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Table 2 Association between mode of delivery and asthma and allergy outcomes at age 8–9 years

From: Asthma and atopy in children born by caesarean section: effect modification by family history of allergies – a population based cross-sectional study

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)

(23.2-26.8)

(21.0-25.2)

(26.1-32.9)

Current Wheeze

8.6

7.5

11.1

1.53 (1.13-2.08)

1.23 (0.87- 1.74)

(7.4-9.8)

(6.2-8.8)

(8.8-13.4)

Ever Asthma

17.6

15.9

21.3

1.44 (1.14-1.80)

1.41 (1.09- 1.83)

(16.0-19.2)

(14.0-17.8)

(18.3-24.3)

Active Asthma

5.7

5.1

7.2

1.44 (1.00-2.08)

1.23 (0.81- 1.88)

(4.7-6.7)

(4.0-6.2)

(5.3-9.1)

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)

(12.6-17.6)

(10.8-16.6)

(13.7-23.3)

  1. † 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.