TABLE 3

Comparison of M-CHAT Scores of Study Cases According to ASD Diagnosis

VariableNMean (95% CI)t Test P ValueTOST
t1 Pt2P
Overalla.03<.001.76
 ASD positive396.5 (5.2–7.7)
 ASD negative595.0 (4.2–5.8)
M-CHAT/F failb.56.08.39
 ASD positive238.4 (6.7–10.1)
 ASD negative177.7 (6.1–9.3)
M-CHAT/F passb.71.06.01
 ASD positive163.7 (3.2–4.2)
 ASD negative423.9 (3.3–4.5)
  • Comparisons were made with 2-tailed t test and TOST, Δ = 1 point. CI, confidence interval.

  • a Relevant difference.

  • b Indeterminate (underpowered).