Table 1.
Select Descriptive Statistics of Sample (80,224) of Mother and Infants Born in 2002: U.S. Linked Birth and Infant Death Data Set, 2002
| Variable | % | No. |
|---|---|---|
| Mortality | ||
| Surviving | 99.4 | 80,376 |
| Died | 0.6 | 517 |
| Birthweight, g | ||
| ≥ 2500 | 92.3 | 74,626 |
| <2500 | 7.7 | 6,267 |
| Gestational Age | ||
| Term Birth (>36 weeks) | 88.0 | 71,215 |
| Preterm Birth | 22.0 | 9,678 |
| Gestational Weight Gain, lbs | ||
| ≤24 | 29.3 | 23,738 |
| 25–40 (Ref) | 49.8 | 40,324 |
| ≥41 | 19.2 | 15,568 |
| Maternal Age, y | ||
| ≤34 | 86.7 | 70,167 |
| ≥35 | 13.3 | 10,726 |
| Maternal Education, y | ||
| Less than High School (<12) (Ref) | 20.0 | 16,063 |
| Completed High School (=12) | 31.8 | 25,469 |
| Some College (13–15) | 21.8 | 17,525 |
| Completed College (≥16) | 26.4 | 21,168 |
| Race/Ethnicity | ||
| White (Ref) | 62.4 | 50,493 |
| African American | 15.5 | 12,500 |
| Hispanic | 17.2 | 13,917 |
| Asian or Pacific Islander | 4.0 | 3,201 |
| American Indian | 1.0 | 781 |