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To summarize and critically appraise the existing evidence related to power mobility training methods used in research studies conducted with children 21 years or younger.A systematic review was conducted using 16 electronic databases to identify primary source quantitative studies published in peer-reviewed journals. Data extraction, determination of level of evidence, evaluation of methodological rigor, and assessment of the risk of bias were completed. The Evidence Alert Traffic Light Grading System (EATLS) was used.Twenty-seven studies were included in the review. Levels of evidence were II to V; scientific rigor scores were 2 to 7.An overall Yellow EATLS level of evidence was found indicating that therapists should use caution when providing power mobility training interventions and measure outcomes related to established goals in areas such as development, functional skills, or use of a power mobility device.