TABLE 4.
Unstandardized Regression Coefficients, CIs, Adjusted R2, and Model Summary, Examining Predictors of Change in Development and Behavior From 6 to 10 Months and Temperament at 10 Months
| Predictor | Mental Development (Regression Coefficient [CI]) | Motor Development (Regression Coefficient [CI]) | Orientation/Engagement (Regression Coefficient [CI]) |
|---|---|---|---|
| Birth weight | 1.12 (−1.68 to 4.01)* | 9.96 (3.37 to 16.55)* | 7.53 (−5.73 to 21.00) |
| Weight gain | −0.57 (−1.52 to 0.39) | 2.00 (−0.27 to 4.27) | 1.72 (−2.86 to 6.26) |
| 6-mo score | 0.19 (0.03 to 0.21) | 0.39 (0.24 to 0.56)* | 0.11 (−0.13 to 0.35) |
| Gender | −2.05 (−3.59 to −0.50)† | −1.60 (−5.22 to 2.07) | −7.08 (−15.01 to 0.70) |
| Socioeconomic status | 1.43 (0.72 to 2.14)* | 0.77 (−0.82 to 2.49) | 5.16 (1.66 to 8.65)* |
| Temperament | −0.75 (−2.00 to 0.49) | −1.34 (−4.59 to 1.13) | 2.42 (−3.62 to 8.38) |
| Maternal responsivity | 0.60 (−0.28 to 0.39) | 0.38 (−0.50 to 1.27) | −0.34 (−2.23 to 1.56) |
| Zinc | 0.18 (−1.32 to 1.69) | 1.21 (−2.30 to 4.72) | 0.71 (−6.60 to 8.03) |
| Zinc × birth weight | 1.16 (−3.84 to 6.16) | −11.32 (−22.76 to 0.12)* | 0.003 (0.02 to 0.03) |
| Model summary | R2 = .25, P = .0001 | R2 = .41, P = .0001 | R2 = .15, P = .03 |
|
| |||
| Predictor | Emotional Regulation (Regression Coefficient [CI]) | Motor Quality (Regression Coefficient [CI]) | Temperament (Regression Coefficient [CI]) |
|
| |||
| Birth weight | 2.55 (−3.72 to 8.99) | 0.97 (−1.15 to 3.31) | −0.66 (−1.07 to −0.31)* |
| Weight gain | 0.35 (−1.93 to 2.60) | 0.44 (−0.35 to 1.23) | 0.02 (−0.12 to 0.16) |
| 6-month score | 0.11 (0.02 to 0.19)† | 0.04 (0.23 to 0.65)† | NA |
| Gender | −4.69 (−8.49 to −0.99)† | −0.31 (−1.62 to 0.99) | −0.11 (−0.34 to 0.12) |
| Socioeconomic status | 0.91 (−0.79 to 2.61) | 0.34 (−0.25 to 0.94) | −0.02 (−0.13 to 0.09) |
| Temperament | −0.85 (−3.76 to 2.06) | −0.40 (−1.41 to 0.61) | NA |
| Maternal responsivity | 0.19 (−0.72 to 1.11) | −0.10 (−0.43 to 0.22) | −0.08 (−0.13 to −0.03)* |
| Zinc | 0.44 (−3.10 to 3.99) | 0.47 (−0.77 to 1.71) | 0.15 (−0.07 to 0.37) |
| Zinc × birth weight | −0.001 (−0.01 to 0.02) | −0.001 (−0.005 to 0.003) | −0.73 (−1.47 to 0.01)‡ |
| Model summary | R2 = .14, P = .03 | R2 = .20, P = .001 | R2 = .19, P = .001 |
*
P < .01.
†
P < .05.
‡
P = .056.