title: Search query data to monitor interest in behavior change: application for public health.
abstract: There is a need for effective interventions and policies that target the leading preventable causes of death in the U.S. (e.g., smoking, overweight/obesity, physical inactivity). Such efforts could be aided by the use of publicly available, real-time search query data that illustrate times and locations of high and low public interest in behaviors related to preventable causes of death.
  
  
  OBJECTIVE
  This study explored patterns of search query activity for the terms 'weight', 'diet', 'fitness', and 'smoking' using Google Insights for Search.
  
  
  METHODS
  Search activity for 'weight', 'diet', 'fitness', and 'smoking' conducted within the United States via Google between January 4(th), 2004 (first date data was available) and November 28(th), 2011 (date of data download and analysis) were analyzed. Using a generalized linear model, we explored the effects of time (month) on mean relative search volume for all four terms.
  
  
  RESULTS
  Models suggest a significant effect of month on mean search volume for all four terms. Search activity for all four terms was highest in January with observable declines throughout the remainder of the year.
  
  
  CONCLUSIONS
  These findings demonstrate discernable temporal patterns of search activity for four areas of behavior change. These findings could be used to inform the timing, location and messaging of interventions, campaigns and policies targeting these behaviors.
authors.affiliation: Department of Health and Human Physiology, University of Iowa, Iowa City, IA, USA. lucas-carr@uiowa.edu
authors.forename: Lucas J
authors.initials: LJ
authors.lastname: Carr
authors.forename: Shira I
authors.initials: SI
authors.lastname: Dunsiger
mesh_terms: D004032:Diet; D015438:Health Behavior; D010809:Physical Fitness; D011634:Public Health / Q000379:methods*; D012907:Smoking