{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T11:07:11Z","timestamp":1777547231282,"version":"3.51.4"},"reference-count":74,"publisher":"Oxford University Press (OUP)","issue":"1","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2015,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Objective Our aim was to evaluate the use and effectiveness of interventions using social networking sites (SNSs) to change health behaviors.<\/jats:p>\n               <jats:p>Materials and methods Five databases were scanned using a predefined search strategy. Studies were included if they focused on patients\/consumers, involved an SNS intervention, had an outcome related to health behavior change, and were prospective. Studies were screened by independent investigators, and assessed using Cochrane's \u2018risk of bias\u2019 tool. Randomized controlled trials were pooled in a meta-analysis.<\/jats:p>\n               <jats:p>Results The database search retrieved 4656 citations; 12 studies (7411 participants) met the inclusion criteria. Facebook was the most utilized SNS, followed by health-specific SNSs, and Twitter. Eight randomized controlled trials were combined in a meta-analysis. A positive effect of SNS interventions on health behavior outcomes was found (Hedges\u2019 g 0.24; 95% CI 0.04 to 0.43). There was considerable heterogeneity (I2 = 84.0%; T2 = 0.058) and no evidence of publication bias.<\/jats:p>\n               <jats:p>Discussion To the best of our knowledge, this is the first meta-analysis evaluating the effectiveness of SNS interventions in changing health-related behaviors. Most studies evaluated multi-component interventions, posing problems in isolating the specific effect of the SNS. Health behavior change theories were seldom mentioned in the included articles, but two particularly innovative studies used \u2018network alteration\u2019, showing a positive effect. Overall, SNS interventions appeared to be effective in promoting changes in health-related behaviors, and further research regarding the application of these promising tools is warranted.<\/jats:p>\n               <jats:p>Conclusions Our study showed a positive effect of SNS interventions on health behavior-related outcomes, but there was considerable heterogeneity.<\/jats:p>\n               <jats:p>Protocol registration The protocol for this systematic review is registered at http:\/\/www.crd.york.ac.uk\/PROSPERO with the number CRD42013004140.<\/jats:p>","DOI":"10.1136\/amiajnl-2014-002841","type":"journal-article","created":{"date-parts":[[2014,7,9]],"date-time":"2014-07-09T06:50:16Z","timestamp":1404888616000},"page":"243-256","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":550,"title":["The influence of social networking sites on health behavior change: a systematic review and meta-analysis"],"prefix":"10.1093","volume":"22","author":[{"given":"Liliana","family":"Laranjo","sequence":"first","affiliation":[{"name":"Portuguese School of Public Health, Universidade Nova de Lisboa, Lisbon, Portugal"}]},{"given":"Ama\u00ebl","family":"Arguel","sequence":"additional","affiliation":[{"name":"Centre for Health Informatics, Australian Institute of Health Innovation, University of New South Wales, Sydney, Australia"}]},{"given":"Ana L","family":"Neves","sequence":"additional","affiliation":[{"name":"Family Medicine Unit, Department of Social Sciences and Health, Faculty of Medicine, University of Porto, Porto, Portugal"}]},{"given":"Aideen M","family":"Gallagher","sequence":"additional","affiliation":[{"name":"UNSW Medicine, University of New South Wales, Sydney, Australia"}]},{"given":"Ruth","family":"Kaplan","sequence":"additional","affiliation":[{"name":"Royal Hospital for Women, Sydney, Australia"}]},{"given":"Nathan","family":"Mortimer","sequence":"additional","affiliation":[{"name":"UNSW Medicine, University of New South Wales, Sydney, Australia"}]},{"given":"Guilherme A","family":"Mendes","sequence":"additional","affiliation":[{"name":"ACES Estu\u00e1rio do Tejo, Lisbon, Portugal"}]},{"given":"Annie Y S","family":"Lau","sequence":"additional","affiliation":[{"name":"Centre for Health Informatics, Australian Institute of Health Innovation, University of New South Wales, Sydney, Australia"}]}],"member":"286","published-online":{"date-parts":[[2014,7,8]]},"reference":[{"key":"2020110613013587700_R1","first-page":"210","article-title":"Social network sites: definition, history, and scholarship","volume":"13","author":"Boyd","year":"2007","journal-title":"J Comput Commun"},{"key":"2020110613013587700_R2","article-title":"Social Media Update","author":"Pew Research Center","year":"2013"},{"key":"2020110613013587700_R3","article-title":"Social Networking Fact 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