`group_vars(PKNCAconc) != group_vars(PKNCAresults)`

[billdenney]

This already exists but I must admit I am actually pro-considering as group_vars for PKNCAresults also start, end and perhaps in the future PPANMETH to differentiate any parameter that may not be calculated in the same way (e.g, different impute)

So in my opinion should be that group_vars(PKNCAconc) != group_vars(PKNCAresults)

Originally posted by @Gero1999 in #451 (comment)

[billdenney]

@Gero1999, I fully support this. It makes sense as a difference. If someone is using the old behavior, they can use group_vars(as_PKNCAconc(o_nca)) as a simple change. Can you please make a simple PR to pull in results-focused columns?

@john-harrold, would this break anything for you? If so, you can go ahead and use the above work-around, and it should give you what you want after the change.

[john-harrold]

I'm not sure if this will break anything, but if it does I'll roll with it :).

If no normalization is selected would PKNCA behave differently?

[billdenney]

This would not depend on the normalization.