Other Flashcards
1
Q
D-dimer was measured in 200 randomly selected patients with asthma and 200 randomly selected patients with COPD. The data was normally distributed after a logarithmic transformation.
Which method of analysis would best identify whether there was a diff erence between the two groups of patients?
A. Chi-square test
B. Correlation coefficient
C. Logistic regression analysis
D. Mann–Whitney U test
E. Unpaired T-test
A
E. T-tests are used to compare a single, continuous, variable across two groups, when the data is parametric and follows a normal distribution. The paired T-test is used when the two groups are matched (e.g. pre/post-intervention or case–control). The unpaired T-test is used when the
groups are not matched.
