Promoting child wellbeing necessarily goes beyond the clinic as risks to child health and development are embedded in the social and physical environmental conditions in which children live. Pediatricians play a vital role in promoting the health of children in the communities they serve and can maximize their impact by advocating for and supporting efficacious, evidence-based strategies in their communities. No individual study can definitively answer the question of a policy’s effectiveness across populations and time. Therefore, the accumulation of evidence and meta-analysis of outcomes across studies provides a more accurate assessment of effectiveness than a single study. Finally, the vast majority of studies were U.S.-based, and the results therefore are most applicable to U.S. context.