Skip to Main Content
TABLE 2

Means, SDs, Ranges, and Missing Data for Quantitative Predictor, Control, and Outcome Variables Before Data Imputation (N = 5107)

VariableMean (SD)RangeMissing 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) 
VariableMean (SD)RangeMissing 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) 
Close Modal

or Create an Account

Close Modal
Close Modal