Table 1.
Demographic and anthropometric profile and supplement use of women from the Brazilian cohort, Rio de Janeiro, Brazil.
| Variables | Participants | |||||||
|---|---|---|---|---|---|---|---|---|
| With Samples (n = 101) | Without Samples (n = 46) | |||||||
| Median | IQR | Mean | SD | Median | IQR | Mean | SD | |
| Maternal age (years) 1 | 26.1 | 22.8–31.6 | 27.2 | 5.5 | 27.8 | 22.8–30.4 | 26.9 | 5.4 |
| Education (years) 1 | 12.0 | 10.0–12.0 | 10.9 | 2.8 | 10.5 | 8.2–12.0 | 10.5 | 2.6 |
| Parity (livebirths) 1 | 0.0 | 0.0–1.0 | 0.7 | 0.8 | 0.5 | 0.0–1.0 | 0.8 | 1.1 |
| Pre-pregnancy weight (kg) 2 | 63.0 | 55.0–72.0 | 65.1 | 14.8 | 61.5 5 | 57.2–70.1 5 | 64.2 5 | 14.0 5 |
| Gestational age at birth (weeks) | 39.4 | 38.9–40.6 | 39.5 | 1.4 | 39.7 6 | 39.1–40.4 6 | 39.5 6 | 1.5 6 |
| Gestational weight gain (kg) | 12.4 | 8.6–15.5 | 12.4 | 6.2 | 11.77 | 8.7–18.0 7 | 12.8 7 | 7.9 7 |
| Pre-pregnancy body mass index (BMI) (kg/m2) 3 | 24.4 4 | 21.3–28.8 4 | 25.7 4 | 5.7 4 | 22.9 8 | 21.8–29.6 8 | 24.7 8 | 4.9 8 |
| n (%) | ||||||||
| Pre-pregnancy BMI categories (kg/m2) | ||||||||
| Underweight (<18.5) | 3 (3.2) 4 | 1 (6.7) 8 | ||||||
| Normal weight (18.5–24.9) | 48 (50.5) 4 | 8 (53.3) 8 | ||||||
| Overweight (≥25.0) | 44 (46.3) 4 | 6 (40.0) 8 | ||||||
| Iron supplement use (yes) 9 | 39 (42.9) | 15 (35.7) | ||||||
| Folic acid supplement (yes) 9 | 79 (87.8) | 40 (95.2) | ||||||
IQR: interquartile range. Data of the participants with and without samples were not different according to Mann–Whitney, p < 0.05. 1 Baseline information. 2 Pre-pregnancy weight was self-reported. 3 Pre-pregnancy body mass index (BMI) was calculated with measured height at 28–50 days postpartum and pre-pregnancy weight. 4 Due to missing data, n = 95. 5 Due to missing data, n = 44. 6 Due to missing data, n = 35. 7 Due to missing data, n = 41. 8 Due to missing data, n = 15. 9 During pregnancy.