Table 4.
Regression Coefficients of Models Predicting 30-Month MDI and PDI Scores by 18-Month BRS Total Scores
| Variable | Model 1: 18-Month MDI/PDI |
Model 2: 18-Month BRS |
Model 3: MDI/PDI and BRS |
||||||
|---|---|---|---|---|---|---|---|---|---|
| B | SE | β | B | SE | β | B | SE | β | |
| MDI | |||||||||
| Gestational age | −0.52 | 0.31 | −0.05 | −0.47 | 0.37 | −0.05 | −0.51 | 0.31 | −0.05 |
| Birth weight > 750g | 2.10 | 1.17 | 0.06 | 4.98*** | 1.39 | 0.13 | 2.40* | 1.17 | 0.06 |
| Female | 1.85 | 1.06 | 0.05 | 4.43*** | 1.24 | 0.12 | 1.70 | 1.05 | 0.05 |
| Maternal age | 0.13 | 0.08 | 0.05 | 0.09 | 0.10 | 0.03 | 0.13 | 0.08 | 0.05 |
| Maternal income | |||||||||
| ≥ $40,000 | 7.84*** | 1.50 | 0.20 | 10.73*** | 1.78 | 0.27 | 7.60*** | 1.49 | 0.19 |
| $20,000–$39,999 | 5.51*** | 1.32 | 0.13 | 6.25*** | 1.58 | 0.15 | 5.34*** | 1.31 | 0.13 |
| Maternal education | |||||||||
| Some college | 2.63 | 1.49 | 0.07 | 4.52* | 1.77 | 0.12 | 2.71 | 1.47 | 0.07 |
| HS graduate | 1.26 | 1.50 | 0.03 | 1.26 | 1.79 | 0.03 | 1.20 | 1.49 | 0.03 |
| IVH/PVL | −2.19 | 1.51 | −0.04 | −5.33** | 1.79 | −0.10 | −2.35 | 1.50 | −0.04 |
| BPD | −2.33* | 1.15 | −0.06 | −2.64 | 1.38 | −0.07 | −2.05 | 1.15 | −0.06 |
| NEC | −0.01 | 1.89 | 0.00 | −2.93 | 2.24 | −0.04 | −0.15 | 1.87 | 0.00 |
| Late sepsis | −0.27 | 1.12 | −0.01 | −0.98 | 1.34 | −0.03 | −0.38 | 1.11 | −0.01 |
| Early intervention by 18 months | −1.74 | 1.12 | −0.05 | −2.45 | 1.34 | −0.07 | −1.56 | 1.11 | −0.04 |
| MDI at 18 months | 0.61*** | 0.03 | 0.58 | 0.56*** | 0.04 | 0.53 | |||
| BRS total score | 0.22*** | 0.02 | 0.38 | 0.07** | 0.02 | 0.12 | |||
| Model R2 | 0.62 | 0.46 | 0.63 | ||||||
| PDI | |||||||||
| Gestational age | −0.38 | 0.38 | −0.03 | −0.78 | 0.43 | −0.07 | −0.41 | 0.38 | −0.04 |
| Birth weight > 750g | 2.72 | 1.44 | 0.06 | 5.30** | 1.61 | 0.12 | 3.01* | 1.43 | 0.07 |
| Female | 2.85* | 1.28 | 0.07 | 4.37*** | 1.44 | 0.10 | 2.53* | 1.28 | 0.06 |
| Maternal age | −0.03 | 0.10 | −0.01 | −0.06 | 0.11 | −0.02 | −0.02 | 0.10 | −0.01 |
| Maternal income | |||||||||
| ≥ $40,000 | 4.03* | 1.82 | 0.09 | 4.10* | 2.06 | 0.09 | 3.43 | 1.81 | 0.08 |
| $20,000–$39,999 | 4.02* | 1.62 | 0.08 | 3.73* | 1.83 | 0.08 | 3.70* | 1.61 | 0.08 |
| Maternal education | |||||||||
| Some college | 4.62* | 1.82 | 0.11 | 3.80 | 2.05 | 0.09 | 4.45* | 1.81 | 0.11 |
| HS graduate | 3.07 | 1.85 | 0.07 | 1.55 | 2.08 | 0.03 | 2.87 | 1.83 | 0.06 |
| IVH/PVL | −1.23 | 1.87 | −0.02 | −5.42** | 2.07 | −0.09 | −1.48 | 1.85 | −0.02 |
| BPD | −1.25 | 1.43 | −0.03 | −3.48* | 1.60 | −0.08 | −1.08 | 1.42 | −0.03 |
| NEC | 0.24 | 2.31 | 0.00 | −1.19 | 2.60 | −0.02 | 0.24 | 2.29 | 0.00 |
| Late sepsis | 0.29 | 1.38 | 0.01 | −0.14 | 1.55 | 0.00 | 0.19 | 1.37 | 0.00 |
| Early intervention by 18 months | −2.18 | 1.39 | −0.05 | −4.93** | 1.55 | −0.12 | −2.13 | 1.38 | −0.05 |
| PDI at 18 months | 0.58** | 0.04 | 0.50 | 0.53*** | 0.04 | 0.45 | |||
| BRS total score | 0.21*** | 0.03 | 0.31 | 0.08** | 0.03 | 0.13 | |||
| Model R2 | 0.56 | 0.44 | 0.56 | ||||||
Note: N = 539.
*
p ≥ .05
**
p < .01
***
p < .001
Each model controls for study site. Reference categories are male, birth weight ≥ 750g, mother income < $20,000, mother does not have a HS diploma, no IVH/PVL, no BPD, no NEC, no late sepsis, and had not received early intervention by 18 months of age.