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. Author manuscript; available in PMC: 2013 Mar 20.
Published in final edited form as: J Autism Dev Disord. 2012 Dec;42(12):2648–2658. doi: 10.1007/s10803-012-1522-z

Fig. 2.

Fig. 2

Mean (95 % confidence intervals) salivary alpha-amylase levels in children by diagnosis*‡ and by functional status†§. *Marginal estimate obtained from causal modeling with g-computation estimation; 95 % confidence interval obtained from bootstrapping with repeated sampling †Least squares mean and 95 % confidence interval obtained from generalized estimating equation (GEE). We could not obtain CIs around the g-computation estimates from bootstrapping. The CIs around the g-computation estimates would be more conservative and preferred because they are the correct estimates. ‡Diagnosis: AUT = children with autism (N = 26); TYP = typically developing children (N = 26); adjusted for time (dummy), child's age (continuous), CBCL total score2 (continuous), phase (ordinal), and mother works (dichotomous) §Functional status: BLFA = both low functioning children with autism (N = 21); HFA = high functioning children with autism (N = 5); adjusted for time (dummy), child's age (continuous), CBCL total score squared (continuous), and phase (ordinal)