[R] Getting INDIVIDUAL effects of multiple qualitative variables (ordered and unordered factors)

[Rafael Costa]

Dear Richard,

I really appreciate your help.

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#In fact, I wish calculate
library (quantreg)
qrModel2=rq(data=tabela1.1, pontoefetivo ~ p1 + p21 + p22 + p23 + p24 + p25
+ p34 + p5 + p6 + p7 + p8 + p9, tau=0.5)
summary(qrModel2)
#But I have to suppress the intercept and consider that the reference group
is also zero.
#When I make
qrModel3=rq(data=tabela1.1, pontoefetivo ~ 0+ p1 + p21 + p22 + p23 + p24 +
p25 + p34 + p5 + p6 + p7 + p8 + p9, tau=0.5)
summary(qrModel3)
#The value of the reference group reappears in the first estimated
coefficient.

Is there any way to do this?

Thanks in advance ,

Rafael Costa.

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