. 2019 Mar 15;9(3):e025051. doi: 10.1136/bmjopen-2018-025051

Table 4.

Mode of delivery and body mass index at age 5 years

BMI category (normal BMI–base outcome)	Cases	RRR (95% CI)	P value	AdjRRR (95% CI)*	P value
BMI category (normal BMI–base outcome)	n	RRR (95% CI)	P value	AdjRRR (95% CI)*	P value
Thin
Unassisted vaginal	13	Reference		Reference
Operative vaginal	18	1.45 (0.69 to 3.02)	0.324	1.82 (0.84 to 3.96)	0.131
Prelabour LSCS	3	0.68 (0.19 to 2.44)	0.553	0.46 (0.14 to 1.56)	0.212
LSCS in labour	5	0.86 (0.30 to 2.47)	0.777	1.06 (0.36 to 3.09)	0.915
Overweight or obese
Unassisted vaginal	36	Reference		Reference
Operative vaginal	52	1.51 (0.95 to 2.40)	0.079	1.64 (1.00 to 2.67)	0.05
Prelabour LSCS	17	1.39 (0.74 to 2.60)	0.305	1.37 (0.69 to 2.69)	0.368
LSCS in labour	26	1.61 (0.93 to 2.80)	0.09	1.69 (0.92 to 3.08)	0.09

N for adjusted model=856. Multinomial logistic regression.

*Adjusted for maternal age, education, ethnicity, marital status, infant sex, maternal smoking during pregnancy, maternal BMI at the first antenatal visit, gestational age (at delivery), birth weight and pre-eclampsia.

Adj, adjusted; BMI, body mass index; LSCS, lower segment caesarean section; RRR, relative risk ratio.