From: Breastfeeding and childhood asthma: a six-year population-based cohort study
Duration of breastfeeding | Current asthma | Persistent wheezing | Persistent cough | Persistent phlegm | ||||
---|---|---|---|---|---|---|---|---|
 | n * | Prevalence (%) | n * | Prevalence (%) | n * | Prevalence (%) | n * | Prevalence (%) |
0–3 months (N = 346) | 27 | 7.8 | 17 | 4.9 | 27 | 7.8 | 25 | 7.3 |
4–6 months (N = 385) | 20 | 5.2 | 14 | 3.6 | 22 | 5.7 | 20 | 5.2 |
7–9 months (N = 528) | 32 | 6.0 | 14 | 2.7 | 22 | 4.2 | 15 | 2.8 |
10–12 months (N = 434) | 37 | 8.5 | 13 | 3.0 | 21 | 4.8 | 21 | 4.8 |
> 12 months (N = 240) | 21 | 8.8 | 16 | 6.7 | 17 | 7.1 | 19 | 7.9 |