Relative risk of autistic disorder or other autistic spectrum disorder in children who received the measles, mumps, and rubella vaccine v children who were unvaccinated*
| Outcomes | Adjusted relative risk (95% CI)* |
|---|---|
| *Adjusted for age, calendar period, sex, birth weight, gestational age, mother’s education, and socioeconomic status. | |
| Autistic disorder | 0.92 (0.68 to 1.24) |
| Other autistic spectrum disorder | 0.83 (0.65 to 1.07) |