Hi, If I have the follow example: y = count data x1 = continuous data x2 = qualitative data (2 factors levels) I make a model glm(y~x1,family=poisson) The model has only one curve, to calculate r-square, I do "x1 Deviance"/"total Deviance" But in a model with x2 glm(y~x1+x2,family=poisson) I have two curves, but I dont have, using summary() or anova(), the deviance for separates levels. How to obtain rsquare for the two ajusted curves??? Thanks Ronaldo -- Quando uma boa administra??o ? trazida para um mau neg?cio, ? a reputa??o do neg?cio que permanece intacta --Warren Buffet -- | // | \\ [*****************************][*******************] || ( ? ? ) [Ronaldo Reis J?nior ][PentiumIII-600 ] | V [UFV/DBA-Entomologia ][HD: 30 + 10 Gb ] || / \ [36571-000 Vi?osa - MG ][RAM: 128 Mb ] | /(.''`.)\ [Fone: 31-3899-2532 ][Video: SiS620-8Mb ] ||/(: :' :)\ [chrysopa at insecta.ufv.br ][Modem: Pctel-onboar] |/ (`. `'` ) \[ICQ#: 5692561 ][Kernel: 2.4.18 ] || ( `- ) [*****************************][*******************] ||| _/ \_Powered by GNU/Debian W/Sarge D+ || Lxuser#: 205366