title: Problem-based learning outcomes: the glass half-full.
abstract: OBJECTIVE
  To compare the characteristics and outcome data of students from a single institution with a two-track, problem based learning (PBL) and standard (STND) curriculum.
  
  
  METHODS
  PBL and STND students from nine graduating classes at Southern Illinois University School of Medicine were compared using common medical school performance outcomes (USMLE Step 1, USMLE Step 2, clerkship mean ratings, number of clerkship honors and remediation designations, and the senior clinical competency exam), as well as common admission and demographic variables.
  
  
  RESULTS
  PBL students were older, and the cohort had a higher proportion of women. The two tracks had similar USMLE Step 1 and 2 mean scores and pass rates. Performance differences were significant for PBL students in two clerkships as well as in the clerkship subcategories of clinical performance, knowledge and clinical reasoning, and noncognitive behaviors. In addition, the proportion of PBL students earning honors was greater.
  
  
  CONCLUSIONS
  The traditional undergraduate educational outcomes for the PBL and STND students are very positive. In several of the clerkship performance measures, the PBL students performed significantly better, and in no circumstance did they perform worse than the STND students.
authors.affiliation: Department of Medical Education, Southern Illinois University School of Medicine, PO Box 19681, Springfield, IL 62794-9681, USA. ldistlehorst@siumed.edu
authors.forename: Linda H
authors.initials: LH
authors.lastname: Distlehorst
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Dawson
authors.forename: Randall S
authors.initials: RS
authors.lastname: Robbs
authors.forename: Howard S
authors.initials: HS
authors.lastname: Barrows
mesh_terms: D000328:Adult; D000367:Age Factors; D002983:Clinical Competence; D015331:Cohort Studies; D004504:Education, Medical, Undergraduate / Q000379:methods*; D005260:Female; D006801:Humans; D007087:Illinois; D008297:Male; D018794:Problem-Based Learning / Q000458:organization & administration; D016730:Program Development; D015397:Program Evaluation; D012189:Retrospective Studies; D012577:Schools, Medical / Q000458:organization & administration; D012737:Sex Factors