st: logistic regr followed by lowess

["stata_user stata_user" <stata_dofile@hotmail.co.uk>]

Dear all,
I have an outcome y dichotomous (0/1) and a continuous predictor X1


I use
logit y X1
I predict
p
and then I use the lowess smooth curve

I have a confusion about the  lowess.

I am not sure if the lowess fits smooth successive non paramteric regression 
(Y X1) for successive small intervals of X1 (starting with the smallest 
values of X1), and then produces a smooth option of the predicted 
probabilities

Or if it fits successive logistic regression models followed by a smooth 
graph of these probabilities of these models

Please can you advise on this question?

Thanks a lot for your useful comments

Sami

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