Table 1.
Characteristics of Included Studies
| Study (First Author, Year) | Study Design | Country | Settings | Participants (Training Recipients) | Number of Participants | Number of Patients Assessed by PCPs |
| Warren, 2009 | NRT | United States | Community pediatric clinics in underserved geographic areas | General pediatricians | 5 | 25 |
| McClure, 2010 | NRT | Scotland | Community clinics in the health region of Lomond and Argyll | General pediatricians, SLP, and psychologists | 16 | 39 |
| Swanson, 2013 | NRT | United States | Community clinics in different geographic regions | General pediatricians | 27 | 14 |
| Harrison, 2017 | Pre-post | United States | Behavioral/developmental access clinic within a tertiary care children's hospital | General pediatrician | 1 | 63 |
| Mazurek, 2018 | Pre-post | United States | Community clinics in different geographic regions | General pediatrician, family physician, and nurse practitioner | 18 | 47 |
| Ahlers, 2019 | NRT | United States | University developmental assessment clinics associated with the University of UT | General pediatricians with advanced training in ASD | Not reported | 91 |
ASD, autism spectrum disorder; NRT, nonrandomized trial study design; PCPs, primary care providers; SLP, speech language pathologist.