receptor polymorphisms | |||||
| rs53576 (GG) | 2 | (9.5) | 2 | (11.8) | 1.000 |
| rs2254298 (GG) | 10 | (47.6) | 8 | (47.0) | 0.976 |
