Table 3.
Association of exclusive breastmilk feeding duration with risk of asthma by age.
| 3–4 y | 5–6 y | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Duration | N | Asthma | Prevalence | aOR * | 95% CI | N | Asthma | Prevalence | aOR * | 95% CI |
| Never | 1075 | 188 | 17.49 | 1 | Ref. | 1065 | 170 | 15.96 | 1 | Ref. |
| 0–2 m | 934 | 100 | 10.71 | 0.54 | 0.37–0.79 | 758 | 115 | 15.17 | 1.16 | 0.85–1.59 |
| 2–4 m | 356 | 33 | 9.27 | 0.54 | 0.3–0.96 | 359 | 64 | 17.83 | 1.41 | 0.92–2.16 |
| 4–6 m | 347 | 24 | 6.92 | 0.47 | 0.27–0.8 | 302 | 42 | 13.91 | 0.94 | 0.55–1.62 |
| ≥6 m | 398 | 46 | 11.56 | 0.82 | 0.49–1.36 | 406 | 51 | 12.56 | 0.94 | 0.58–1.54 |
* Adjusted for sex, race, poverty-to-income ratio, maternal age at delivery, maternal smoking during pregnancy, low birth weight, household smoking exposure, insurance coverage and survey cycle.