I have a dataset with two variables where participants replied yes (1), no (2) or skipped (-9). I would like to combine these two variables so that anyone who answered yes to one or the other will be placed in the yes (1) category.
Basic format I have and what I'd like to have including variable names:
I have previously tried:
ipv <- M$PSO_PS * M$SSO_PS
I don't think this is correct though because the table with answers does not show the same number of participants (it is fewer).
question from:
https://stackoverflow.com/questions/65546438/how-to-combine-two-categorical-variables 与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…