. 2012 Nov 16;12:179. doi: 10.1186/1471-2431-12-179

Table 2.

Association between mode of delivery and asthma and allergy outcomes at age 8–9 years

Outcomes	Total Population	Prevalence (95% CI)		Odds ratios by mode of delivery (Born by C/S Vs vaginally)
		Born vaginally	Born by C/S	Unadjusted OR (95% CI), p-value	Adjusted OR† (95% CI), p-value
Whole sample*	n=2216	n= 1500	n= 695
Ever Wheeze	25.0	23.1	29.5	1.38 (1.13-1.69),	1.36 (1.07- 1.71)
Ever Wheeze	(23.2-26.8)	(21.0-25.2)	(26.1-32.9)	1.38 (1.13-1.69),	1.36 (1.07- 1.71)
Current Wheeze	8.6	7.5	11.1	1.53 (1.13-2.08)	1.23 (0.87- 1.74)
Current Wheeze	(7.4-9.8)	(6.2-8.8)	(8.8-13.4)	1.53 (1.13-2.08)	1.23 (0.87- 1.74)
Ever Asthma	17.6	15.9	21.3	1.44 (1.14-1.80)	1.41 (1.09- 1.83)
Ever Asthma	(16.0-19.2)	(14.0-17.8)	(18.3-24.3)	1.44 (1.14-1.80)	1.41 (1.09- 1.83)
Active Asthma	5.7	5.1	7.2	1.44 (1.00-2.08)	1.23 (0.81- 1.88)
Active Asthma	(4.7-6.7)	(4.0-6.2)	(5.3-9.1)	1.44 (1.00-2.08)	1.23 (0.81- 1.88)
Sub-group*	n=746	n= 507	n= 354
Atopic Sensitization	15.1	13.7	18.5	1.47 (0.98- 2.20)	1.67 (1.08- 2.60)
Atopic Sensitization	(12.6-17.6)	(10.8-16.6)	(13.7-23.3)	1.47 (0.98- 2.20)	1.67 (1.08- 2.60)

† Adjusted for sex, country of birth, district, urban/rural residence, birth order, parental level of education, parental smoking at home, mother smoking during pregnancy, exclusive breastfeeding for more than 2 months, birth weight <2500 gr., nursery attendance in the first year of life, bedroom sharing with older sibling, and family history of allergy. * Numbers reflect missing values on some variables.