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Table 4 Relation between breastfeeding duration and allergy-related diseases

From: Duration of breastfeeding, age at introduction of complementary foods and allergy-related diseases: a prospective cohort study

 

Duration of any breastfeeding (N = 6796)

Odds ratioa (95% CI)

≥ 6 months (n = 5695)

<  6 months (n = 1101)

Disease and age

nb

n (%)

nb

n (%)

Crude

Adjustedc

Asthma

2 years (ever)

5135

319 (6.2)

964

83 (8.6)

0.70 (0.55, 0.90)

0.77 (0.59, 1.02)

6 years (current)

3134

142 (4.5)

566

32 (5.7)

0.79 (0.53, 1.17)

0.79 (0.51, 1.21)

Wheeze

2 years (ever)

4981

1288 (25.9)

939

288 (30.7)

0.79 (0.68, 0.92)

0.90 (0.76, 1.07)

6 years (current)

3098

312 (10.1)

565

76 (13.5)

0.72 (0.55, 0.94)

0.71 (0.53, 0.95)

ARC

2 years (ever)

4690

268 (5.7)

871

86 (9.9)

0.55 (0.43, 0.71)

0.65 (0.49, 0.86)

6 years (ever)

2913

348 (12.0)

520

76 (14.6)

0.79 (0.61, 1.04)

0.77 (0.58, 1.04)

Eczema

2 years (ever)

4994

853 (17.1)

931

145 (15.6)

1.12 (0.92, 1.35)

1.16 (0.94, 1.44)

6 years (current)

3087

436 (14.1)

556

69 (12.4)

1.16 (0.88, 1.52)

1.15 (0.86, 1.55)

6 years (ever)

3071

613 (20.0)

554

97 (17.5)

1.17 (0.93, 1.49)

1.18 (0.92, 1.53)

  1. a: For duration of any breastfeeding for six months or more versus less than six months
  2. b: The numbers vary because of missing data
  3. c: Adjusted for sex, maternal age, mean income, first degree relative with allergy, maternal smoking during the child’s first two years and birthweight