Table 2 Hypothesised differences between antenatal education exposure groups for whose detection the EMA study has a statistical power greater than 80%
N = 616 | Group A (0 sessions) n = 45 (7.3) | Group B (1–4 sessions) n = 62 (10.1) | Group C (≥ 5 sessions) n = 509 (82.6) |
|---|---|---|---|
Visiting hospital for false labour | 31% | 22% | 14% |
Anxiety: HAD scale | 55% | 48% | 35% |
Mean duration of dilation. (SD 201 min) | 470 | 425 | 375 |
Mean duration of expulsion period (SD 68 min) | 100 | 85 | 70 |
Dilation in epidural anaesthesia. (SD 1.28 cm.) | 3.4 | 3.7 | 4 |
Anaesthesia administered in latent birth stage | 39% | 30% | 20% |
Instrumental deliveries | 30% | 20% | 13% |
Episiotomy in normal births | 55% | 48% | 35% |
Breastfeeding at one and a half months | 55% | 64% | 75% |
Breastfeeding at 3 months | 48% | 58% | 69% |
Breastfeeding at 6 months | 24% | 35% | 47% |