5. What was the attrition number and rate for this study? Provide a rationale for your answer.
6. Calculate the attrition rate for a study that included a sample size of 250 subjects and 10
became too ill to
continue in the study, 5 could not be contacted after hospital discharge,
and 4 died. Round your answer to the nearest tenth of a percent.
7. What was the total sample for this study?