. 2004 Feb 7;328(7435):311. doi: 10.1136/bmj.37942.546076.44

Table 4.

Mode of delivery for subsequent pregnancy in relation to mode of delivery at index pregnancy in women who achieved term pregnancy. Values are numbers (percentages) unless stated otherwise

	Index pregnancy		Odds ratio (95% confidence interval)
Delivery for subsequent delivery	Instrumental vaginal delivery (n=54)	Caesarean section (n=54)	Unadjusted	Adjusted	Relative risk ratio (95% confidence interval)
Preferred vaginal delivery at 1 year after index delivery¹⁵	39 (72)	16 (30)	6.18 (2.68 to 14.2)^†	8.15 (3.07 to 21.67)^†	2.44 (1.57 to 3.80)^†
Planned vaginal delivery prior to subsequent delivery	47 (87)	18 (33)	13.4 (5.07 to 35.6)^†	15.55 (5.25 to 46.04)^†	2.61 (1.77 to 3.86)^†
Achieved vaginal delivery for subsequent delivery	42 (78)	17 (31)	7.62 (3.22 to 10.0)^†	9.50 (3.48 to 25.97)^†	2.47 (1.63 to 3.75)^†

Adjusted for parity, maternal age, social class, previous neonatal trauma, and previous prolonged hospital stay.

^†

P<0.05.