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| Intervention Group | Control Group | |
|---|---|---|
| Threatened preterm delivery | ||
| n (%) | 48 (8.36) | 128 (11.0) |
| n.s. | ||
| Mean gestational age ± SD | 28.1 ± 5.01 | 30.1 ± 4.15 |
| n.s. | ||
| Preterm delivery | ||
| n (%) | 20 (3.48) | 50 (4.31) |
| n.s. | ||
| Mean gestational age ± SD | 34.6 ± 4.15 | 36.2 ± 0.72 |
| n.s. | ||
Statistical analysis: chi-square test. n.s.: not significant.
