title: Effect of presentation bias on selection of treatment option for failed endodontic therapy.
abstract: OBJECTIVE
  The purpose of the study was to determine if treatment option presentation bias affects decision making by patients when they have failed endodontic therapy.
  
  
  METHODS
  First-year dental students simulated the role of patients. All students were given the same scenario of a symptomatic tooth with failed endodontic therapy and asked to select from between 2 treatment options: nonsurgical endodontic retreatment or extraction and implant placement. One half of the students had characterizations of the treatment options biased toward nonsurgical retreatment, and the other half had characterizations of the treatment options biased toward extraction and implant selection. Statistical analysis was performed with chi-squared test.
  
  
  RESULTS
  Biased presentations significantly influenced the treatment selection by the students (P = .0006).
  
  
  CONCLUSIONS
  If treatment options are presented in a biased manner to favor one option, the patient is more likely to select that treatment option.
authors.affiliation: Division of Endodontics, University of Kentucky College of Dentistry, Lexington, KY 40536-0297, USA. kfost2@uky.edu
authors.forename: Keith H
authors.initials: KH
authors.lastname: Foster
authors.forename: Ershal
authors.initials: E
authors.lastname: Harrison
mesh_terms: D015982:Bias; D003657:Decision Making; D019232:Dental Restoration Failure; D004708:Endodontics / Q000193:education*; D005260:Female; D006801:Humans; D007258:Informed Consent; D008297:Male; D010358:Patient Participation; D019233:Retreatment; D012390:Root Canal Therapy / Q000523:psychology*; D013335:Students, Dental / Q000523:psychology; D014081:Tooth Extraction / Q000523:psychology*