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  #1  
Old 09-04-2009
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Stats USMLE Step 1 Questions Distribution - Percentage of each Subject

What percentage anatomy, physiology, pathology, biochemistry, etc questions in USMLE Step 1?

Examining Kaplan qbank, USMLERx, USMLE CD, NBME Form 1 and making out the subject percentages in each and then averaging the results came up with the following table;
click on thumbnail to enlarge

USMLE Step 1 Questions Distribution - Percentage of each Subject-qs-distribution.jpg
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Or this pie chart

USMLE Step 1 Questions Distribution - Percentage of each Subject-qs-pie-percentages.jpg
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See also;
USMLE Step 2 CK Questions Distribution

Last edited by StepTaker; 06-06-2010 at 10:33 AM. Reason: Linking to CK distribution
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  #2  
Old 09-04-2009
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They always tell me that Pathology is so important but after looking at your pie chart now I can really understand why we should master and not only rely on Kaplan
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  #3  
Old 09-21-2009
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can we rely on this for the exam? or is it just a guess? isnt there an official distribution available somewhere? that would be nice.

anyhow you guys think kaplan is not enough on pathology?
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  #4  
Old 09-21-2009
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Quote:
Originally Posted by charlie View Post
can we rely on this for the exam? or is it just a guess? isnt there an official distribution available somewhere? that would be nice.

anyhow you guys think kaplan is not enough on pathology?
I've been trying to find an official documentation of the question percentages and could not find one. That's why I examined those qbanks. However, I believe that USMLE CD and NBME are kind of "official" real samples of the real exam and these percentage should be correct.

Having said that, don't forget there are significant variations in allocating a certain question to a specific discipline. More and more questions are now going "multi-system" and it's impossible to say whether this question should count toward physiology, or biochemistry for example.

More over, the categorization of your study materials may differ from provider to another. For example, what a specific First Aid topic included in anatomy may be seen in the pathology book of Kaplan. So those of course complicates the calculation.

In general, you can rely on the above chart to get a sense of the weight of each discipline, like for example it might be argued that you can pass the exam without reading the behavioral sciences or you will master a significant percentage of exam questions if you master patho and physion ...etc
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  #5  
Old 09-21-2009
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you see, i got something like 70% on the qbank on random mixed questions, however some are known so you cannot be totally confident about the number. but still I have some weak spots on microbiology, biochemistry and stuff and wonder if it will be enough to take the exam. however according to the chart the share for micro and biochem seems rather slim.

regards
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  #6  
Old 09-23-2009
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In my exam there was more than 5% behavior and biostat
so I think it varies from exam to exam and from student to student
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  #7  
Old 09-26-2009
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This USMLE website page
http://www.usmle.org/General_Informa...8/content.html

has all the various weight percentages that you need and no need for the time you wasted calculating these ratios!
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  #8  
Old 09-26-2009
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Quote:
Originally Posted by abusmle View Post
This USMLE website page
http://www.usmle.org/General_Informa...8/content.html

has all the various weight percentages that you need and no need for the time you wasted calculating these ratios!
That page does not tell the percentages of each subject
It just gives a general outline of the content
Perhaps the only good info in it is that therapeutics constitutes 15-25% of the content (note that therapeutics does not mean only pharmacology but rather it means any treatment info for any abnormal process, such information can be found in pathology, microbiology, biochemistry, etc virtually all subjects contain therapeutic info) so yet again the percentages that I came up with still prove useful for step 1 preparation.

Last edited by StepTaker; 09-26-2009 at 03:17 PM.
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  #9  
Old 11-08-2009
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Do you have any idea about the systems distribution
I mean what percentage cardiovascular, respiratory, ..etc
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  #10  
Old 11-08-2009
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Quote:
Originally Posted by 473-syndrome View Post
Do you have any idea about the systems distribution
I mean what percentage cardiovascular, respiratory, ..etc
Unfortunately, No, I did not measure the systems distribution
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  #11  
Old 04-06-2010
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Hi,Steptaker, what about for Step 2CK ?
__________________
If you have good things, please do share with everyone.
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  #12  
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Default CK distribution is obvious

Quote:
Originally Posted by wahaha007 View Post
Hi,Steptaker, what about for Step 2CK ?
I did not work out the percentages for the CK exam. I was thinking it's pretty obvious that Internal Medicine makes the biggest chunk followed by pediatrics followed by the other three (obgyn, psych/stats/ethics, and surgery).

