Table 2 Characteristics of study participants
Maternal characteristics | Participants with delivery data | Participants without delivery data | P value | ||
|---|---|---|---|---|---|
Mean (±standard deviation) | n | Mean (±standard deviation) | n | ||
Height (cm) | 153.4(±5.6) | 581 | 154.2 (±5.4) | 371 | 0.024 |
Pre-pregnancy weight (kg) | 50.2 (±9.1) | 563 | 50.9 (±9.1) | 381 | 0.270 |
Pre-pregnancy BMI (kg/m2) | 21.3 (±3.5) | 548 | 21.3 (±3.5) | 353 | 0.847 |
Gestational weight gain | 10.2 (±6.0) | 544 | 9.3 (±6.5) | 21 | 0.511 |
Gestational age at delivery (weeks) | 39.3 (±2.6) | 217 | – | – | – |
| Â | N (%) | Â | N (%) | Â | Â |
Maternal age (years): | |||||
  < 20 | 16 (2.7) | 603 | 11 (2.7) | 405 | 0.778 |
 20–24 | 132 (21.9) |  | 77 (19.0) |  |  |
 25–29 | 213 (35.3) |  | 143 (35.3) |  |  |
 30–34 | 152 (25.2) |  | 114 (28.1) |  |  |
  > =35 | 90 (14.9) |  | 60 (14.8) |  |  |
Nulliparous | 209 (34.5) | 606 | 139 (34.8) | 400 | 0.932 |
Educational level - woman: | |||||
 Elementary school | 101 (16.7) | 606 | 40 (9.9) | 404 | 0.013 |
 Junior High school | 141 (23.3) |  | 93 (23.0) |  |  |
 Senior High School | 282 (46.5) |  | 201 (49.8) |  |  |
 Higher education | 82 (13.5) |  | 70 (17.3) |  |  |
Occupationa - woman | |||||
 Unemployed, student or housewife | 445 (74.4) | 598 | 302 (75.5) | 400 | 0.054 |
 Self-employed, trader, services | 54 (9.0) |  | 31 (7.8) |  |  |
 Government employee (civil servant, police, army) | 43 (7.2) |  | 41 (10.3) |  |  |
 Private or state owned enterprise employee | 21 (3.5) |  | 16 (4.0) |  |  |
 Other - ie services, agriculture, labourer | 35 (5.9) |  | 10 (2.5) |  |  |
Occupationa - partner | |||||
 Unemployed, student or housewife | 12 (2.0) | 599 | 7 (1.8) | 400 | 0.000 |
 Self-employed, trader, services | 412 (68.8) |  | 299 (74.8) |  |  |
 Government employee (civil servant, police, army) | 47 (7.8) |  | 37 (9.3) |  |  |
 Private or state owned enterprise employee | 42 (7.0) |  | 38 (9.5) |  |  |
 Other - ie agriculture, labourer | 86 (14.4) |  | 19 (4.8) |  |  |