A study is performed to compare several different pain reducing medications for

Question

A study is performed to compare several different pain reducing medications for the treatment of migraine headaches. The drugs tested are: Placebo, Tylenol, Excedrin, Imitrex. Four hundred migraine sufferers were recruited for the study and they were randomly assigned to one of the four groups and were given unmarked tablets to take when they had a migraine. The effectiveness of pain relief was documented with a survey and compared between groups. Which statistical test should be used to compare the pain relief effectiveness between the four groups?

a. Independent t-test

b. Dependent t-test

c. One way ANOVA

d. Repeated measures ANOVA

Explanation / Answer

option C) is correct, because if we want to compare several groups of means is significant or not then we use One way ANOVA

the above information to test the effectiveness of average pain relief was documented with a survey and compared between four groups is applicable for ANOVA one way classification

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