Table 1.
LIFECODES Prospective pregnancy cohort profile: raw counts and weighteda proportions (N=390)
| Population Characteristics | Raw Count (percent) | Weighted Count (percent) | |
|---|---|---|---|
| Age | 18 – 24 | 41 (10.5%) | 44 (11.2%) |
| 25 – 29 | 76 (19.5%) | 78 (19.9%) | |
| 30 – 34 | 159 (40.8%) | 157 (40.3%) | |
| 35 + | 114 (29.2%) | 112 (28.6%) | |
| Race/ethnicity | White | 234 (60.0%) | 233 (59.7%) |
| African-American | 58 (14.9%) | 59 (15%) | |
| Other | 98 (25.1%) | 99 (25.3%) | |
| Education | High school degree (13 years) | 53 (13.6%) | 50 (12.9%) |
| Technical school (>13 years) | 59 (15.1%) | 5.7 (14.7%) | |
| Junior college or some college (>13 years) | 116 (29.7%) | 117 (30%) | |
| College graduate (16+ years) | 152 (39.0%) | 15 (39.5%) | |
| Missing | 10 (2.56%) | 11 (2.9%) | |
| Health Insurance Provider | Private/HMO/Self-pay | 317 (81.3%) | 314 (80.6%) |
| Medicaid/SSI/MassHealth | 64 (16.4%) | 66 (16.8%) | |
| Missing | 9 (2.31%) | 10 (2.6%) | |
| BMI at Initial Visit | <25 kg/m2 | 208 (53.3%) | 210 (53.9%) |
| 25 – 29.9 kg/m2 | 101 (25.9%) | 104 (26.6%) | |
| ≥ 30 kg/m2 | 79 (20.3%) | 74 (18.9%) | |
| Missing | 2 (0.51%) | 2 (0.6%) | |
| Tobacco Use | No smoking during pregnancy | 360 (92.3%) | 361 (92.6%) |
| Smoked during pregnancy | 25 (6.41%) | 23 (5.9%) | |
| Missing | 5 (1.28%) | 6 (1.5%) | |
| Alcohol Use | No alcohol use during pregnancy | 366 (93.8%) | 364 (93.3%) |
| Alcohol use during pregnancy | 15 (3.85%) | 18 (4.6%) | |
| Missing | 9 (2.31%) | 8 (2.2%) | |
| Fetal Sex | Female | 170 (43.6%) | 175 (45%) |
| Male | 220 (56.4%) | 215 (55%) | |
a
Weighted using inverse probability weighting to account for the sampling approach of the nested case-control sample