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b. Using the dataset provided categorise the measured variables and list in the correct column

16 / 01 / 2019 Statistics

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1. Copy the following table into your submission.

a. Briefly define each type of variable

b. Using the dataset provided categorise the measured variables and list in the correct

column

2. Assess the heart rate variable for its distribution at admission for both the HFNP and NRM

groups. Describe the probability distribution. Generate a histogram illustrating your

findings for each group.

a. What are the mean and standard deviation values?

b. What are the median and interquartile values?

3. Is there a statistically significant difference between the groups based upon the heart rate,

oxygenation or asthma severity score on admission?

4. Assess the oxygenation variable for its distribution at admission for both the HFNP and NRM

groups. Describe the probability distribution. Generate a histogram illustrating your findings.

a. What are the mean and standard deviation values?

b. What are the median and interquartile values?

5. What statistical phrase is used to describe the difference or lack of difference in regard to

oxygenation and heart rate between your groups?

6. Conduct a T-test for each variable from admission to the 15 and 60 and 120 minute mark.

Present the p value and confidence intervals for each variable at these timepoints.

7. Using an appropriate test which treatment (HFNP or NRM) showed the greatest

improvement? In which variables?

8. Is there a correlation between the asthma severity score and oxygenation at admission for

either group? Generate a scatter plot illustrating your findings.

9. Is there a correlation between smoking status and asthma severity score for all participants?

Generate a scatter plot illustrating your findings.

10. What is the OR for smokers to have a higher asthma severity score?

11. In reference to the research question what conclusion would you draw based upon your

analysis?


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