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Table 7 Spontaneous onset of labour for the recruited women who went into labour

From: OptiBIRTH: a cluster randomised trial of a complex intervention to increase vaginal birth after caesarean section

Mode of birth

Country

Intervention sites

Control sites

Risk ratio [95% CI]

Spontaneous onset of labour (% of women who went into labour)

Trial as a whole

445 (84.4)

281 (85.2)

0.99 [0.93, 1.05]

Germany

185 (77.1)

136 (79.5)

0.98 [0.88, 1.08]

Ireland

157 (86.3)

92 (89.3)

0.96 [0.87, 1.06]

Italy

103 (98.1)

53 (94.6)

1.04 [0.97, 1.11]