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Hey guys, I was curious about Usmle World and Step 1 correlation so I went ahead and collected my own data and correlation.

(See attached PDF for proper formatting)

Results:

UW S1

Min 55 210

Mean 71 240

Max 87 269

Std. Dev 7.52 14.41

Uploaded with ImageShack.us

Regression Line is solid line. 95% prediction band is dotted lines.

Slope: 1.455 ± 0.2170

Y-intercept: 136.9 ± 15.49

R2 = 0.58

Pearsons p < 0.01

Hope this helps!

(See attached PDF for proper formatting)

**Purpose:**Many students are interested in knowing the correlation between USMLE World (UW) qbank scores and what they would get on the step 1 (S1). At the moment there is only one online tool that supposedly does this but it sucks so I went ahead and got my own data.**Method:**Since 2004, IMGs have been on a thread in the prep4usmle website regarding their S1 results. To date there are 993 posts. Between 1/7/2010 and 4/6/2011, 35 people made posts that contained both their S1 and UW. I included only posts that stated that these UW scores were from first time random passes or posts that did not comment on the method of going through UW.Results:

UW S1

Min 55 210

Mean 71 240

Max 87 269

Std. Dev 7.52 14.41

Uploaded with ImageShack.us

Regression Line is solid line. 95% prediction band is dotted lines.

Slope: 1.455 ± 0.2170

Y-intercept: 136.9 ± 15.49

R2 = 0.58

Pearsons p < 0.01

**Conclusion:**There is a linear correlation between UW and S1 between the step 1 range of 210 and 269. UW can estimate S1 with an 95% prediction interval of about ±20 points.Hope this helps!

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