Tons: On The investigator stratified the results, separately for the older subjects (aged 65 and over) and the younger subjects (aged 40-64). They were able to establish the following facts: e ● ● • Of the 387 men who were bald and had CHD, 375 were older and 12 were younger. Of the 4,613 men who were bald and did not have CHD, 3,375 were older and 1,238 were younger. Of the 95 men who were hairy and had CHD, 50 were older and 45 were younger. Of the 4,905 men who were hairy and did not have CHD, 450 were older and 4,455 were younger. 3. Create two 2 x 2 tables for the stratified results O Accessibility: Investigate HI Bald Hairy Total L Bald Hairy Total HH I Older Subjects CHD (99+ CHD No CHD Younger Subjects No CHD Р Total Total Focus BE

Tons: On The investigator stratified the results, separately for the older subjects (aged 65 and over) and the younger subjects (aged 40-64). They were able to establish the following facts: e ● ● • Of the 387 men who were bald and had CHD, 375 were older and 12 were younger. Of the 4,613 men who were bald and did not have CHD, 3,375 were older and 1,238 were younger. Of the 95 men who were hairy and had CHD, 50 were older and 45 were younger. Of the 4,905 men who were hairy and did not have CHD, 450 were older and 4,455 were younger. 3. Create two 2 x 2 tables for the stratified results O Accessibility: Investigate HI Bald Hairy Total L Bald Hairy Total HH I Older Subjects CHD (99+ CHD No CHD Younger Subjects No CHD Р Total Total Focus BE

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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Question

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**Results Stratification for Coronary Heart Disease and Age**

The investigator stratified the results separately for the older subjects (aged 65 and over) and the younger subjects (aged 40–64). They were able to establish the following findings:

- Of the 387 men who were bald and had Coronary Heart Disease (CHD), 375 were older and 12 were younger.
- Of the 4,613 men who were bald and did not have CHD, 3,375 were older and 1,238 were younger.
- Of the 95 men who were hairy and had CHD, 50 were older and 45 were younger.
- Of the 4,905 men who were hairy and did not have CHD, 450 were older and 4,455 were younger.

**Task:**

3. Create two 2 x 2 tables for the stratified results.

**Tables Explanation:**

- **Older Subjects:**

A table is set up to categorize older subjects based on their baldness and presence of CHD. The rows represent whether the subjects are bald or hairy, while the columns represent whether they have CHD or not, including a total.

- **Younger Subjects:**

Similarly, a table for younger subjects categorizes individuals based on the same criteria: baldness and presence of CHD, with rows and columns mirroring those in the older subjects' table.

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Calculate the incidence of CHD in older men. (This is not asking for the risk ratio.)

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