Research suggests that people who get angry easily tend to have more heart disease.

Data from a study on 8474 randomly chosen people with low blood pressure from three locations over four years appears below. The subjects were free of heart disease at the start and all took the Spielberger Trait Anger Scale test to assess how prone they are to sudden anger. Those who had heart attacks and who needed medical treatment for heart disease are in the CHD group.

Anger Low Moderate High Total
CHD 53 110 27 190
no CHD 3057 4621 606 8284
Total 3110 4731 633 8474

a. What are the odds of CHD?
b. What is the risk of CHD for those with low anger?
c. What is the risk of CHD for those with moderate anger?
d. What is the risk of CHD for those with high anger?
e. What are the odds of CHD for those with low anger?
f. What are the odds of CHD for those with moderate anger?
g. What are the odds of CHD for those with high anger?
h. The relative risk of CHD for moderate anger compared to low anger is?

Question

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hafsaabdulhai hafsaabdulhai · Answer 1 · 2020-05-03T03:56:45+02:00

Answer:

a) 0.0229

b)0.01704

c) 0.0233

d) 0.0427

e) 0.0173

f)0.0238

g) 0.0446

h) 1.364

Step-by-step explanation:

a) P(CHD)/ P(no CHD)= (190/8474)/(8284/8474)

b) P(CHD with low anger)= 53/3110

c) P(CHD with moderate anger)= 110/4731

d) P(CHD with high anger)= 27/633

e) P(CHD with low anger)/ P(no CHD with low anger)= (53/3110)/(3057/3110)

=53/3057

f)P(CHD with moderate anger)/ P(no CHD with moderate anger)= (110/4731)/(4621/4731)

=110/4621

g) P(CHD with high anger)/ P(no CHD with high anger)= (27/633)/(606/633)

=27/606

h) P(CHD with moderate anger)/ P(CHD with low anger)= (110/4731)/(53/3110)