2
$\begingroup$

I am trying to compare the change in score of inhaler technique in the same group of patients at different time points:

  • before counseling
  • 1 week after counseling
  • 2nd week of counseling

I have scored the technique using an 8 item checklist. Each step performed correctly is scored 1 and each step performed incorrectly is scored 0.

What is a suitable test to use in this case? Would a repeated measures ANOVA work? If not, which test should I use?

$\endgroup$
1
$\begingroup$

The only problem I can see with using a repeated measures ANOVA would be the assumption that the error component of the score is normally distributed. If you think that is a reasonable assumption than use repeated measures ANOVA.

If the error component is not approximately normal there is a nonparametric repeated measures alternativeSee the following link:

In the case where the error is not approximately normal there is a nonparametric repeated measures test. See the following link:

Nonparametric Repeated Measures ANOVA

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.