TABLE 5.
Associations Between ASD Diagnosis and M-CHAT Completion or M-CHAT Screen-Positive
| Characteristic | ASD n (%) | No ASD n (%) | Univariable analyses | Multivariable Analysesa | ||||
|---|---|---|---|---|---|---|---|---|
| PR | 95% CI | P | APR | 95% CI | P | |||
| M-CHAT completion | ||||||||
| Screened | 378 (1.4) | 25 986 (98.6) | 0.90 | 0.73–1.10 | .29 | 0.87 | 0.69–1.10 | .25 |
| Not screened | 144 (1.5) | 9715 (98.5) | Reference | — | — | — | — | — |
| M-CHAT result | ||||||||
| Screen-positive | 125 (17.8) | 579 (82.2) | 19.0 | 15.2–23.8 | <.001 | 17.0 | 13.1–22.0 | <.001 |
| Screen-negative | 253 (1.0) | 25 407 (99.0) | Reference | — | — | — | — | — |
| M-CHAT | ||||||||
| Screen-positive | 125 (17.8) | 579 (82.2) | 11.4 | 8.8–14.9 | <.001 | 10.3 | 7.6–14.1 | <.001 |
| Not screened | 144 (1.5) | 9715 (98.5) | Reference | — | — | — | — | — |
PR, prevalence ratio; —, not applicable.
a
Covariates included in multivariable model: sex, race and ethnicity, location, SES, insurance.