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. 2020 Jul 31;146(2):e20192314. doi: 10.1542/peds.2019-2314

TABLE 6.

Age of ASD Diagnosis by M-CHAT Completion and Result

ASD Screening Test Age of First ASD Diagnosis, moa 95% CI P
M-CHAT
 Screened 46.5 43.5–49.6 .34
 Not screened 48.5 44.6–52.3 Reference
M-CHAT result
 Screen-positive 38.5 34.2–42.7 <.001
 Screen-negative 50.6 47.0–54.1 Reference
a

Covariates included in multivariable model: sex, race and ethnicity, location, SES, and insurance.