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%

Paz-Pascual et al. BMC Nursing 2008 7:5   doi:10.1186/1472-6955-7-5