| 1 | Nulliparous, singleton, cephalic, ≥37-week gestation, in spontaneous labor | 2 | Nulliparous, singleton, cephalic, ≥37-week gestation, induced (2a) or CS before (2b) labor | 3 | Multiparous (excluding previous CS), singleton, cephalic, ≥37-week gestation, in spontaneous labor | 4 | Multiparous (excluding previous CS), singleton, cephalic, ≥37-week gestation, induced (4a) or CS before (4b) labor | 5 | All multiparous women with a previous CS, singleton, cephalic, ≥37-week gestation | 6 | All nulliparous with a single breech pregnancy | 7 | All multiparous with a single breech pregnancy (including previous CS) | 8 | All multiple pregnancies (including previous CS) | 9 | All women with a single pregnancy in transverse or oblique lie (including previous CS) | 10 | All preterm singleton, cephalic, <37-week gestation pregnancies (including previous CS) |
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