Table 1 Sample characteristics of 106 pregnant women participating in PROTECT project (2010–2012)
Variable | Mean ± SD or n (%) |
|---|---|
Maternal age at enrollment (years) | 27.1 ± 4.8 |
Maternal education | Â |
 Missing | 3 (2.8) |
 <High school | 12 (11.3) |
 High school/equivalent | 7 (6.6) |
 College | 84 (79.2) |
Annual household income (US$) | Â |
 Missing | 17 (16.0) |
 $20,000 | 45 (42.4) |
 ≥$20,000 to < $50,000 | 27 (25.5) |
 ≥$50,000 | 17 (16.0) |
Race | Â |
 Missing | 3 (2.8) |
 White | 52 (49.1) |
 Mixed | 39 (36.8) |
 Other | 12 (11.3) |
Prepregnancy BMI (kg m-2) |  |
 Missing | 4 (3.8) |
 ≤25 | 59 (55.7) |
 >25 to ≤30 | 31 (29.2) |
 >30 | 12 (11.3) |
Smoked during pregnancy | Â |
 Missing | 5 (4.7) |
 Yes | 1 (0.9) |
 No | 100 (94.3) |
Alcohol use at first visit during pregnancy | Â |
 Missing | 4 (3.8) |
 Yes | 12 (11.3) |
 No | 90 (84.9) |