search for: multi2

Hello R users, I am performing a multinomial logit regression and would like to constrain a few model coefficients to be equal. Here is my model: multi <- vglm(case123con ~ SNP_A1+SNP_A2+age, multinomial, work.analy) where case123con is a four level categorical variable (case 1, case 2, case 3, control) and SNP_A1 and SNP_A2 are indicator functions (yes/no). The output of this

...drop race mult2.cl<-update(mult.cl,.~.-race) summary(mult2.cl) ###################### # check interactions # ###################### multi1.cl<-update(mult2.cl,.~.+age:lwt) summary(multi1.cl) anova(mult2.cl,multi1.cl) # then comes the interaction with smoke # no good! Here's the problem multi2.cl<-update(mult2.cl,.~.+age:smoke) summary(multi2.cl) anova(mult2.cl,multi2.cl) # has to define my own variable? dataset$ageNsmoke<-as.numeric(dataset$smoke=="yes")*dataset$age multi2a.cl<-update(mult2.cl,.~.+ageNsmoke) summary(multi2a.cl) anova(mult2.cl,multi2a.cl) # but suppo...

Hello, I'm looking for help on the best approach to get "multi-value" data fields into R for simple descriptive analysis. ------------------------------------- I am new to this list and new to R, but I really want to get over the hump and get productive with it. Some help with how to best get the following data into R would be greatly appreciated. I have programming experience