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Exercise 6: Understanding Frequencies And Percentage

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EXERCISE 6
Understanding Frequencies and Percentages
1. What are the frequency and percentage of the COPD patients in the severe airflow limita¬tion group who are employed in the Eckerblad et al. (2014) study? 2. What percentage of the total sample is retired? What percentage of the total sample is on sick leave? 3. What is the total sample size of this study? What frequency and percentage of the total sample were still employed? Show your calculations and round your answer to the nearest whole percent. 4. What is the total percentage of the sample with a smoking history—either still smoking or former smokers? Is the smoking history for study participants clinically important? Provide a rationale for your answer. 5. What are pack years of smoking? Is there a significant difference between the …show more content…
2. What is the mode for the variable inpatient complications in Table 2 of the Winkler et al. (2014) study? What percentage of the study participants had this complication?
The mode is AMI post admission for patients admitted with UA. The percentage of the study participants that had this complication is 8%.
3. Does the distribution of inpatient complications have a single mode, or is this distribution bimodal or multimodal? Provide a rationale for your answer. single mode which indicates a normal distribution.
4. As reported in Table 1, what are the three most common cardiovascular medical history events in this study, and why is it clinically important to know the frequency of these events? Personal history of CAD, History of unstable angina, and previous acute myocardial infarction. It is clinically important to know the frequencies because they help in demography to know the amount of patients who suffer from cardiovascular diseases.
5. What are the mean and median lengths of stay (LOS) for the study participants? Mean = 5.37 median =

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