ANOVA Results for Experiments

Sample Paper Excerpt

A researcher is preparing to submit a manuscript describing a study testing the effectiveness of specifically developed educational interventions to increase compliance to a medical regimen among tuberculosis patients of a public health clinic. Compliance is defined as 96% of appointments kept. There are three intervention groups (educational counseling, incentive, and educational counseling/incentive combination) as well as a control group.

The researcher states the following working hypothesis in the manuscript:

Ho1: On average, tuberculosis patients in the intervention groups and the control group will differ in their mean level of compliance.

The researcher uses an ANOVA to demonstrate differences among the groups.

What mistake was made by the author?

There should have been more than three intervention groups.
No mistake was made.
The hypothesis as stated can't be tested from date collected through this design.
An ANOVA analysis is inappropriate to analyze this response variable.

Proceed to the

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