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  #1  
Old 08-22-2012
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Default Comparing response to treatment in AIDS pts

Investigators conduct a study comparing the response to highly active antiretroviral therapy (HAART) in men and women with acquired immunodeficiency syndrome (AIDS). Suppose that the study finds the relative risk for satisfactory clinical response in women compared with men to be 1.46 (95% CI: 0.842.66). What can be concluded about the difference in response to HAART between women and men with AIDS?

a) Apparently higher clinical response in women may be due to chance
b) Satisfactory clinical response in men is higher than in women
c) Satisfactory clinical response in women is higher than in men
d) Satisfactory clinical response in women is significantly higher than in men
e) Satisfactory clinical response is equal in women and men
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Old 08-23-2012
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i'll go with E
as the confidence interval includes 1.0 their satisfactory clinical response is same(not statistically significant).....if C.I doesn't include 1.0 and greater than1 then there is increased satisfactory clinical response ....and if it is less than 1 then there is decreased response

correct me ..as i'm not sure abt this
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Old 08-23-2012
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Default Agree with venky

Its E
If Confidence interval contain 1, then no statistical significant (means, at same risk.
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Old 08-23-2012
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Default correct answer

The answer is a) Apparently higher clinical response in women may be due to chance

Because the 95% confidence interval (CI) includes the value of 1.0, the investigators cannot exclude with 95% confidence the possibility that the risk ratio in the population is 1.0. This would mean that the risks for women and men are the same and that the apparently greater risk for women is due to chance.
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Old 08-23-2012
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Quote:
Originally Posted by Casandra View Post
The answer is a) Apparently higher clinical response in women may be due to chance

Because the 95% confidence interval (CI) includes the value of 1.0, the investigators cannot exclude with 95% confidence the possibility that the risk ratio in the population is 1.0. This would mean that the risks for women and men are the same and that the apparently greater risk for women is due to chance.
That means A and E are same but just explained different.?
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Old 08-23-2012
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Quote:
Originally Posted by Doc4Step1 View Post
That means A and E are same but just explained different.?
no. E is incorrect. please tell me which part of the stem confirms E?
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Old 08-23-2012
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errata: E is not accurate and that's why it's incorrect. we lack sufficient evidence to say they are the same.
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Old 08-23-2012
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Quote:
Originally Posted by Casandra View Post
errata: E is not accurate and that's why it's incorrect. we lack sufficient evidence to say they are the same.
Thanks...These kinda questions are sometimes so confusing that they all look the same.
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