Stats Flashcards
1
Q
Mann-Whitney U test
A
compares ordinal, interval, or ratio scales of unpaired data
2
Q
Wilcoxon signed-rank test
A
compares two sets of observations on a single sample, e.g. a ‘before’ and ‘after’ test on the same population following an intervention
3
Q
chi-squared test
A
used to compare proportions or percentages e.g. compares the percentage of patients who improved following two different interventions
4
Q
Student’s t-test - paired or unpaired
A
parametric test
5
Q
Number needed to treat
A
It is calculated by 1/(Absolute risk reduction) and is rounded to the next highest whole number
