hi, i think you want elsq1ch_brr <- update( elsq1ch_brr , F1HIMATH = relevel(F1HIMATH,"PreAlg or Less") )
On Mon, Oct 31, 2016 at 9:05 PM, Courtney Benjamin <cbenj...@btboces.org> wrote: > Hello R Users: > > I am using the survey package in R for modeling with complex survey data. > I am trying to reset the baseline level of certain predictor variables > being used in a logistic regression without success. The following is a > reproducible example: > > library(RCurl) > library(survey) > > data <- getURL("https://raw.githubusercontent.com/ > cbenjamin1821/careertech-ed/master/elsq1adj.csv") > elsq1ch <- read.csv(text = data) > > #Specifying the svyrepdesign object which applies the BRR weights > elsq1ch_brr<-svrepdesign(variables = elsq1ch[,1:16], repweights = > elsq1ch[,18:217], weights = elsq1ch[,17], combined.weights = TRUE, type = > "BRR") > elsq1ch_brr > > #Log. Reg. model > allCC <- svyglm(formula=F3ATTAINB~F1PARED+BYINCOME+F1RACE+F1SEX+ > F1RGPP2+F1HIMATH+F1RTRCC,family="binomial",design= > elsq1ch_brr,subset=BYSCTRL==1&G10COHRT==1,na.action=na.omit) > summary(allCC) > > ##Attempting to reset baseline level for predictor variable > #Both attempts did not work > elsq1ch$F1HIMATH <- C(elsq1ch$F1HIMATH,contr.treatment, base=1) > elsq1ch$F1HIMATH <- relevel(elsq1ch$F1HIMATH,"PreAlg or Less") > > #Log. Reg. model with no changes in baseline levels for the predictors > allCC <- svyglm(formula=F3ATTAINB~F1PARED+BYINCOME+F1RACE+F1SEX+ > F1RGPP2+F1HIMATH+F1RTRCC,family="binomial",design= > elsq1ch_brr,subset=BYSCTRL==1&G10COHRT==1,na.action=na.omit) > summary(allCC) > > > Any guidance is greatly appreciated.? > > Sincerely, > > Courtney? > > Courtney Benjamin > > Broome-Tioga BOCES > > Automotive Technology II Teacher > > Located at Gault Toyota > > Doctoral Candidate-Educational Theory & Practice > > State University of New York at Binghamton > > cbenj...@btboces.org<mailto:cbenj...@btboces.org> > > 607-763-8633 > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/ > posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.