please double-check that you've got all of your parameters correct by
typing ?svymean ?svyby and ?make.formula before you send questions to
r-help :)
# you spelled design wrong and probably need to throw out your NA values.
try this
# percentile by SPD status
svyby(~dthage, ~xspd2, design=nhis, svyquantile, c( 0 , .25 , .5 , .75 , 1
), keep.var = F, na.rm = TRUE)
# mean for each of the 3 variables
# this returns a logical vector, but make.formula requires a character
vector
vars <- names(nhis) %in% c("dthage", "ypll_ler", "ypl_75")
vars
svymean(make.formula(vars),nhis,subset (nhis, mortstat==1), na.rm=TRUE)
# create a character vector instead
# note you also spelled the third variable wrong-- it will break unless you
correct that
vars <- c("dthage", "ypll_ler", "ypll_75")
# this statement has two survey design parameters, which won't work. which
one do you want to use?
svymean(make.formula(vars),nhis,subset (nhis, mortstat==1), na.rm=TRUE)
# pick one
svymean(make.formula(vars),nhis, na.rm=TRUE)
svymean(make.formula(vars),subset(nhis, mortstat==1), na.rm=TRUE)
# all of the variables in vars are NA whenever mortstat isn't 1, so they
give the same results
On Tue, Oct 2, 2012 at 7:51 PM, Muhuri, Pradip (SAMHSA/CBHSQ) <
pradip.muh...@samhsa.hhs.gov> wrote:
>
> Hello,
>
> Although my R code for the svymean () and svyquantile () functions works
> fine, I am stuck with the svyby () and make.formula () functions. I got
> the following error messages.
>
> - Error: object of type 'closure' is not subsettable # svyby ()
> - Error in xx[[1]] : subscript out of bounds # make.formula ()
>
> A reproducible example is appended below.
>
> I would appreciate if someone could help me.
>
> Thank you in advance.
>
> Pradip Muhuri
>
>
> ####Below is a reproducible example
> ##########################################
>
> setwd ("E:/RDATA")
>
> library (survey)
>
> xd1 <-
> "dthage ypll_ler ypll_75 xspd2 psu stratum wt8 mortstat
> NA NA NA 2 1 1 1683.7387 0
> NA NA NA 2 1 1 640.8950 0
> NA NA NA 2 1 1 714.0662 0
> NA NA NA 2 1 1 714.0662 0
> NA NA NA 2 1 1 530.5263 0
> NA NA NA 2 1 1 2205.2863 0
> NA NA NA 2 1 339 1683.7387 0
> NA NA NA 2 1 339 640.8950 0
> NA NA NA 2 1 339 714.0662 0
> NA NA NA 2 1 339 714.0662 0
> NA NA NA 2 1 339 530.5263 0
> NA NA NA 2 1 339 2205.2863 0
> 78 8.817926 0 2 2 1 592.3100 1
> 80 9.291881 0 2 2 1 1014.7387 1
> 87 5.001076 0 2 2 1 853.4763 1
> 87 5.001076 0 2 2 1 505.1475 1
> 88 5.510514 0 2 2 1 1429.5963 1
> 78 8.817926 0 2 2 339 592.3100 1
> 80 9.291881 0 2 2 339 1014.7387 1
> 87 5.001076 0 2 2 339 853.4763 1
> 87 5.001076 0 2 2 339 505.1475 1
> 88 5.510514 0 2 2 339 1429.5963 1
> 78 8.817926 0 2 2 339 592.3100 1
> 80 9.291881 0 2 2 339 1014.7387 1
> 87 5.001076 0 2 2 339 853.4763 1
> 87 5.001076 0 2 2 339 505.1475 1
> 88 5.510514 0 2 2 339 1429.5963 1"
> newdata <- read.table (textConnection(xd1), header=TRUE, as.is=TRUE)
> dim (newdata)
>
>
> # make the grouping variable (xspd)2
> newdata$xspd2 <- factor(newdata$xspd2,levels=c (1,2),labels=c('SPD', 'No
> SPD'), ordered=TRUE)
>
> nhis <- svydesign (id=~psu,strat=~stratum, weights=~wt8, data=newdata,
> nest=TRUE)
>
>
> # mean age at death - nationwide
>
> svymean( ~dthage, data=nhis , subset (nhis, mortstat==1))
>
> # mean by SPD status
> svyby(~dthage, ~xspd2 , design=nhis, svymean )
>
> #percentile
> svyquantile(~dthage, data = nhis , subset (nhis, mortstat==1), c( 0 ,
> .25 , .5 , .75 , 1 ) )
>
> # percentile by SPD status
> svyby(~dthage, ~xspd2, desin=nhis, svyquantile, c( 0 , .25 , .5 , .75 , 1
> ), keep.var = F)
>
> # mean for each of the 3 variables
>
> vars <- names(nhis) %in% c("dthage", "ypll_ler", "ypl_75")
> vars
> svymean(make.formula(vars),nhis,subset (nhis, mortstat==1), na.rm=TRUE)
>
>
>
>
>
>
>
>
> #############################################
>
> Pradip K. Muhuri
> Statistician
> Substance Abuse & Mental Health Services Administration
> The Center for Behavioral Health Statistics and Quality
> Division of Population Surveys
> 1 Choke Cherry Road, Room 2-1071
> Rockville, MD 20857
>
> Tel: 240-276-1070
> Fax: 240-276-1260
> e-mail: pradip.muh...@samhsa.hhs.gov<mailto:pradip.muh...@samhsa.hhs.gov>
>
> The Center for Behavioral Health Statistics and Quality your feedback.
> Please click on the following link to complete a brief customer survey:
> http://cbhsqsurvey.samhsa.gov
>
>
>
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