jamovi

Hi,

I want to carry out a correlation between pre/full-term and several dependent variables (ADHD, self-esteem etc..) ... To identify whether birth status affects different outcomes in adulthood.

How can I split the pre/full-term category into two separate variables please?

At the moment if I run the whole variable through a correlation, it doesn't split them, and only gives me one statistic.

Thanks

But I also know you can't feed nominal data through a correlation, so would I just compare means instead?

you could insert two computed columns, using the formulas:

IF(`Pre/Full Term` == 'Pre-term (before 37 weeks)', ADHD)
IF(`Pre/Full Term` == 'Full-term (after 37 weeks)', ADHD)

ideally jamovi would provide a 'split' function, but we haven't implemented that yet.

cheers

I think I replied to your other question about error messages in jamovi. I believe your issue is not the program related but more conceptual, measurement issue related. MacCallum et al.'s (2002) article in Psychological Methods will help and answer your questions.