Table 3.

T-tests and Pearson’s Correlations Between Key Measures and Potential Covariates

	Time-1 ADOS-SA	Time-1 MSEL DQ	Time-2 VABS ABC
Child Sex	t(158) = 1.45, p = .148	t(158) = -2.31, p = .022	t(158) = -1.41, p = .160
Developmental Regression	r = .05, p = .566	r = -.12, p = .218	r = -.09, p = .364
Multiplex/Simplex status	r = -.02, p = .775	r = .02, p = .795	r = .00, p = .999
Follow-up period	r = .04, p = .590	r = .02, p = .758	r = -.13, p = .094

Note: ADOS SA = Autism Diagnostic Observation Schedule Social Affect total algorithm score, MSEL DQ = Mullen Scales of Early Learning Developmental Quotient, VABS ABC = Vineland Adaptive Behaviour Scales Adaptive Behaviour Composite, Child sex coded 0 = male, 1 = female