Both my outcome variable and my independent variables are proportions (%). I am trying to run a logistic regression to see which independent variable is the most significant in its effect against my Y but stata gives me the
"outcome does not vary; remember:
0 = negative outcome,
all other nonmissing values = positive outcome" error.
I dont have any missing values, could someone explain to me what the error is or what i need to do to rectify it? Is there any other form of the logistic regression that i could use in this case?

Any help would be much appreciated