Table 3.
Group* | Number of CS in group | Number of women in group | Group size (%) | Group CS rate (%) | Absolute group contribution to overall CS rate (%) | Relative contribution of group to overall CS rate (%) | |
2a | Nulliparous, single cephalic, S37 weeks, induced | 11 | 32 | 1.1 | 34.4 | 0.4 | 1.0 |
2b | Nulliparous, single cephalic, S37 weeks, CS before labour | 24 | 24 | 0.8 | 100.0 | 0.8 | 2.3 |
4a | Multiparous (excluding previous CS), single cephalic, S37 weeks, induced | 1 | 21 | 0.7 | 4.8 | 0.0 | 0.1 |
4b | Multiparous (excluding previous CS), single cephalic, S37 weeks, CS before labour | 24 | 24 | 0.8 | 100.0 | 0.8 | 2.3 |
5.1 | One previous CS, single cephalic, S37 weeks | 272 | 327 | 10.9 | 83.2 | 9.0 | 25.7 |
5.2 | Two or more previous CS, single cephalic, S37 weeks | 132 | 136 | 4.5 | 97.1 | 4.4 | 12.5 |
*Birth weight ≥2500 g was used as proxy for gestational age >37 weeks.
CS, caesarean section.