Table 1.
Characteristics of parturients in the two groups.
|
Groups |
||||
|---|---|---|---|---|
| Trial of labor | Non-trial of labor | t/χ2 | P | |
| Number of women studied | 170 | 487 | ||
| Maternal age (mean ± SD, years) | 31.14 ± 3.81 | 31.16 ± 3.60 | 0.04 | 0.97 |
| Maternal stature (mean ± SD, m) | 1.59 ± 0.05 | 1.60 ± 0.05 | 4.12 | <0.001 |
| Maternal weight before pregnancy (mean ± SD, kg) | 51.88 ± 5.96 | 53.80 ± 8.48 | 2.54 | 0.01 |
| Maternal weight at delivery (mean ± SD, kg) | 64.85 ± 7.29 | 67.12 ± 7.88 | 3.09 | <0.001 |
| BMI before pregnancy (mean ± SD, kg/m2) | 20.63 ± 2.20 | 20.88 ± 3.10 | 0.92 | 0.36 |
| BMI at delivery (mean ± SD, kg/m2) | 25.77 ± 2.54 | 26.06 ± 2.70 | 1.12 | 0.26 |
| Gravidity | 2.88 ± 1.04 | 2.72 ±0.91 | 1.68 | 0.09 |
| Parity | 1.02 ± 0.16 | 1.02 ± 0.14 | −0.31 | 0.76 |
| Gestational weeks | 38.90 ± 1.02 | 39.02 ± 1.38 | 1.04 | 0.30 |
| Maternal abdominal circle | 97.05 ± 7.09 | 98.59 ± 5.12 | 2.84 | 0.01 |
| Uterine height | 34.05 ± 5.65 | 33.79 ± 1.63 | −0.85 | 0.39 |
| Bishop score | ||||
| At admission | 6.07 ± 2.30 | 5.19 ± 1.97 | 4.425 | <0.001 |
| Entering the delivery room | 7.91 ± 1.43 | 7.82 ± 1.20 | 0.736 | 0.46 |
| Birth weight | 3200 ± 340 | 3250 ± 340 | 1.62 | 0.11 |
| Days of hospital stay (days) | 3.76 ± 1.41 | 4.09 ± 1.63 | 2.17 | 0.03 |
| Duration interval of two deliveries (years)* | 5 (2, 10) | 5 (2, 11) | 1.24 | 0.22 |
*Data are median (5th, 95th percentiles). SD: standard deviation; BMI: body mass index.