My data use baseline WPPSI tests to compare with later WPPSI tests after a year of treatment. Dose of Reflective Network Therapy sessions correlates with IQ rise, regardless of diagnoses.
Dear Gilbert,
The following study: Predictors of effectiveness of early intervention on children with intellectual disability: a retrospective cohort study
Der-Chung Lai, et al. ; BMC Pediatr. 2014; 14: 170.
compares WPPSI test before and after treatment with the following methods:
We presented descriptive statistics of the variables as mean ± SD or percentage. We evaluated differences in IQ scores using the paired t-test or Wilcoxon signed ranks test when data were compared in pairs, and applied the Mann–Whitney U test when the differences in IQ scores were evaluated by stratified analyses. To identify the predictors of the effectiveness of early intervention and evaluate their effects, we used linear regressions. We conducted the data analyses using SPSS for Windows Version 15.0 and performed statistical tests at the two-tailed significance level of 0.05.
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