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Study Characteristics

CitationSettingMajority Age GroupMajority Racial/Ethnic GroupGenderSample Size

Villarruel et al. 2006

After school/Community based14 to 17LatinoBoth684

Mueller et al. 2009


Larson et al. 2014


Abt Associates 2015c

Kelsey et al. 2016a

Kelsey et al. 2016b

After school/Community based14 to 17LatinoBoth2,022

Serowoky et al. 2015



Some study entries may include more than one citation because each citation examines a different follow-up period from the same study sample, or because each citation examines a different set of outcome measures on the same study sample.

Information on study characteristics is available only for studies that received a high or moderate rating. Read the description of the review process for more information on how these programs are identified.