Physical Activity — The Causal Impact of Online Social Media on Physical Activity: A Randomized Controlled Trial
Citation(s)
Bennett GG, Glasgow RE The delivery of public health interventions via the Internet: actualizing their potential. Annu Rev Public Health. 2009;30:273-92. doi: 10.1146/annurev.publhealth.031308.100235. Review.
Centola D An experimental study of homophily in the adoption of health behavior. Science. 2011 Dec 2;334(6060):1269-72. doi: 10.1126/science.1207055.
Centola D The spread of behavior in an online social network experiment. Science. 2010 Sep 3;329(5996):1194-7. doi: 10.1126/science.1185231.
Cobb NK, Graham AL Health behavior interventions in the age of facebook. Am J Prev Med. 2012 Nov;43(5):571-2. doi: 10.1016/j.amepre.2012.08.001.
Eysenbach G, Powell J, Englesakis M, Rizo C, Stern A Health related virtual communities and electronic support groups: systematic review of the effects of online peer to peer interactions. BMJ. 2004 May 15;328(7449):1166. Review.
Korda H, Itani Z Harnessing social media for health promotion and behavior change. Health Promot Pract. 2013 Jan;14(1):15-23. doi: 10.1177/1524839911405850. Epub 2011 May 10. Review.
Strecher V Internet methods for delivering behavioral and health-related interventions (eHealth). Annu Rev Clin Psychol. 2007;3:53-76. Review.
Valle CG, Tate DF, Mayer DK, Allicock M, Cai J A randomized trial of a Facebook-based physical activity intervention for young adult cancer survivors. J Cancer Surviv. 2013 Sep;7(3):355-68. doi: 10.1007/s11764-013-0279-5. Epub 2013 Mar 27.
The Causal Impact of Online Social Media on Physical Activity: A Randomized Controlled Trial
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
