nbme 3 b4 44 Odds ratio - QQQQQQ - agnosia

[ArchivalUser]

44. A case-control study is conducted to assess the possible relationship between regular use of aspirin and colon cancer. The odds ratio
for colon cancer among aspinn users is 0.6 with a 95% confidence interval of 0.4 to 0.9. Which of me following is the most accurate conclusion?
A) The attributable risk of colon cancer from aspirin use is 6 per 1000 person-years
B) The incidence of colon cancer among aspirin users is 6 per 1000 person-years
C) The incidence of colon cancer among nonusers of aspirin is 6 per 1000 person-years
D) The probability of confounding bias is less than 5%
F) The risk of colon cancer is 40% lower in aspirin users than nonusers

[ArchivalUser]

FF

[ArchivalUser]

explain pls ??? how did u come up with 40% ..

[ArchivalUser]

when confidence interval does not have value of 1 --> means study is statically significant.

Now odd ratio is 0.6 for colon cancer, that means --> 1-0.6= 0.4 lower risk.

0.4 ratio equivalent to 40%.

You will find same question with same concept in UW.