Table 1.
General demographic characteristics of studied women.
| Maternal data | All n = 302 | Adolescents n = 151 | Nonadolescents n = 151 | P value* |
|---|---|---|---|---|
| Age (years) | 20.0 ± 3.8 | 17.2 ± 1.4 | 23.0 ± 3.0 | .001 |
| Non married status (%) | 187 (61.9) | 103 (68.2) | 84 (55.6) | .02 |
| Currently living together (%) | 236 (78.1) | 116 (76.8) | 120 (79.5) | .57 |
| Sometime smoked during pregnancy (%) | 1 (0.3) | 1 (0.7) | 0 (0.0) | .98 |
| Sometime alcohol consumption during pregnancy (%) | 15 (5.0) | 5 (3.3) | 10 (6.6) | .18 |
| Rural residency (%) | 86 (28.5) | 45 (29.8) | 41 (27.1) | .61 |
| Before becoming pregnant | ||||
| Was studying | 137 (45.4) | 102 (67.5) | 35 (23.1) | .001 |
| Was working | 80 (26.5) | 18 (11.9) | 62 (41.1) | .001 |
| Nothing | 65 (21.5) | 24 (15.9) | 41 (27.2) | .01 |
| Working and studying | 20 (6.6) | 7 (4.7) | 13 (8.6) | .16 |
| Was performing family planning method before becoming pregnant | 47 (15.6) | 25 (16.6) | 22 (14.6) | .63 |
| Age of grandmother's first child | 18.9 ± 3.9 | 18.7 ± 3.7 | 19.0 ± 4.0 | .001 |
| Number of prenatal visits | 7.0 ± 2.6 | 6.9 ± 2.9 | 7.0 ± 2.3 | .29 |
| Less than 5 prenatal visits | 42 (13.9) | 22 (14.6) | 20 (13.2) | .73 |
| Gestational age at first visit | 9.9 ± 6.9 | 11.1 ± 7.5 | 8.7 ± 6.2 | .001 |
|
| ||||
| Partner data | ||||
| Age (years) | 24.4 ± 5.7 | 22.0 ± 4.0 | 26.8 ± 6.0 | .001 |
| Current smoking habit | 24 (7.9) | 16 (10.6) | 8 (5.3) | .08 |
| Alcohol consumption | 79 (26.2) | 39 (25.8) | 40 (26.5) | .89 |
| Currently employed | 254 (84.1) | 124 (82.1) | 130 (86.0) | .34 |
Data are presented as mean ± standard deviations and percentages (%); *P value after comparing cases and controls with Wilcoxon signed-rank test, chi-square test or Fisher's exact test.