Validation of the Fresno test of competence in evidence based medicine.
OBJECTIVE
To describe the development and validation of a test of knowledge and skills in evidence based medicine.


METHODS
Cross sectional study.


METHODS
Family practice residency programme in California; a list server for those who teach evidence based medicine; and an evidence based medicine seminar series.


METHODS
Family practice residents and faculty members (n=43); volunteers self identified as experts in evidence based medicine (n=53); family practice teachers (19) beginning a seminar series on evidence based medicine.


METHODS
The Fresno test is a performance based measure for use in medical education that assesses a wide range of evidence based medicine skills. Open ended questions are scored with standardised grading rubrics. Calculation skills are assessed by fill in the blank questions.


METHODS
Inter-rater reliability, internal reliability, item analyses, and construct validity.


RESULTS
Inter-rater correlations ranged from 0.76 to 0.98 for individual items. Cronbach's alpha was 0.88. Item difficulties ranged from moderate to difficult, all with positive and strong ability to discriminate between candidates. Experts scored consistently higher than novices. On the 212 point test, the novice mean was 95.6 and the expert mean was 147.5 (P<0.001). On individual items, a higher proportion of experts than novices earned passing scores on 15 of the 17 items.


CONCLUSIONS
The Fresno test is a reliable and valid test for detecting the effect of instruction in evidence based medicine. Its use in other settings requires further exploration.
Ramos
Kathleen D
KD
University of California San Francisco, Fresno Medical Education Program, Department of Family and Community Medicine, 445 South Cedar Avenue, Fresno, CA 93702, USA. katie.ramos@ucsfresno.edu
Schafer
Sean
S
Tracz
Susan M
SM
D002140:California; D002983:Clinical Competence / Q000592:standards*; D003430:Cross-Sectional Studies; D004502:Education, Medical, Continuing / Q000592:standards; D004521:Educational Measurement / Q000592:standards*; D019317:Evidence-Based Medicine; D005194:Family Practice / Q000592:standards*; D006801:Humans; D015588:Observer Variation; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity