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  #1  
Old 06-27-2012
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Stats Cancer screening least affected by bias!

A randomized clinical trial is conducted to determine if screening for lung cancer with high-resolution CT will improve patient
outcomes.
Which of the following cancer screening end points is least affected by bias?

(A) Case-fatality ratio
(B) Incidence of early-stage cancer
(C) Incidence of late-stage cancer
(D) Lung cancer-specific mortality
(E) Survival of patients diagnosed with cancer
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  #2  
Old 06-27-2012
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A? i dont know. I hate bioststs
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I've become so numb
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  #3  
Old 06-27-2012
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i would choose D
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  #4  
Old 06-27-2012
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Post D :)

B- wud increase
C- wud decrease coz we already hav them at an earlier stage
E- wud increase too ,thats the whole point of lead time bias...

between A and D... D wudnt change for sure,
but cannot reason for why A wud change...
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Old 06-27-2012
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i guess D........
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Old 06-28-2012
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Would go for D by diagnosis of exclusion!
Please post answer + Explanation. #killbiostats
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  #7  
Old 07-01-2012
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@tyagee - what is the answer?
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Old 07-01-2012
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Quote:
Originally Posted by Casandra View Post
@tyagee - what is the answer?
Ans is a. I don't know why
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Old 07-01-2012
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Quote:
Originally Posted by tyagee View Post
Ans is a. I don't know why
...i hate this subject
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  #10  
Old 07-01-2012
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Quote:
Originally Posted by anomali View Post
...i hate this subject
Same thing here
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  #11  
Old 07-07-2012
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(A) Case-fatality ratio
because it is a ratio. Any bias would affect both the numerator and denominator equally.
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  #12  
Old 07-08-2012
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Quote:
Originally Posted by Novobiocin View Post
(A) Case-fatality ratio
because it is a ratio. Any bias would affect both the numerator and denominator equally.
rest of the things are also ratio
infact epidemiology is all about ratio
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  #13  
Old 07-09-2012
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Quote:
Originally Posted by tyagee View Post
rest of the things are also ratio
infact epidemiology is all about ratio
True, thats the opening line of the entire epidemiology
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