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About this talk



EA Global: London 2019

Mass media can reach millions of people, but can it improve health and save lives as effectively as other top interventions? Past studies of mass-media campaigns for public health failed to find evidence of strong impact, belying the potential of the medium. In this talk, Roy Head, CEO of Development Media International (DMI), discusses the randomized controlled trial DMI ran on its own health campaign — and the surprising results.