st: mlogit, and probabilities for continuous IV

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

Dear All,

I am using the mlogit (y is an outcome  with 3 categories)

xi: mlogit y   x1 x2  i.x3   i.x4, baseoutcome(1)  rrr
x1 and x2 continuous
and x3mx4 dichotomious

I use

predict p1 p2 p3

sort x1

line p1 x1 if x2==mean(x2) & x3==0 & x4==0 || p2 x1 if x2==mean(x2) & x3==0 
& x4==0 || p3 x1 if x2==mean(x2) & x3==0 & x4==0

I have a problem to create this graph for the x2=mean(x2)

Any comments please

Thanks a lot

Sami

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