TABLE 3.

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

Variable	N	Mean (95% CI)	t Test P Value	TOST
				t1 P	t2 P
Overalla			.03	<.001	.76
ASD positive	39	6.5 (5.2–7.7)
ASD negative	59	5.0 (4.2–5.8)
M-CHAT/F failb			.56	.08	.39
ASD positive	23	8.4 (6.7–10.1)
ASD negative	17	7.7 (6.1–9.3)
M-CHAT/F passb			.71	.06	.01
ASD positive	16	3.7 (3.2–4.2)
ASD negative	42	3.9 (3.3–4.5)

Comparisons were made with 2-tailed t test and TOST, Δ = 1 point. CI, confidence interval.

^aRelevant difference.

^bIndeterminate (underpowered).