What is the added value of combining multiple variables instead of treating them separate?

#1
Hey guys,

I'm preparing my dataset for some research. I'm doing research on the effect of some barriers (language, education level etc.) on vaccination readiness. And I don't know if I want to combine the variables (same scales and the cronbach alfa is fine) of put them seperated in my model. My question is:

What is the added value when I combine the variables to one variable?
 

Karabiner

TS Contributor
#2
Which variables are you referring to? And why do you ask that question, has someone recommended
a combination?

With kind regards

Karabiner