Table 1.
Demographic characteristics of study participants (total-enrolled cohort).
| Characteristics | Exposed cohort N = 1203, N’ = 1199 |
Unexposed cohort N = 1259, N’ = 1248 |
|---|---|---|
| Resident of the study area, n (%) | 1199 (100) | 1248 (100) |
| Age group at the beginning of pregnancy in years, n (%) | ||
| 18–19 y | 147 (12.3) | 198 (15.9) |
| 20–24 y | 395 (32.9) | 365 (29.2) |
| 25–29 y | 301 (25.1) | 311 (24.9) |
| 30–34 y | 201 (16.8) | 222 (17.8) |
| 35–39 y | 124 (10.3) | 120 (9.6) |
| ≥40 y | 31 (2.6) | 32 (2.6) |
| Age at the beginning of pregnancy in years, Mean (SD) | 26.49 (6.15) | 26.28 (6.24) |
Abbreviations: N, total number of participants; N’, number of participants with data available; n (%), number (percentage) of participants; SD, standard deviation.