nd Ratios: A retrospective study of lung cancer and tobacco smoking habits in England produced the following data: Average # Cig. Per day Cancer Patients COntrol Patients None 7 61 <5 55 129 5-14 489 570 15-24 475 431 25-49 293 154 50+ 38 12
nd Ratios: A retrospective study of lung cancer and tobacco smoking habits in England produced the following data: Average # Cig. Per day Cancer Patients COntrol Patients None 7 61 <5 55 129 5-14 489 570 15-24 475 431 25-49 293 154 50+ 38 12
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Topic: Risk, Odds and Ratios: A retrospective study of lung cancer and tobacco smoking habits in England produced the following data:
Average # Cig. Per day | Cancer Patients | COntrol Patients |
None | 7 | 61 |
<5 | 55 | 129 |
5-14 | 489 | 570 |
15-24 | 475 | 431 |
25-49 | 293 | 154 |
50+ | 38 | 12 |
a. Estimate the odds of cancer for each of the row-categories.
b. Compute and interpret odds ratios for each of the following: None vs. <5, <5 vs. 5-14, 5-14 vs. 15-
24, 15-24 vs 25-49, and 25-49 vs. 50+.
c. Compute and interpret an odds ratio for None vs. “at least one”. How does it compare to part (b) and do your computations from part (b) appear to have reasonable interpretative value?
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