HLTH 501 WEEK 3 Questions and Answers UPDATED

HLTH 501


WEEK 3 PROBLEMS—30 POINTS

10 points per problem. Put answers in the table:
.

1.


2.


3.




1. A clinical trial is conducted comparing a new pain medication for arthritis. Participants are
randomly assigned to receive the new medication or a placebo. The outcome is pain relief within
30 minutes. The data are shown below.

Pain Relief No Pain Relief
New Medication 44 76
Placebo 21 99

Estimate the risk difference in pain relief between treatments

= 0.192

Estimate the relative risk in pain relief between treatments

= 2.0971

Estimate the odds ratio in pain relief between treatments

= 2.7332

The upper and lower limits of the 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.


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