pain Relief No pain Relief

New Medication 44 76

Placebo 21 99

a. Estimate the risk difference in pain relief between treatment

b. Estimate the relative risk in pain relief between treatment.

c. Estimate the odds ratio in pain relief between treatment

The upper and lower limits of the OR are shown below

Lower Limit of CI: 0.41

Upper Limit of CI: 1.61

Based on the Confidence interval values which of the following are true?

A. One can be 95% confident that the true value will be greater than the upper limit?

B. One can be 95% confident that the true value will be greater than the lower limit?

C. Once can be 95% confident that the value will treatment the upper and lower limit.

D. a and b