|
Robson group, N (%)
|
9981
|
135
|
161
|
198
|
4197
|
2368
|
2550
|
372
|
|
1. Nulliparous, single cephalic term pregnancy in spontaneous labor
|
22.0%
|
28.1%
|
28.6%
|
34.8%
|
15.7%
|
28.9%
|
26.2%
|
9.1%
|
|
2. Nulliparous, single cephalic term pregnancy with labor induced or cesarean before labor
|
20.6%
|
0.7%
|
1.2%
|
5.6%
|
23.5%
|
17.9%
|
22.7%
|
14.2%
|
|
3. Multiparous without a previous uterine scar, single cephalic term pregnancy in spontaneous labor
|
6.7%
|
29.6%
|
30.4%
|
23.2%
|
4.9%
|
8.1%
|
4.9%
|
3.2%
|
|
4. Multiparous without a previous uterine scar, single cephalic term pregnancy with labor induced or cesarean before labor
|
8.2%
|
1.5%
|
5.6%
|
3.0%
|
9.1%
|
8.4%
|
7.1%
|
11.6%
|
|
5. Multiparous with a previous uterine scar, single cephalic term pregnancy
|
23.2%
|
7.4%
|
8.1%
|
10.1%
|
25.7%
|
20.1%
|
24.7%
|
22.8%
|
|
6. Nulliparous with a single breech pregnancy
|
2.5%
|
0.7%
|
6.2%
|
2.0%
|
2.5%
|
3.0%
|
2.2%
|
1.6%
|
|
7. Multiparous with a single breech pregnancy
|
2.0%
|
4.4%
|
6.8%
|
5.6%
|
2.7%
|
1.2%
|
0.7%
|
3.0%
|
|
8. Multiple pregnancy
|
1.6%
|
8.9%
|
3.7%
|
5.6%
|
1.3%
|
1.8%
|
0.9%
|
1.6%
|
|
9. Single pregnancy with a transverse or oblique lie
|
2.6%
|
5.9%
|
1.2%
|
3.0%
|
3.8%
|
1.5%
|
1.1%
|
4.6%
|
|
10. Single cephalic preterm pregnancy
|
10.6%
|
12.6%
|
8.1%
|
7.1%
|
10.7%
|
9.1%
|
9.4%
|
28.2%
|
