Social media (SM) is increasingly utilised to disseminate mental health (MH) public service announcements (PSAs) and campaigns, connecting the public with support or resources. However, the effectiveness of MH campaigns/PSAs is often overlooked, and actions following exposure are rarely measured. We aimed to i) systematically review research on MH campaigns/PSAs disseminated via SM to determine their efficacy in eliciting engagement, help-seeking/behavioural change and ii) identify components that may facilitate engagement, help-seeking/behavioural change. The review followed PRISMA guidelines. Fourteen studies were eligible. The campaigns/PSAs targeted various MH concerns and country dissemination was diverse. Twitter/X was the most prevalent SM platform (n = 11), followed by Facebook (n = 8). All campaigns/PSAs generated engagement although engagement level benchmarks were inconsistent or absent, a proportion measured formal help-seeking behaviours (n = 1) or behavioural/language/knowledge change (n = 8). Components influencing engagement included videos/live streams, relatable content, the organisation/account disseminating the content, how information was conveyed, and external events. We highlight the heterogeneity of research in SM MH campaign/PSA evaluation and identify commonalities across studies potentially responsible for eliciting engagement, behavioural change and/or help-seeking in future campaigns/PSAs.
Keywords: Campaign; Engagement; Help-seeking; Mental health; Public service announcement; Social media.
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