# In a random sample of 100 patients with biopsy-confirmed breast cancer, a study examines cancer detection rates

## Question:

In a random sample of 100 patients with biopsy-confirmed breast cancer, a study examines cancer detection rates with 50 previously collected, two-dimensional (2D) mammograms compared to detection rates in 50 previously collected, three-dimensional (3D) mammograms. The alpha selected for this pilot study is 0.10, and the power is 0.80.

Instead the study design involved looking at 100 women who had both a 2D and a 3D mammogram to determine which screen had higher detection rates. Would a chi-square test be appropriate? Why or why not?

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## Statistics For Nursing A Practical Approach

**ISBN:** 9781284142013

3rd Edition

**Authors:** Elizabeth Heavey