{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,1]],"date-time":"2026-08-01T00:44:15Z","timestamp":1785545055819,"version":"3.56.0"},"reference-count":81,"publisher":"JMIR Publications Inc.","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JMIR Form Res"],"abstract":"Abstract<\/jats:title>\n \n Background<\/jats:title>\n Web-based interventions present an opportunity for addressing reproductive health outcomes among young Francophone West Africans, but little is known about how social media use impacts such interventions.<\/jats:p>\n <\/jats:sec>\n \n Objective<\/jats:title>\n This study aimed to identify social media use patterns among young French-speaking West Africans and assess the impact on a reproductive health intervention delivered on Facebook.<\/jats:p>\n <\/jats:sec>\n \n Methods<\/jats:title>\n French-speaking social media users (aged 15\u201024 years) were recruited from Senegal, C\u00f4te d\u2019Ivoire, and Burkina Faso via social media advertisements. Using a factorial design for a multiarm parallel study, participants were randomly assigned via block randomization to 4 conditions: comparison (standard content), peer role models (personal narratives from similarly aged peers), online influencers (popular online figures), and a mixed peer role model and online influencer strategy. Participant blinding was implemented. Respondents completed pre- and post- self-administered online surveys between December 2023 and February 2024. Latent class analysis using maximum likelihood estimation was used to examine social media use patterns and related outcomes: contraceptive knowledge, provider awareness, and online service use.<\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n \n In total, 353 participants were randomized to each group, with a final analytic sample of 262 participants. Two social media user types were identified from the completed study: selective users (daily use of WhatsApp and Facebook) and multiplatform users (daily use of WhatsApp, Facebook, Instagram, YouTube, and TikTok). Being 20-24 years old, compared with 15\u201019 years, was associated with increased odds of multiplatform use (odds ratio [OR] 3.61, 95% CI 1.46\u20109.36;\n P<\/jats:italic>\n =.008). Furthermore, residing in Senegal was associated with a greater likelihood of multiplatform use, compared with C\u00f4te d\u2019Ivoire (OR 0.27, 95% CI 0.08\u20100.88;\n P<\/jats:italic>\n =.03) and Burkina Faso (OR 0.23, 95% CI 0.07\u20100.76;\n P<\/jats:italic>\n =.02). Among selective users (daily users of WhatsApp and Facebook), the peer role model approach demonstrated a 1.84-unit increase in contraceptive knowledge (OR 1.84, 95% CI 0.27\u20103.41;\n P<\/jats:italic>\n =.02), a 1.81-unit increase in provider awareness (OR 1.81, 95% CI 1.15\u20102.47;\n P<\/jats:italic>\n <.001), and a 1.49-unit increase in service use (OR 1.49, 95% CI 0.06\u20102.93;\n P<\/jats:italic>\n =.04), compared with the comparison group. For multiplatform users, the peer role model approachwas associated with a decrease in provider awareness (OR 0.33, 95% CI \u22120.64 to \u22120.01;\n P<\/jats:italic>\n =.04). Unlike the peer role model approach (n=70), generally, online influencer (n=63) and mixed approaches (n=57) did not yield significant outcomes, relative to the comparison group (n= 72). There were no adverse events reported.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n This study applies latent class analysis in a novel way for this population: examining how a comprehensive measure of social media use moderates digital interventions. This approach is underused in other social media studies in sub-Saharan Africa. Findings suggest that a one-size-fits-all approach in web-based interventions is not ideal, and online peer-to-peer communication is still an important strategy for certain social media users.<\/jats:p>\n <\/jats:sec>","DOI":"10.2196\/83562","type":"journal-article","created":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T19:21:33Z","timestamp":1784834493000},"page":"e83562-e83562","source":"Crossref","is-referenced-by-count":0,"title":["Examining Social Media User Types and the Impact on a Reproductive Health Web-Based Intervention for Young People in Francophone West Africa: Randomized Factorial Design Using Latent Class Analysis"],"prefix":"10.2196","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5973-0177","authenticated-orcid":false,"given":"Leona M","family":"Ofei","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-8359-7237","authenticated-orcid":false,"given":"Nikolas","family":"Wianecki","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0346-4030","authenticated-orcid":false,"given":"Kyeongwon","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6150-2181","authenticated-orcid":false,"given":"Catherine","family":"Crespi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Deffa","family":"Wane","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rabiatou","family":"Sangare","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexandre","family":"Rideau","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mbathio","family":"Diaw","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0577-8618","authenticated-orcid":false,"given":"Philip M","family":"Massey","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1010","published-online":{"date-parts":[[2026,7,23]]},"reference":[{"key":"R1","unstructured":"Fact sheet: investing in sexual and reproductive health in Western Africa. 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