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Table 5 Results from the Multinomial Logistic Regression analysis for block 4

From: Investigation of answer changes on the USMLE® Step 2 Clinical Knowledge examination

 

Variable

Coefficient Estimate

Std. Error

OR

95% Confidence Interval

P-value

W-R vs. R-W

log odds

Intercept

0.299

0.044

  

< 0.0001

Ability:

High vs. Low

0.226

0.046

1.25

1.15–1.37

< 0.0001

Medium vs. Low

0.103

0.046

1.11

1.01–1.21

0.026

R-R vs. R-W

log odds

Intercept

−2.830

0.125

  

< 0.0001

Ability:

High vs. Low

0.116

0.132

1.12

0.87–1.45

0.380

Medium vs. Low

0.032

0.134

1.03

0.79–1.34

0.809

W-W vs. R-W

log odds

Intercept

0.136

0.044

  

0.002

Ability:

High vs. Low

−0.491

0.048

0.61

0.56–0.67

< 0.0001

Medium vs. Low

−0.208

0.047

0.81

0.74–0.89

< 0.0001

  1. W-R wrong to right response changes, R-W right to wrong response changes, W-W wrong to wrong response changes, R-R right to right response changes