Means, SDs, Ranges, and Missing Data for Quantitative Predictor, Control, and Outcome Variables Before Data Imputation (N = 5107)
| Variable . | Mean (SD) . | Range . | Missing Data N (%) . |
|---|---|---|---|
| Child’s birth wt, g | 3410.15 (568.83) | 382.00–5440.00 | 35 (0.7) |
| Child’s age wave 1, y | 0.77 (0.21) | 0.33–1.59 | 0 (0) |
| Child’s age wave 3, y | 4.88 (0.25) | 4.16–5.84 | 721 (14) |
| Child’s age wave 4, y | 6.91 (0.29) | 6.16–7.92 | 865 (17) |
| Child’s age wave 5, y | 8.99 (0.32) | 8.08–9.84 | 1022 (20) |
| Child’s age wave 6, y | 11.01 (0.33) | 10.08–11.84 | 1343 (26) |
| Mother’s age wave 1, y | 31.48 (5.47) | 15.66–63.92 | 7 (0.1) |
| Average daily cigarettes while pregnant | 1.19 (3.81) | 0.00–55.00 | 1041 (20) |
| Mother’s average daily cigarettes wave 1 | 2.09 (5.25) | 0.00–40.0 | 823 (16) |
| WAI score wave 3 | 26.94 (7.10) | 1.00–43.00 | 910 (18) |
| Adapted PPVT-III score wave 3 | 65.16 (5.99) | 34.00–85.00 | 841 (17) |
| Adapted PPVT-III score wave 4 | 74.43 (5.15) | 36.00–92.00 | 922 (18) |
| Adapted PPVT-III score wave 5 | 79.10 (4.83) | 52.00–106.00 | 1093 (21) |
| MR score wave 4 | 14.00 (4.67) | 3.00–30.00 | 927 (18) |
| MR score wave 5 | 19.55 (4.83) | 1.00–32.00 | 1107 (22) |
| MR score wave 6 | 22.08 (5.07) | 1.00–33.00 | 1509 (30) |
| Breastfeeding duration, d | 228.89 (202.88) | 0.00–1157 | 583 (11) |
| Variable . | Mean (SD) . | Range . | Missing Data N (%) . |
|---|---|---|---|
| Child’s birth wt, g | 3410.15 (568.83) | 382.00–5440.00 | 35 (0.7) |
| Child’s age wave 1, y | 0.77 (0.21) | 0.33–1.59 | 0 (0) |
| Child’s age wave 3, y | 4.88 (0.25) | 4.16–5.84 | 721 (14) |
| Child’s age wave 4, y | 6.91 (0.29) | 6.16–7.92 | 865 (17) |
| Child’s age wave 5, y | 8.99 (0.32) | 8.08–9.84 | 1022 (20) |
| Child’s age wave 6, y | 11.01 (0.33) | 10.08–11.84 | 1343 (26) |
| Mother’s age wave 1, y | 31.48 (5.47) | 15.66–63.92 | 7 (0.1) |
| Average daily cigarettes while pregnant | 1.19 (3.81) | 0.00–55.00 | 1041 (20) |
| Mother’s average daily cigarettes wave 1 | 2.09 (5.25) | 0.00–40.0 | 823 (16) |
| WAI score wave 3 | 26.94 (7.10) | 1.00–43.00 | 910 (18) |
| Adapted PPVT-III score wave 3 | 65.16 (5.99) | 34.00–85.00 | 841 (17) |
| Adapted PPVT-III score wave 4 | 74.43 (5.15) | 36.00–92.00 | 922 (18) |
| Adapted PPVT-III score wave 5 | 79.10 (4.83) | 52.00–106.00 | 1093 (21) |
| MR score wave 4 | 14.00 (4.67) | 3.00–30.00 | 927 (18) |
| MR score wave 5 | 19.55 (4.83) | 1.00–32.00 | 1107 (22) |
| MR score wave 6 | 22.08 (5.07) | 1.00–33.00 | 1509 (30) |
| Breastfeeding duration, d | 228.89 (202.88) | 0.00–1157 | 583 (11) |