Epidemiologists wanted to know if irregular exercise increased the risk of bone

Question

Epidemiologists wanted to know if irregular exercise increased the risk of bone fractures among the elderly.Women with and without bone fractire being treated at a local orthopedic clinic were contacted and asked about their exercise habits during the past year. Of the 600 women studied, 200 had a bone fracture. Also, 26 of the women with a fracture reported regular exercise, while 102 women without bone fracture reported regular exercise. Answer the following questions. Assume an alpha level of 0.05.
Calcualte the correct measure of association. Round to one decimal place. Show your work

a. 2.29 b. 1.8 c. 0.4 d. 2.3

The correct answer is 2.3, but I am not sure of how my professor solved the problem.

Please help!

Explanation / Answer

No of women = 600

No who had bone fracture =200

REgular exercise and fracture -26/108

Regular exercise and no fracture =102/128

H0: Fracture is independent of exercise

Ha:Fracture depends on exercise

(Two tailed chi square test)

The chi-square statistic is 136.3063. The p-value is < .00001. The result is significant at p < .05.

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.