TABLE 1.
Baseline characteristics by follow-up period and treatment group
| Baseline (n = 1295) |
Growth analysis (n = 546) |
|||
|---|---|---|---|---|
| Zinc (n = 646) | Control (n = 649) | Zinc (n = 273) | Control (n = 273) | |
| Maternal age (y) | 24.1 ± 5.21 | 24.6 ± 5.3 | 23.8 ± 4.6 | 24.5 ± 5.3 |
| Gestational age at entry (wk) | 16.0 ± 4.6 | 15.9 ± 4.6 | 15.3 ± 4.7 | 15.8 ± 4.6 |
| Maternal education (%) | ||||
| <Primary | 5.7 | 9.2 | 5.5 | 11.0 |
| Primary, <secondary | 41.6 | 41.3 | 41.3 | 39.2 |
| Secondary | 30.3 | 30.6 | 34.9 | 34.4 |
| >Secondary | 22.3 | 18.9 | 18.0 | 15.4 |
| Primiparous (%) | 46.8 | 46.3 | 49.1 | 45.4 |
| Maternal BMI (in kg/m2) | 24.0 ± 3.4 | 24.0 ± 3.2 | 24.0 ± 3.2 | 24.0 ± 3.5 |
| Maternal height (cm) | 151.7 ± 5.6 | 151.2 ± 5.6 | 151.8 ± 5.4 | 151.5 ± 5.5 |
| Electricity in home (%)2 | 76.0 | 80.4 | 79.5 | 83.2 |
| Single (%) | 13.9 | 15.3 | 14.3 | 15.0 |
1
x¯ ± SD (all such values).
2
Significant difference in proportion with electricity in their home by treatment group at baseline, P = 0.05 (Pearson chi-square test of independence).