Table 4.
Regression models for Brigance language sub-scores. * significant, p < 0.05.
| BRIGANCE LANGUAGE | |||
|---|---|---|---|
| Characteristic | Univariate Model B ± SE|p-Value |
Multivariate Model B ± SE|p-Value |
Fully Reduced Model B ± SE|p-Value |
| Treatment Group | |||
| 400 IU/day | Reference | Reference | Reference |
| 2000 IU/day | 4.29 ± 2.52|0.09 | 4.61 ± 2.32|0.05 | 4.67 ± 2.29|0.04 * |
| 4000 IU/day | 2.75 ± 2.43|0.26 | 2.96 ± 2.22|0.18 | 3.13 ± 2.21|0.16 |
| 25(OH)D | |||
| Birth 25(OH)D | −0.03 ± 0.11|0.76 | ||
| 3–5 Year 25(OH)D | 0.07 ± 0.10|0.49 | ||
| Maternal Education | |||
| No College Education | Reference | Reference | Reference |
| College Educated | 6.89 ± 2.02|<0.001 | 4.88 ± 2.16|0.03 | 6.35 ± 1.89|0.001 * |
| Marital Status | |||
| Unmarried | Reference | ||
| Married | −0.93 ± 2.06|0.65 | ||
| Sex of Child | |||
| Female | Reference | ||
| Male | 0.42 ± 2.04|0.84 | ||
| Breastfeeding Status | |||
| Formula-fed | Reference | ||
| Breastfed | 3.09 ± 2.08|0.14 | ||
| Race | |||
| White | Reference | Reference | |
| Hispanic | −6.89 ± 2.40|0.005 | −11.79 ± 6.12|0.06 | |
| African American | 2.27 ± 2.46|0.36 | −1.81 ± 3.29|0.58 | |
| Small for Gestational Age | |||
| AGA or LGA | Reference | ||
| SGA | 2.49 ± 3.25|0.44 | ||
| Season | |||
| Summer, Fall, Winter | Reference | Reference | Reference |
| Spring | 5.42 ± 2.02|0.008 | 4.01 ± 1.89|0.04 | 4.163 ± 1.879|0.028 * |
| Insurance Status | |||
| Self Pay | Reference | Reference | |
| Private Insurance | 5.73 ± 2.31|0.014 | −8.76 ± 6.17|0.16 | |
| Medicaid | 9.17 ± 2.49|<0.001 | −6.05 ± 5.79|0.30 | |
| Vitamin D Binding Protein Genotype | |||
| 1f1f | Reference | Reference | Reference |
| 1f1s or 1f2 | −10.09 ± 2.57|<0.001 | −7.79 ± 2.93|0.009 | −9.31 ± 2.45|<0.001 * |
| 1s1s, 1s2, or 2,2 | −7.60 ± 2.32|0.001 | −5.63 ± 2.89|0.05 | −6.76 ± 2.20|0.003 * |