Table 1.
Characteristics of the total enrolled study sample and the analytical study sample
| Characteristic | Enrolled study sample | Analytical study sample* |
|---|---|---|
| Sex, % (n/total) | ||
| Male | 51.2 (786/1,536) | 50.4 (696/1,381) |
| Female | 48.8 (750/1,536) | 49.6 (685/1,381) |
| FLG genotype, % (n/total) | ||
| Loss-of-function | 10.3 (118/1,150) | 10.3 (116/1,129) |
| Maternal eczema, % (n/total) | ||
| Yes | 12.1 (147/1,213) | 12.1 (144/1,191) |
| Paternal eczema, % (n/total) | ||
| Yes | 6.4 (78/1,213) | 6.5 (77/1,191) |
| Birthweight, % (n/total) | ||
| Low/normal† | 88.0 (1,329/1,511) | 87.6 (1,192/1,360) |
| High‡ | 12.0 (182/1,511) | 12.4 (168/1,360) |
| Birth order, % (n/total) | ||
| First | 42.1 (510/1,212) | 42.0 (500/1,189) |
| Second | 34.6 (419/1,212) | 34.5 (410/1,189) |
| Third or more | 23.3 (283/1,212) | 23.5 (279/1,189) |
| Household cat at birth, % (n/total) | ||
| Yes | 32.4 (492/1,516) | 32.6 (448/1,374) |
| Household dog at birth, % (n/total) | ||
| Yes | 29.0 (440/1,516) | 28.8 (396/1,374) |
| Breastfeeding duration, Median (IQR) | ||
| Weeks | 8.0 (1.0-26.0) | 9.0 (2.0-28.0) |
IQR: interquartile range.
*
Includes participants who have three or more valid eczema status information (i.e., not missing) across the five analytical follow-ups.
†
Low/normal birthweight: <4000 grams.
‡
High birthweight: ≥4000 grams