From: Breastfeeding and childhood asthma: a six-year population-based cohort study
Duration of breastfeeding | Current asthma | Persistent wheezing | Persistent cough | Persistent phlegm | ||||
---|---|---|---|---|---|---|---|---|
 | Adjusted OR* | 95% CI | Adjusted OR* | 95% CI | Adjusted OR* | 95% CI | Adjusted OR* | 95% CI |
0–3 months | 1.44 | 0.78, 2.66 | 1.64 | 0.77, 3.52 | 1.72 | 0.94, 3.15 | 2.38 | 1.20, 4.70 |
4–6 months | 1.00 (reference) | 1.38 | 0.64, 2.97 | 1.35 | 0.73, 2.50 | 1.90 | 0.95, 3.79 | |
7–9 months | 1.16 | 0.65, 2.08 | 1.00 (reference) | 1.00 (reference) | 1.00 (reference) | |||
9–12 months | 1.72 | 0.97, 2.08 | 1.15 | 0.53, 2.50 | 1.21 | 0.65, 2.25 | 1.87 | 0.95, 3.71 |
> 12 months | 1.60 | 0.83, 2.08 | 2.26 | 1.07, 4.79 | 1.63 | 0.84, 3.16 | 2.88 | 1.42, 5.84 |
Change in breastfeeding | Â | Â | Â | Â | Â | Â | Â | Â |
From optimal to shorter per month †| 1.10 | 0.92, 1.32 | 1.12 | 0.99, 1.19 | 1.08 | 0.98, 1.19 | 1.11 | 1.00, 1.24 |
From optimal to longer per month ‡ | 1.03 | 1.00, 1.05 | 1.05 | 1.03, 1.08 | 1.04 | 1.02, 1.06 | 1.04 | 1.01, 1.06 |