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Prevalence and Associations

Megan A. Moreno, MD, MSEd, MPH; Malcolm R. Parks, PhD; Frederick J. Zimmerman, PhD; Tara E. Brito; Dimitri A. Christakis, MD, MPH

Arch Pediatr Adolesc Med. 2009;163(1):27-34.

Objective  To determine the prevalence of and associations among displayed risk behavior information that suggests sexual behavior, substance use, and violence in a random sample of the self-reported 18-year-old adolescents' publicly accessible MySpace Web profiles.

Design  Cross-sectional study using content analysis of Web profiles between July 15 and September 30, 2007.

Setting  www.MySpace.com.

Participants  A total of 500 publicly available Web profiles of self-reported 18-year-olds in the United States.

Main Outcome Measures  Prevalence and associations among displayed health risk behaviors, including sexual behavior, substance use, or violence, on Web profiles.

Results  A total of 270 (54.0%) profiles contained risk behavior information: 120 (24.0%) referenced sexual behaviors, 205 (41.0%) referenced substance use, and 72 (14.4)% referenced violence. Female adolescents were less likely to display violence references (odds ratio [OR], 0.3; 95% confidence interval [CI], 0.15-0.6). Reporting a sexual orientation other than "straight" was associated with increased display of references to sexual behavior (OR, 4.48; 95% CI, 1.27-15.98). Displaying church or religious involvement was associated with decreased display of all outcomes (sex: OR, 0.32; 95% CI, 0.12-0.86; substance use: OR, 0.38; 95% CI, 0.19-0.79; violence: OR, 0.12; 95% CI, 0.02-0.87; any risk factor: OR, 0.36; 95% CI, 0.19-0.7). Displaying sport or hobby involvement was associated with decreased references to violence (OR, 0.27; 95% CI, 0.09-0.79) and any risk factor (OR, 0.46; 95% CI, 0.27-0.79).

Conclusions  Adolescents frequently display risk behavior information on public Web sites. Further study is warranted to explore the validity of such information and the potential for using social networking Web sites for health promotion.

Author Affiliations: Departments of Pediatrics (Drs Moreno, Zimmerman, and Christakis), Communication (Dr Parks), and Health Services (Drs Zimmerman and Christakis), Section of Adolescent Medicine (Dr Moreno), and Child Health Institute (Drs Moreno, Zimmerman, and Christakis), University of Washington, Seattle, Washington (Dr Moreno), and Seattle Children's Hospital Research Institute (Drs Moreno, Zimmerman, and Christakis), Seattle; and University of Notre Dame, Notre Dame, Indiana (Ms Brito).

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