Table 1 General characteristics of pregnant women and fetuses 1
Variables | n | Values |
|---|---|---|
Pregnant women | ||
Age, y | 327 | 29.9 ± 3.6 |
Height, cm | 324 | 160.8 ± 4.8 |
Pre-pregnancy weight, kg | 325 | 56.5 ± 9.7 |
Pre-pregnancy BMI2, kg/m 2 | 323 | 21.9 ± 3.5 |
Education, n (%) | 337 | |
< High school | 99 (29.4) | |
< University | 59 (17.5) | |
≥ University | 163 (48.4) | |
No-response | 16 (4.7) | |
Family income, US$/mo, n (%) | 337 | |
< 2000 | 95 (28.2) | |
2000 - 4000 | 174 (51.6) | |
> 4000 | 43 (12.8) | |
No-response | 25 (7.4) | |
Passive smoker, n (%) | 337 | |
No | 41 (12.2) | |
Yes | 268 (79.5) | |
No-response | 28 (8.3) | |
Urinary cotinine level, μg/g creatinine | 316 | 71.8 ± 444.2 |
Supplement users, n (%) | 337 | |
No | 240 (71.2) | |
Yes | 97 (28.8) | |
Parity | 337 | |
0 | 180 (53.4) | |
≥1 | 147 (43.6) | |
No-response | 10 (3.0) | |
Fetuses | ||
Sex | 323 | |
Girls, n (%) | 164 (48.7) | |
Boys, n (%) | 159 (47.2) | |
Gestational age, wk | 337 | 20.0 ± 3.4 |
Biparietal diameter, cm | 334 | 4.8 ± 1.1 |
Abdominal circumference, cm | 231 | 16.6 ± 3.8 |
Femur length, cm | 297 | 3.3 ± 1.0 |