A random digit dialing sample of 1750 adults found that 1140 used some form of prescription medication. Of those who used prescription drugs, 940 said they are concerned about the current state of health care; 320 of the 610 nonusers agreed with this position as well. Consider prescription drug users to be the reference group. What is the absolute risk reduction?

Question

Quizplus · Accepted Answer

The absolute risk reduction is calculated as the difference in the proportion of concern between nonusers and users. For users: 940/1140 = 0.8246. For nonusers: 320/610 = 0.5246. The absolute risk reduction is 0.8246 - 0.5246 = 0.3000.

A Random Digit Dialing Sample of 1750 Adults Found That