Question

What test can be used to compare event rates among the three groups?

   What test can be used to compare event rates among the three groups?

Fundamentals of Biostatistics

Fundamentals of Biostatistics

Bernard Rosner 8th Edition

Chapter 10, Problem 136

Instant Answer

Solved by Expert Jeremiah Mbaria

07/20/2020

Step 1

First, identify the type of data you have. In this case, you have event rates (categorical data) among three groups. Show more…

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What test can be used to compare event rates among the three groups?

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Key Concepts

Chi-square Test

The chi-square test is a statistical method used to determine whether there is a significant difference between the expected frequencies and the observed frequencies in one or more categories of a contingency table. It is particularly useful for comparing event rates or proportions among different groups when the outcome is categorical.

Comparing Proportions

Comparing proportions involves analyzing the relative frequencies or probabilities of an event occurring in distinct groups. This concept underlies tests like the chi-square test, which assess whether observed differences in event rates among groups are statistically significant or likely due to chance.

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