Table 1.
Descriptive characteristics of Tsimane and Cincinnati mothers and infants*
| Tsimane (n = 35) | Cincinnati (n = 35) | |||
|---|---|---|---|---|
| Mean ± SD | Range | Mean ± SD | Range | |
| Maternal age (years) | 26 ± 8.5 | 15–45 | 32 ± 4.9 † | 22–42 |
| Maternal weight (kg) | 55.9 ± 9.2 | 43.1–79.7 | 63.8 ± 10.1 ‡ | 50.9–95.7 |
| Maternal height (cm) | 151.1 ± 4.3 | 142.0–162. 0 | 163.7 ± 5.2 § | 153.7–178.4 |
| Maternal BMI (kg m−2) | 24.5 ± 3.7 | 18.6–34.0 | 23.8 ± 3.7NS | 19.7–35.1 |
| Maternal parity | 4.3 ± 2.8 | 1–11 | 1.9 ± 0.8 ‡ | 1–4 |
| Lactational stage (weeks) | 43.8 ± 23.5 | 6.4–82.1 | 43.8 ± 23.5NS | 7.0–80.7 |
| Infant WAZ | −0.9 ± 1.4 | −4.1–1.8 | −0.3 ± 1.1NS | −2.1–2.3 |
| Infant LAZ | −1.4 ± 1.4 | −3.5–2.1 | −0.3 ± 1.0 ‡ | −2.0–2.0 |
| Infant WLZ | −0.1 ± 1.1 | −2.5 ± 2.3 | −0.2 ± 1.1NS | −2.1–2.8 |
WAZ, weight‐for‐age z‐score; LAZ, length‐for‐age z‐score; WLZ, weight‐for‐length z–score; NS, non‐significant; SD, standard deviation; BMI, body mass index. *Values are means ± SD. Sample population differences were compared by paired‐sample Student's t‐tests. Significance levels are adjusted q‐values obtained by the false discovery rate method to control for multiple comparisons († q < 0.05, ‡ q < 0.01, § q < 0.001, NS).