Refer to the data of Exercise 18.26.
a. Consider the change in seizure rates from the baseline to the 5-month reading. Compare the two groups using these data. Do you reach a similar conclusion as was reached in Exercise 18.26?
b. Because seizure rates can be quite variable, some people might compare the maximum change for patients in the two groups. Do these data support your previous conclusions?
The seizure data for the study of Exercise 18.25 are shown here. Note that we have baseline seizure rates, as well as seizure rates for 5 months while on therapy.
a. Plot the mean seizure rates by month for the two groups. Does the investigational drug appear to work?
b. Run a repeated measures AOV, and draw conclusions based on .01.
A study was conducted to demonstrate the effectiveness of an investigational drug product in reducing the number of epileptic seizures in patients who have not been helped by standard therapy. Thirty patients participated in the study, with 15 randomized to the drug treatment group and 15 to the placebo group. Patient demographic data are displayed here.
a. Do the groups appear to be comparable in terms of these demographic variables?
b. Are the mean ages or durations of illness different? How would you make this comparison?
c. How might you compare the sex distributions of the two groups?
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