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Comparison of Research Designs for Two Controlled Trials of Mass Media Interventions
This paper compares two controlled trials of mass media interventions, factors influencing their designs, and design lessons learned from these experiences. Mass media evaluations based on a scientific research model are motivated by gaps in knowledge. The results of such research are intended to se...
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| Auteurs principaux: | , , |
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| Format: | Artigo |
| Langue: | Inglês |
| Publié: |
2009
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| Sujets: | |
| Accès en ligne: | https://ncbi.nlm.nih.gov/pmc/articles/PMC2716042/ https://ncbi.nlm.nih.gov/pubmed/20046992 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1080/19312450902809490 |
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