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Table 4 Autism behaviors longitudinal response profile and least square means by group at 6 and 12 months

From: Behavioral, cognitive, and adaptive development in infants with autism spectrum disorder in the first 2 years of life

AOSI total score HR-ASD-High (a) HR-ASD-Mod (b) HR-Neg (c) LR-Neg (d) Overall Group Comparisona Post hoc comparisonsb
(n = 31) (n = 18) (n = 161) (n = 98)
LSM SE LSM SE LSM SE LSM SE df1 df2 F p
6 Month visit 10.6 0.7 10.1 0.9 9.7 0.3 8.2 0.4 3 293 4.1 0.0068  
12 Month visit 9.3 0.7 7.9 0.9 5.1 0.3 4.4 0.4 3 293 15.8 <0.0001 a < (c, d)
  1. aThe Overall Group Comparison serves as an omnibus test comparing the means between the four groups to determine whether group means differ based on a mixed model with repeated measures. Model covariates included the difference between the child’s actual age at the visit from the scheduled visit age (6 and12 months). Other covariates included site and mother’s education. Two-sided at significance level of .05
  2. bPost hoc comparisons with step-up Bonferroni correction. Two-sided at significance level of .05