Table 2 Initial simplified Bishop score and method of induction among women undergoing labor induction in China
| Â | Nulliparas | Multiparas |
|---|---|---|
Proportion of women, %a, n = 790 253 | Proportion of women, %a, n = 473 866 | |
Initial cervical dilation (cm) | ||
 Closed | 66.6 | 70.9 |
 1–2 | 32.2 | 28.0 |
 3–4 | 1.2 | 1.1 |
 5–6 | 0 | 0 |
Initial cervical effacement (%) | ||
 0–30 | 25.1 | 37.6 |
 40–50 | 12.6 | 13.5 |
 60–70 | 19.2 | 13.2 |
 80–100 | 43.1 | 35.7 |
Initial station | ||
  − 3 | 42.1 | 54.8 |
  − 2 | 44.4 | 32.9 |
  − 1 or 0 | 10.4 | 9.0 |
  + 1 or + 2 | 3.1 | 3.3 |
Simplified Bishop score ≥ 5 | 26.2 | 23.4 |
Method of induction | ||
 Artificial rupture of membranes | 25.3 | 18.9 |
 Prostaglandins | 9.5 | 9.9 |
 Mechanical | 8.9 | 6.9 |
 Oxytocin | 79.9 | 76.5 |