title: Relationship between performance on the NBME Comprehensive Basic Sciences Self-Assessment and USMLE Step 1 for U.S. and Canadian medical school students.
abstract: BACKGROUND
  This study examined the relationship between performance on the National Board of Medical Examiners Comprehensive Basic Science Self-Assessment (CBSSA) and performance on United States Medical Licensing Examination Step 1.
  
  
  METHODS
  The study included 12,224 U.S. and Canadian medical school students who took CBSSA prior to their first Step 1 attempt. Linear and logistic regression analyses investigated the relationship between CBSSA performance and performance on Step 1, and how that relationship was related to interval between exams.
  
  
  RESULTS
  CBSSA scores explained 67% of the variation in first Step 1 scores as the sole predictor variable and 69% of the variation when time between CBSSA attempt and first Step 1 attempt was also included as a predictor. Logistic regression results showed that examinees with low scores on CBSSA were at higher risk of failing their first Step 1 attempt.
  
  
  CONCLUSIONS
  Results suggest that CBSSA can provide students with a realistic self-assessment of their readiness to take Step 1.
authors.affiliation: cmorrison@nbme.org
authors.forename: Carol A
authors.initials: CA
authors.lastname: Morrison
authors.forename: Linette P
authors.initials: LP
authors.lastname: Ross
authors.forename: Thomas
authors.initials: T
authors.lastname: Fogle
authors.forename: Aggie
authors.initials: A
authors.lastname: Butler
authors.forename: Judith
authors.initials: J
authors.lastname: Miller
authors.forename: Gerard F
authors.initials: GF
authors.lastname: Dillon
mesh_terms: D002170:Canada; D002983:Clinical Competence; D004504:Education, Medical, Undergraduate; D004521:Educational Measurement / Q000379:methods*; D004522:Educational Status; D006801:Humans; D008007:Licensure, Medical; D012044:Regression Analysis; D012586:Science / Q000193:education*; D012655:Self-Evaluation Programs; D014481:United States