Biostatistics #17 - RR and Attributable risk - USMLE Forums
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Old 06-10-2011
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Stats Biostatistics #17 - RR and Attributable risk

Bladder Cancer rates in Cigarette Smokers and Nonsmokers:

Cigarette Smokers:.....48.0 Bladder cancer per 100,000 males
Nonsmokers:..............25.4 Bladder cancer per 100,000 males


1. The relative risk of developing bladder cancer for male cigarette smokers compared with male nonsmokers is
a. 48.0
b. 48.0 - 25.4 = 22.6
c. 48.0/25.4 = 1.89
d. [48.0 - 25.4]/48.0
e. cannot be computed from the data given

2. The attributable risk of bladder cancer due to cigarette smoking in male cigarette smokers is
a. 48.0/25.4 = 1.89
b. 48.0 - 25.4 = 22.6 per 100,000
c. 48.0
d. 48.0/100,000 = 0.00048
e. cannot be computed from these data

Last edited by bebix; 06-10-2011 at 06:07 AM.
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Old 06-10-2011
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1 - c
2 - b
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Old 06-10-2011
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1. C
2. B
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Old 06-10-2011
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Quote:
Originally Posted by bebix View Post
Bladder Cancer rates in Cigarette Smokers and Nonsmokers:

Cigarette Smokers:.....48.0 Bladder cancer per 100,000 males
Nonsmokers:..............25.4 Bladder cancer per 100,000 males


1. The relative risk of developing bladder cancer for male cigarette smokers compared with male nonsmokers is
a. 48.0
b. 48.0 - 25.4 = 22.6
c. 48.0/25.4 = 1.89
d. [48.0 - 25.4]/48.0
e. cannot be computed from the data given

2. The attributable risk of bladder cancer due to cigarette smoking in male cigarette smokers is
a. 48.0/25.4 = 1.89
b. 48.0 - 25.4 = 22.6 per 100,000
c. 48.0
d. 48.0/100,000 = 0.00048
e. cannot be computed from these data
my answers..
1.C
2.B
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Old 06-10-2011
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1. C
2. B
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Star correct answer

yup, c & b are the answers...
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Old 11-05-2015
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Default please!

Can somebody explain why those answers?
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