Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Demographics of the test cohort
| Test cohort (n = 427) | |
|---|---|
| Age at the last follow-up date, years, median (interquartile range) | 5.3 (3.6, 6.7) |
| Male, n (%) | 209 (48%) |
| White, n (%) | 315 (74%) |
| Asthma (ascertained by abstractors), n (%) | 36 (8%) |
| Allergic rhinitis, n (%) | 39 (9%) |
| Eczema, n (%) | 102 (24%) |
| Family history of asthma, n (%) | 101 (23%) |
| Maternal smoking during pregnancy, n (%) | 33 (7%) |
| History of breastfeeding, n (%) | 354 (84%) |
