Please assist me in arriving at the answer for an Epidemiology question. I have
ID: 3178725 • Letter: P
Question
Please assist me in arriving at the answer for an Epidemiology question. I have the answer and have trouble creating a 2 X 2 table.
The question reads:
The investigators now examined those with hepatitis B separetely. There were 239 individuals with Hepatits B in the study and 221 with no hepatitis B. Among those with Hep B, there were 132 with liver cirrhosis, 106of whom were drinkers. Of the 107with no cirrhosis, there were 44 non-drinkers. What is the odds ration of drinking and cirrhosis among those with Hepatitis B? It ask to round the answer off to the hundreths place. ANSWER = 2.85
Please respond asap !
Thanks!
Michelle
Explanation / Answer
The contingency table can be formed as follows
The odds ratio is thus
(a/b)/(c/d) = ad/bc = (106*44)/(26*63)
= 2.847 , hope this helps !!
LC No LC Total Drinkers 106 63 169 Non drinkers 26 44 70 Total 132 107 239