Demographic and obstetric characteristics of participants in the randomised trial and those completing the declined trial questionnaire
| Randomised trial n=88 women | Declined trial questionnaires n=127 women | |
| Recruiting site | ||
| Auckland City | 61 (69.3) | 104 (81.9) |
| Tauranga | 21 (23.9) | 10 (7.9) |
| Waikato | 6 (6.8) | 13 (10.2) |
| Maternal age | ||
| <30 years | 12 (13.6) | 17 (13.4) |
| 30–39 years | 64 (72.7) | 92 (72.4) |
| >40 years | 12 (13.6) | 18 (14.2) |
| Primary ethnicity | ||
| Māori | 3 (3.4) | 9 (7.1) |
| European | 71 (80.7) | 85 (66.9) |
| Pacific peoples | 2 (2.3) | 0 |
| Asian | 10 (11.4) | 30 (23.6) |
| Middle Eastern/Latin American/ African/other | 2 (2.3) | 3 (2.4) |
| CS care public/private* | ||
| Public (including midwifery lead maternity carer and hospital lead maternity carer) | 50 (56.7) | 59 (47.2) |
| Private obstetric lead maternity carer | 38 (43.2) | 66 (52.8) |
| Number of previous pregnancies >20 weeks† | ||
| 0 | 19 (21.6) | 38 (30.1) |
| 1 | 48 (54.5) | 57 (45.2) |
| ≥2 | 21 (23.9) | 31 (24.6) |
| Number of previous CS† | ||
| 0 | 25 (28.4) | 44 (34.9) |
| 1 | 49 (55.7) | 56 (44.4) |
| ≥2 | 14 (15.9) | 26 (20.6) |
| Primary indication for CS‡ | ||
| Placenta praevia and/or accreta | 6 (6.8) | 3 (2.4) |
| Breech or transverse lie | 7 (8.0) | 18 (14.2) |
| Previous CS | 58 (65.9) | 73 (57.5) |
| Twin pregnancy | 2 (2.3) | 1 (0.8) |
| SGA/FGR or other fetal concern | 3 (3.4) | 2 (1.6) |
| Maternal medical condition | 4 (4.5) | 12 (9.4) |
| Maternal request | 4 (4.5) | 8 (6.3) |
| Other | 4 (4.5) | 11 (8.7) |
*Two declined trial questionnaire participants did not respond to this question (n=125).
†One declined trial questionnaire participants did not respond to this question (n=126).
‡Primary indication for CS was identified by ranking each criteria for CS in the following order: placenta praevia, placenta accreta, breech or transverse lie, previous caesarean section, twin pregnancy, SGA/FGR fetus, maternal medical condition, maternal request, other fetal concern, other (including large baby, advanced maternal age, obstetric history, surgical history). Many participants had more than one indication for CS, most of which could be considered relative indications.
CS, caesarean section; FGR, fetal growth restriction; SGA, small-for-gestational-age.