Table 1 Characteristics of Study Participants and Nonparticipants
Participants | Nonparticipants | |||
|---|---|---|---|---|
Characteristics | N | Mean (SD) or % | N | Mean (SD) or % |
Age at delivery (years) | 332 | 24.3 (5.2) | 281 | 24.7 (5.1) |
Marital status (% married) | 332 | 65.1% | 281 | 64.4% |
Education (years) | 325 | 9.2 (3.0) | 279 | 9.5 (3.2) |
Number of pregnancies | 332 | 2.0 (1.3) | 281 | 2.0 (1.2) |
Type of delivery (% Caesarian section) | 331 | 19.0% | 277 | 21.3% |
Newborn sex (% male) | 332 | 53.0% | 278 | 56.1% |
Gestational age of newborn (weeks) | 329 | 39.2 (1.4) | 276 | 39.1 (1.6) |
Measures of iron status: | ||||
Hemoglobinb (g/dl) | 329 | 13.5 (1.5) | 273 | 13.6 (1.4) |
Ferritina (ng/ml) | 124 | 22.3 (27.8) | 65 | 21.4 (22.1) |
Ferritinb (ng/ml) | 122 | 28.9 (33.9) | 68 | 25.9 (24.0) |