TABLE 2.
Child health characteristics1
| Characteristic | n (%) or mean ± SD | Range |
|---|---|---|
| Weight (pounds) | ||
| Birth | 7.7 ± 1.0 | 4.6–10.6 |
| Week 6 | 10.7 ± 1.4 | 7.1–16.7 |
| Length (inches) | ||
| Birth | 20.1 ± 1.0 | 16.8–23.5 |
| Week 6 | 22.0 ± 1.2 | 8.5–24.9 |
| WFLZ | ||
| Birth | −0.4 ± 1.3 | −4.8 to 3.5 |
| Week 6 | 0.0 ± 1.1 | −3.8 to 3.4 |
| Maternal report of child physical health at 6 wk | ||
| Excellent | 338 (72.2) | |
| Very good | 112 (23.9) | |
| Good | 14 (2.9) | |
| Fair | 2 (0.4) | |
| Poor | 1 (0.2) | |
| Unknown/missing | 1 (0.2) | |
| Feeding method2 at 1 wk | ||
| Exclusive breastfeeding | 330 (70.5) | |
| Exclusive formula feeding | 33 (7.1) | |
| Combined | 101 (21.6) | |
| Unknown/missing | 4 (0.9) | |
| Feeding method2 at 6 wk | ||
| Exclusive breastfeeding | 317 (67.7) | |
| Exclusive formula feeding | 65 (13.9) | |
| Combined | 84 (17.9) | |
| Unknown/missing | 2 (0.4) | |
1 n = 468. Percentages may not add up to 100 because of rounding. Data that are unknown or missing were not provided by the mother. WFLZ, child weight-for-length z score.
2Feeding method was determined based on responses to the question, “Did you feed your baby formula, breast milk, or both in the past 7 days?”