However, since you asked I may put a similar thread for the CK distribution.
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  #13  
Old 04-06-2010
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In my humble opinion, despite any ambitious & well-intentioned efforts, it is eventually difficult to estimate the "percentage" of each system or subject, even if these efforts are based on statistical correlations & regression analyses. The reason is that, in their majority, the questions of the actual exam concern interdisciplinary concepts. What is more, sometimes it is not easy to tell apart which different concepts or domains a question integrates.
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  #14  
Old 04-06-2010
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Quote:
Originally Posted by ath.pantelis View Post
In my humble opinion, despite any ambitious & well-intentioned efforts, it is eventually difficult to estimate the "percentage" of each system or subject, even if these efforts are based on statistical correlations & regression analyses. The reason is that, in their majority, the questions of the actual exam concern interdisciplinary concepts. What is more, sometimes it is not easy to tell apart which different concepts or domains a question integrates.
I totally agree with you and this is what I explained in this post above
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  #15  
Old 07-27-2011
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Question General principles or organ system

Which one has higher percentage of the questions in step 1: pure general principles or organ systems questions?

I am worried about the general principles (ie: part in FA and Kaplan) since my uni followed PBL system and starting year 1 we went into organ system directly, we only spent 2months on few shallow basics. I am really worried about pure basics of biochem, micro, & immunology !!!
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  #16  
Old 07-29-2011
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can you post the recent 2011 que distributions....dis one is like 2 yrs old...thanx
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  #17  
Old 09-20-2011
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one of my colleagues who gave step 1 in 2006 told me in his exam there were 70% pathology questions and only 5% biochem and pharmacology
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  #18  
Old 02-01-2012
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Default Pathophysiology?

Heya mates,
So what exactly does "Pathophysiology" here imply? I mean isn't that an inter-disciplinary entity?
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  #19  
Old 02-04-2012
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Is it still the same?
Becuase I have been hearing from some students Anat is not alot anymore... or Biochem isnt.. Different things from different people who took it.
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  #20  
Old 04-27-2012
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Default patho it is!

Quote:
Originally Posted by sukar View Post
Is it still the same?
Becuase I have been hearing from some students Anat is not alot anymore... or Biochem isnt.. Different things from different people who took it.
i gave step 1 on last day of december 2011, yes they dont ask anatomy much, but there were many questions from biochem, just cram the diseases in biochem section of first aid . and i dnt remmber if there were any questions from genetics or cell biology (thou it took me much time preparing them).
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  #21  
Old 04-27-2012
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Default pathophysiology...

Quote:
Originally Posted by DNA 105 View Post
Heya mates,
So what exactly does "Pathophysiology" here imply? I mean isn't that an inter-disciplinary entity?
there are no pure or direct physio questions, they give u clinical senarios and u hav to shake ur brains to make a full diagnosis and then answer if they are asking sum normal physiological process which is disrupted in the said patient or the pathogenesis of disease, i wud say dont do multiple readings of physio rather try to do as many MCQs as u can it will help u in making reflexing of answering within seconds
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  #22  
Old 05-03-2012
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still valid chart?
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  #23  
Old 05-05-2012
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Default 2012 Update

Here is the content description right from the USMLE website for USMLE 2012.




Also includes:
Sample questions
Content outlines
Normal values!!!!
Answer Forms & Answer Keys.

Hope that helps.
Attached Files
File Type: pdf 2012content_step1.pdf (1.32 MB)
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  #24  
Old 10-17-2012
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good and thank you
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  #25  
Old 12-03-2012
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Quote:
Originally Posted by kish180 View Post
still valid chart?
I was wondering the same ?????
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  #26  
Old 04-12-2016
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thank you .....
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  #27  
Old 06-10-2016
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excellent resource. hope chart is accurate
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  #28  
Old 10-15-2016
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Default Now

What about question distribution these days?
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