Table 2.
P values are presented for the Mullen Early Learning Scales (MELS) outcome measures, from a repeated-measure (baseline, 6 months, 1 year) analysis of covariance (RM-ANCOVA). For each MELS scale measure, the raw score was used in the analysis. The T score (standardized) was used for the early learning composite score. Between-group comparison is for MISC and Control groups. Covariates in the model are age at baseline, Caldwell HOME scale score at baseline, SES total at baseline, Weight-for-age Z score (CDC 2000 norms), Hopkins Symptoms Checklist 25-item scale (HSCL-25) anxiety score for the caregiver at 12 months, caregiver years of formal schooling, and gender. Group by gender is the only interaction effect included in this model. Statistically significant P values are in bold.
| Control Variables | Gross motor | Fine motor | Receptive Language | Expressive Language | Visual Reception | Early Learning Composite | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unadj | Adjust | Unadj | Adjust | Unadj | Adjust | Unadj | Adjust | Unadj | Adjust | Unadj | Adjust | |
| Group by Time | .069 | .023 | .145 | .178 | .004 | .004 | .001 | .001 | .676 | .668 | .005 | .006 |
| Child Age | .002 | .002 | .0001 | .0001 | .0001 | .0001 | .0001 | .0001 | .0001 | .0001 | .701 | .365 |
| Caldwell HOME score | .840 | .095 | .039 | .006 | .183 | .011 | ||||||
| SES total (Possessions) | .491 | .378 | .131 | .061 | .326 | .197 | ||||||
| Weight/Age Z | .003 | .121 | .107 | .133 | .049 | .068 | ||||||
| HSCL-25 Caregiver Anxiety (12 mo) | .467 | .173 | .033 | .449 | .146 | .123 | ||||||
| Caregiver Years of Schooling | .605 | .174 | .616 | .351 | .101 | .166 | ||||||
| Group (MISC/Control) | .573 | .911 | .424 | .574 | .925 | .742 | ||||||
| Child Gender | .359 | .053 | .117 | .961 | .363 | .235 | ||||||
| Group by Gender | .794 | .859 | .157 | .314 | .665 | .630 | ||||||