Skip to main content

Table 2 GEE model results

From: Non-verbal IQ and change in restricted and repetitive behavior throughout childhood in autism: a longitudinal study using the Autism Diagnostic Interview-Revised

ADI-R item Wald χ2 (14) = 624.32, p < 0.001
Site Wald χ2(4) = 25.87, p < 0.001
Age at enrollment Wald χ2( 1) =  < 0.01, p = 0.989
Age Wald χ2(1) = 28.40, p < 0.001
NVIQ Wald χ2(1) = 2.70, p = 0.101
ADI-R item * Age Wald χ2 (14) = 160.74, p < 0.001
ADI-R item * NVIQ Wald χ2 (14) = 30.22, p = 0.007
ADI-R item * Age * NVIQ Wald χ2(15) = 32.60, p = 0.005