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Table 7 Response change patterns and outcomes for block 8

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

  Number of examinees % (Based on all examinees) % (Based on examinees with response change)
Examinees who revisited at least one item 27,521 99.0%  
Examinees who changed at least one response 19,178 68.9% 100.0%
Examinees with score gain 8742 31.4% 45.6%
Examinees with score loss 5142 18.5% 26.8%
Examinees with unchanged score 5294 19.0% 27.6%
  Mean number of items % (Based on all items) % (Based on items with revisits)
Items with revisits 15.8 35.9% 100.0%
Items with revisits and no response change 14.4 32.7% 91.1%
Items with revisits and response change 1.4 3.2% 8.9%
W-R 0.60   
R-W 0.40   
R-R 0.03   
W-W 0.39   
W-R/R-W ratio 0.60/0.40 = 1.50   
Overall mean score change 0.005   
  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