Do digital innovations for HIV and sexually transmitted infections work? Results from a systematic review (1996-2017).

For social media-based campaigns, the two studies that did not reach statistical significance in reducing risky sexual behaviours lacked an interactive component and simply displayed educational material, while the study that showed significant effect engaged the participants by allowing them to contact professional cognitive behavioural therapists via live chat sessions. 103 105 117 In terms of quality, confounding and selection bias were noted in observational and quasi-experimental studies, and loss to follow-up in some trials.

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