title: Assessment of a surgical pattern recognition examination.
abstract: BACKGROUND
  Recent cognitive research in medicine has demonstrated that expert diagnosticians solve many clinical problems through "pattern recognition" rather than deductive reasoning strategies. Development of the ability to recognize and diagnose common surgical problems is a critical objective of undergraduate surgical education. A surgical pattern recognition examination (PAT) was developed to assess surgical diagnosis recognition in clerkship students.
  
  
  METHODS
  Surgical faculty selected 18 diagnoses for 20 possible presenting complaints (eg, leg pain, soft tissue mass). A distinctive patient description was written for each diagnosis. An examination of 200 items was compiled covering 20 presenting complaints.
  
  
  RESULTS
  The PAT was administered to clerkship students during the 1992-1993 academic year (n = 77). PAT scores ranged from 33% to 90% with a mean of 65% (SD = 12.7). PAT scores correlated highly with the National Board of Medical Examiners (NBME) Surgery Subject Examination (SSE) scores. The validity of the examination was assessed by a speeded administration of the exam to surgical house staff. Senior residents scored significantly higher than junior residents (mean 82% versus 63%, P = 0.004). Performance on the PAT was significantly affected by the order of the student rotation in the academic year (P = 0.02) while performance on the NBME SSE was not (P = 0.40), which is consistent with diagnostic ability improving with clinical experience.
  
  
  CONCLUSIONS
  The surgical PAT examination is a new, reliable, and valid method for assessing diagnostic ability in third-year students.
authors.affiliation: Department of Surgery, Wright State University School of Medicine, Dayton, Ohio.
authors.forename: M M
authors.initials: MM
authors.lastname: Dunn
authors.forename: J O
authors.initials: JO
authors.lastname: Woolliscroft
mesh_terms: D002982:Clinical Clerkship; D003949:Diagnostic Techniques, Surgical / Q000379:methods*; D004521:Educational Measurement; D005069:Evaluation Studies as Topic; D013502:General Surgery / Q000193:education*; D010364:Pattern Recognition, Visual; D015203:Reproducibility of Results