HRA+ | HRA− | LRC | c p (3-group) | |
---|---|---|---|---|
Sex (% female) | 30.0 n = 30 | 53.5 n = 71 | 44.9 n = 69 | .09 |
Race/ethnicity (% White) | 83.3 n = 30 | 95.7 n = 71 | 88.4 n = 69 | .08 |
a Household income | 7.08 (2.02) n = 24 | 7.69 (0.91) n = 67 | 7.52 (1.38) n = 58 | .79 |
b Mother’s level of education | 5.04 (1.72) n = 25 | 5.74 (1.65) n = 68 | 6.65 (1.22) n = 62 | .0002*** |
Actual age at visits (month) | ||||
6 months | 5.91 (0.43) n = 22 | 5.96 (0.28) n = 50 | 5.97 (0.36) n = 61 | .79 |
12 months | 11.93 (0.45) n = 30 | 11.94 (0.38) n = 67 | 11.87 (0.42) n = 67 | .54 |
18 months | 18.12 (0.78) n = 25 | 17.91 (0.42) n = 67 | 18.01 (0.27) n = 67 | .11 |
24 months | 24.16 (0.55) n = 25 | 24.03 (0.55) n = 61 | 24.10 (0.56) n = 63 | .60 |
36 months | 36.09 (0.68) n = 22 | 36.57 (1.50) n = 51 | 36.33 (0.64) n = 54 | .20 |