Table 3 Multiple linear regression analysis examining the relationship between USMLE Step 1 scores and the listed predictors
Variable | Dependent variable: USMLE step 1 score | |||
|---|---|---|---|---|
(1) | (2) | (3) | (4) | |
P/F grading | 1.572 | 2.810 | ||
Score difference (Year 2 minus Year 1) | 0.738*** | 0.822*** | ||
(0.283) | (0.293) | |||
Sex (1 = female, 0 = male) | -3.184* | -3.130* | -3.456* | -3.389* |
(1.769) | (1.773) | (1.765) | (1.767) | |
Age | -0.526 | -0.519 | -0.618* | -0.615* |
(0.323) | (0.321) | (0.331) | (0.329) | |
In-state applicant (1 = yes, 0 = no) | -2.764 | -2.735 | -2.565 | -2.490 |
(3.008) | (3.035) | (2.950) | (2.993) | |
MCAT: Biological sciences | 4.274*** | 4.301*** | 4.489*** | 4.562*** |
(0.818) | (0.822) | (0.805) | (0.812) | |
MCAT: Physical sciences | 1.006* | 0.967* | 1.194** | 1.147** |
(0.571) | (0.579) | (0.571) | (0.578) | |
MCAT: Verbal reasoning | 1.731*** | 1.747*** | 1.477** | 1.477** |
(0.594) | (0.595) | (0.606) | (0.607) | |
Undergraduate GPA - Science | 11.59*** | 11.49*** | 11.34*** | 11.13*** |
(4.272) | (4.288) | (4.260) | (4.279) | |
Major: Chemistry | 3.684 | 3.822 | 3.138 | 3.324 |
(2.456) | (2.441) | (2.538) | (2.514) | |
Major: MECS | 3.431 | -3.045 | -3.279 | -2.572 |
(3.174) | (3.216) | (3.165) | (3.208) | |
Major: Other | 1.619 | -1.646 | -2.478 | -2.623 |
(3.201) | (3.217) | (3.176) | (3.197) | |
Constant | 125.1*** | 124.7*** | 127.7*** | 127.3*** |
(18.51) | (18.39) | (18.74) | (18.62) | |
Observa_ons | 298 | 298 | 298 | 298 |
R-squared | 0.330 | 0.332 | 0.347 | 0.351 |