Question

Another survey asked 10,000 adults age 21 to 100 “do you rate your health as poor?” (coded 1=yes and 0=no). The effects of age and sex (0=female, 1=male) on the health rating was examined using logistic regression. Age was expressed in decades: 1=21-30, 2=31-40, …, 8=91-100). The results are summarized in the following table.

	Odds ratio	95% confidence interval
Sex	1.038	0.634	1.697
Age	1.038	1.032	1.045

QUESTION:

1. What is the percent increase in a male rating his health as being poor?
   1. 103.8%
   2. 10.38%
   3. 3.8%
   4. Calculating this percentage doesn’t make sense because age is not statistically significant

Answer 1

C) 3.8%

Explanation:-

The odds ratio is 1.038. This is greater than 1. Hence the percent increase in the chance of a 78-year old (male or female) as rating his/her health as poor is 3.8%

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