Biostatistics #4 - Interpreting a Risk ratio - USMLE Forums
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  #1  
Old 06-02-2011
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Stats Biostatistics #4 - Interpreting a Risk ratio

The relative risks found in the following Table were formed as the ratio of unadjusted inpatient mortality rates associated with two medical procedures in hospital A relative to hospital B.

table.bmp

Which one of the following is the most valid interpretation of these data?

A) The risk of mortality associated with coronary bypass surgery is approximately twice as great in hospital A as in hospital B, and this difference is statistically significant
B) The risk of death from Cesarean section differs little between hospitals, but the small difference is statistically significant
C) The RR of death from Cesarean section is twice as great in hospital B as in hospital A, and this difference is statistically significant
D) The P value suggest that the risk of death from Cesarean section is nearlt twice as important as that arising from coronary artery disease

Last edited by bebix; 06-02-2011 at 09:20 AM. Reason: spelling
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  #2  
Old 06-02-2011
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i think it is C
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  #3  
Old 06-02-2011
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Default C

I'l go with C
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  #4  
Old 06-02-2011
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sorry...I think is C)

Last edited by Claus_CU; 06-02-2011 at 02:02 PM. Reason: change answer
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  #5  
Old 06-02-2011
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CCCCCCCC!!!

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  #6  
Old 06-02-2011
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I think C too
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  #7  
Old 06-03-2011
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The correct answer is C)

I guess this was an easy one
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  #8  
Old 06-03-2011
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yes i will go with C
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  #9  
Old 02-01-2013
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Default p value

:sorry: i am new here and so far i like this forum,when is p value statistically significant,pls i need explanation
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  #10  
Old 02-01-2013
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p=0,05 or less
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  #11  
Old 02-02-2013
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Quote:
Originally Posted by BritneySpears View Post
p=0,05 or less
ok p = 0.05 means difference is significant..
and RR= 1/2 (A/B) means RR IN B is twice A.. am i correct??
plz correct me if i m wrong!
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  #12  
Old 12-11-2013
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why is it not a ?
p value =0.1 is significant as well bcos it is >0.05
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