Table A2.
Distribution of study variables in the Add Health analytical and excluded samples due to incomplete data
| Variable | Mean (SD) | |
|---|---|---|
| Analytical sample | Excluded Samplea | |
| Birth weight (grams) | 3246 (556) | 3260 (568) |
| Smoke During Pregnancy | 0.17 (0.38) | 0.17 (0.38) |
| Age (wave 1) | 17.43 (1.64) | 17.43 (1.6) |
| Male baby | 0.51 (0.5) | 0.52 (0.5) |
| Married at Birth | 0.28 (0.45) | 0.26 (0.44) |
| Black | 0.21 (0.41) | 0.3 (0.46) |
| Hispanic | 0.19 (0.39) | 0.16 (0.37) |
| Family Income (during adolescence) | 36.0 (30.78) | 35.58 (33.62) |
| Grandmother Education | 12.45 (2.04) | 12.56 (2.01) |
| No Health Insurance (wave 3) | 0.25 (0.44) | 0.22 (0.41) |
| Medicaid (wave 3) | 0.26 (0.44) | 0.26 (0.44) |
| Want Child Before Pregnancy | 0.38 (0.49) | 0.37 (0.48) |
a
N = 1691.