Table 3.

Performance of the MARA across different ages and cognitive/developmental levels

	# Subjects	# Subjects with clinical ASD diagnosisa	Sensitivity [95 % CI] (%)	Specificity [95 % CI] (%)
Total sample	222	69	89.9 [82.7–97]	79.7 [73.4–86.1]
Age <3 years	38	25	96 [88.3–100]	61.5 [35.1–88]
Age 3–6 years	103	33	84.8 [72.6–97.1]	75.7 [65.7–85.8]
Age >6 years	81	11	90.9 [73.9–100]	87.1 [79.3–95]
Cognitive/development scorea <70	15	7	100 [100–100]	62.5 [29–96]
Cognitive/development scorea 70–84	24	14	78.6 [57.1–100]	50 [19–81]
Cognitive/development scorea 85–100	46	19	100 [100–100]	70.4 [53.1–87.6]
Cognitive/development scorea >100	32	12	75 [50.5–99.5]	80 [62.5–97.5]

^aCognitive/development score is based on non-verbal IQ for whom N = 117 subjects had available data

MARA Mobile Autism Risk Assessment