Create a variable measuring change of score from one wave to another

There are three waves of data in the survey I use. My independent variable (a score) is continuous and dependent variable dichotomous. I would like to create a variable indicating change of the score from wave 1 to wave 2 and 2 to 3 to regress it on the dependent variable at waves 2 and 3. I am thinking of first creating a change variable

Code:

gen leadvar = score[_n+1]
gen changevar = leadvar - score

, and then should I just

Code:

xtlogit changevar devar

? Will this regress the independent variable on the right wave of dependent variable? Thank you.

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