I am conducting a one-group pre-intervention / post-intervention test. All the subjects completed the intervention as otherwise there would be ethical concerns. Is there any test other than a paired t-test that can be used to also take into account covariates, such as time, experience, etc?


1 Answer 1


There are problems with any alternative but there are also problems with the paired t in this situation.

But one thing you could do is look at whether score (or result or whatever) is related to whatever it is you are interested in and add pre- vs. post- as a variable.

One problem is that, unless the measure is close to perfect, you could be testing the error rather than the effect of the intervention.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

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