Total CS rate (%) | Contrib. rate (%) | Size of group (%) | ||||||
---|---|---|---|---|---|---|---|---|
Ten-Groups | N | Referred | Self-refer. | P* | Referred | Self-refer. | Referred | Self-refer. |
1. Nulliparous, single ceph., > = 37 w, sp. labour | 4,001 | 58.4 | 20.3 | < .01 | 11.7 | 4.0 | 20.0 | 19.7 |
2. Nulliparous, single ceph., > = 37 w, induced/CS | 2,877 | 32.9 | 24.5 | < .01 | 4.2 | 3.6 | 12.8 | 14.6 |
3. Multiparous, single, ceph., > = 37 w, sp. labour | 5,006 | 41.4 | 8.7 | < .01 | 6.3 | 2.3 | 15.3 | 26.0 |
4. Multiparous, single, ceph., > = 37 w, induced/CS | 2,079 | 32.5 | 15.7 | < .01 | 2.2 | 1.7 | 6.8 | 10.7 |
5. Previous CS, single ceph., > = 37 w | 3,556 | 82.6 | 69.7 | < .01 | 19.3 | 10.8 | 23.4 | 15.5 |
6. Nulliparous breeches | 135 | 74.4 | 65.9 | .33 | 0.8 | 0.4 | 1.1 | 0.6 |
7. Multiparous breeches (incl. previous CS) | 205 | 57.7 | 35.2 | < .01 | 0.8 | 0.3 | 1.3 | 0.8 |
8. Multiple pregnancies (incl. previous CS) | 589 | 46.4 | 36.8 | .04 | 1.9 | 0.9 | 4.2 | 2.5 |
9. Abnormal lies (incl. previous CS) | 60 | 93.1 | 85.7 | .64 | 0.7 | 0.1 | 0.7 | 0.1 |
10. Single, ceph., < = 36 w (incl. previous CS) | 2,154 | 49.5 | 30.3 | < .01 | 7.1 | 2.8 | 14.3 | 9.4 |
Total | 20,662 | 55.0 | 26.9 | < .001 | 55.0 | 26.9 | 99.9 | 99.9 |