Skip to main content

Table 1 Demographic characteristics

From: Erratum: Evaluating a grading change at UCSD school of medicine: pass/fail grading is associated with decreased performance on preclinical exams but unchanged performance on USMLE step 1 scores

Description H/P/F Grading P/F Grading Total t‐ test
Mean   SD Mean   SD Mean   SD t‐ sta.s.c   p--‐ value
Number   243    117    360    -  
Sex (0 = Male, 1 = Female) 0.492   0.501 0.479   0.502 0.487   0.501 0.232   0.816
Age 23.34   3.10 22.94   2.76 23.21   2.99 1.192   0.234
In-state applicant (0 = No, 1 = Yes) 0.923   0.267 0.910   0.288 0.919   0.273 0.427   0.669
MCAT: Biological sciences 11.62   1.40 11.70   1.47 11.65   1.42 0.489   0.625
MCAT: Physical sciences 11.31   1.88 11.58   1.74 11.39   1.84 1.308   0.192
MCAT: Verbal 10.16   1.69 10.16   1.72 10.16   1.70 0.009   0.993
MCAT: Total 33.09   3.79 33.41   3.72 33.18   3.76 0.752   0.453
Medical school - First year exams 83.93   5.21 84.66   5.32 84.17   5.25 1.231   0.219
Medical school - Second year exams 82.28   5.17 81.41   4.93 82.00   5.10 1.518   0.130
USMLE - Step 1 score 229.95   18.86 231.72   18.01 230.54   18.57 0.844   0.399
Major: Biology 0.560   - 0.709   - 0.608   - -   -
Major: Chemistry 0.165   - 0.145   - 0.158   - -   -
Major: MECS 0.165   - 0.051   - 0.128   - -   -
Major: Non-Science 0.074   - 0.085   - 0.078   - -   -
Major: Missing 0.037   - 0.009   - 0.028   - -   -
  1. Notes and sources:
  2. Medical school exams represent the average exam score across a common set of exams.
  3. MECS stands for mathematical, engineering, & computer sciences.
  4. Mapping from undergraduate major to undergraduate major category are provided in Appendix 1.