Question
A survey is conducted to investigate the relationship between exposure of a mysterious chemical A and specific chronic disease B. The results of the survey
A survey is conducted to investigate the relationship between exposure of a mysterious chemical A and specific chronic disease B. The results of the survey are shown as the following contingency table based on exposure status (those with and without chemical A exposure) and disease status (disease B or not).
| Disease B | No diabetes | Total | |
| chemical A exposure | 125 | 75 | 200 |
| No chemical A exposure | 50 | 150 | 200 |
| Total | 175 | 225 | 400 |
A. Please test whether there is an association between chemical A exposure and disease B.
PLEASE SHOW THE CALCULATIONS FROM THE TABLE
B. Please calculate the odds ratio of having disease B comparing to no disease group under the chemical A exposure and its 95% confidence interval
PLEASE SHOW THE CALCULATIONS FROM THE TABLE
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John E Freunds Mathematical Statistics With Applications
Authors: Irwin Miller, Marylees Miller
8th Edition
978-0321807090, 032180709X, 978-0134995373
