Bla ordlisten:

comparing like with like

— In treatment comparisons, making sure that groups of participants being compared in a study are as similar as possible in all ways other than the treatments being compared.

Synonyms:

group equivalence

Full forklaring:

Comparing like with like implies that, in comparisons of two or more treatments to assess their relative merits, steps are taken to ensure that, as far as possible, the comparison groups are alike in all respects other than the treatments being compared, and differences due to the play of chance.

Still don't get it?

If you feel that this definition hasn't helped you to understand the term, click on our monkey to let us know.