title: [Evaluation of medical web sites. Interobserver and intraobserver reliability of an evaluation tool].
abstract: OBJECTIVE
  To develop and test the reliability of a tool for rating websites that provide information on evidence-based medicine.
  
  
  METHODS
  For each site, 60% of the score was given for content (eight criteria) and 40% was given for organization and presentation (nine criteria). Five of 10 randomly selected sites met the inclusion criteria and were used by three observers to test the accuracy of the tool. Each site was rated twice by each observer, with a 3-week interval between ratings.
  
  
  METHODS
  Laval University, Quebec city.
  
  
  METHODS
  Three observers.
  
  
  METHODS
  The intraclass correlation coefficient (ICC) was used to rate the reliability of the tool.
  
  
  RESULTS
  Average overall scores for the five sites were 40%, 79%, 83%, 88%, and 89%. All three observers rated the same two sites in fourth and fifth place and gave the top three ratings to the other three sites. The overall rating of the five sites by the three observers yielded an ICC of 0.93 to 0.97. An ICC of 0.87 was obtained for the two overall ratings conducted 3 weeks apart.
  
  
  CONCLUSIONS
  This new tool offers excellent intraobserver and interobserver measurement reliability and is an excellent means of distinguishing between medical websites of varying quality. For best results, we recommend that the tool be used simultaneously by two observers and that differences be resolved by consensus.
authors.affiliation: Département de médecine familiale à l'Université Laval au Québec. Pierre.Fremont@crchul.ulaval.ca
authors.forename: P
authors.initials: P
authors.lastname: Frémont
authors.forename: M
authors.initials: M
authors.lastname: Labrecque
authors.forename: F
authors.initials: F
authors.lastname: Légaré
authors.forename: L
authors.initials: L
authors.lastname: Baillargeon
authors.forename: L
authors.initials: L
authors.lastname: Misson
mesh_terms: D005069:Evaluation Studies as Topic; D006801:Humans; D007255:Information Services; D020407:Internet; D015588:Observer Variation; D011792:Quebec; D015203:Reproducibility of Results
vernacular_title: Evaluation des sites web médicaux. Fidélité interobservateur et intraobservateur d'un outil d'évaluation.