Displaying 13 results from an estimated 13 matches similar to: ""Survey" package and NAMCS data... unsure of specification"
2005 Sep 13
1
Anyone have any code for importing data from NAMCS?
The National Ambulatory and Medical Care Survey is a free data set from the
CDC that I'd like to analyze using the "Survey" package in R. Before I dive
in, though, it occurred to me that someone may already have gone to the
trouble of writing code that will bring in the data and assign the variable
names and value labels. This is a big file, so doing it from scratch will
take
2012 Aug 10
1
Direct Method Age-Adjustment to Complex Survey Data
Hi everyone, my apologies in advance if I'm overlooking something simple in
this question. I am trying to use R's survey package to make a direct
method age-adjustment to some complex survey data. I have played with
postStratify, calibrate, rake, and simply multiplying the base weights by
the correct proportions - nothing seems to hit the published numbers on the
nose.
I am trying to
2009 Apr 05
4
predicting values into the future
Hi:
I have usually used the GROWTH() excel function to do this but now want to see if I can do this with R.
I want to predict values into the future, possibly with the predict.arima Function.
I have the following weekly fish weight averages:
weight <- c("2.1","2.4","2.8","3.6","4.1","5.2","6.3")
week <-
2018 Mar 22
1
exporting data to stata
On Thu, Mar 22, 2018 at 4:52 AM, Raja, Dr. Edwin Amalraj
<amalraj.raja at abdn.ac.uk> wrote:
> Hi ,
>
> library(foreign)
> write.dta(data1, "data1.dta")
>
> should work.
I don't think so:
> library(foreign)
> example(svydesign)
> write.dta(dstrat, "~/Downloads/foo.dta")
Error in write.dta(dstrat, "~/Downloads/foo.dta") :
The
2012 Sep 21
1
Exactly Replicating Stata's Survey Data Confidence Intervals in R
Hi everyone, apologies if the answer to this is in an obvious place. I've
been searching for about a day and haven't found anything..
I'm trying to replicate Stata's confidence intervals in R with the survey
package, and the numbers are very very close but not exact. My ultimate
goal is to replicate Berkeley's SDA website with R (http://sda.berkeley.edu/),
which seems to
2013 Apr 12
2
model frame and formula mismatch in model.matrix()
Hello everyone,
I am trying to fit the following model
All X. variables are continuous, while the conditions are categoricals.
model <- lm(X2
2008 Sep 23
1
Weights for polr
Hello,
I'm estimating an ordered logit model on a probability weighted survey
sample. polr permits case weights with the "weights" option, but I cannot
figure out from existing documentation what it actually does with these
weights. I'm concerned about this because I get somewhat different
results using Stata's ologit command with the pweights option and very
2011 May 18
1
Need expert help with model.matrix
Dear experts:
Is it possible to create a new function based
on stats:::model.matrix.default so that an alternative factor coding is used
when the function is called instead of the default factor coding?
Basically, I'd like to reproduce the results in 'mat' below, without having
to explicitly specify my desired factor coding (identity matrices) in the
'contrasts.arg'.
dd
2009 May 05
0
stepAICc function (based on MASS:::stepAIC.default)
Dear all,
I have tried to modify the code of MASS:::stepAIC.default(), dropterm() and addterm() to use AICc instead of AIC for model selection.
The code is appended below. Somehow the calculations are still not correct and I would be grateful if anyone could have a look at what might be wrong
with this code...
Here is a working example:
##
require(nlme)
model1=lme(distance ~ age + Sex, data =
2011 Mar 26
0
Sampling Weights in HB Choice Modelling (e.g., rhierMnlRwMixture)
Is anyone familiar with a way to account for sampling weights (e.g., in order
to cope with selection bias) for individual respondents using the bayesm
package (e.g., rhierMnlRwMixture)?
In the regular MNL this can easily be done in STATA using the mlogit
function with pweights option. However, I am unfamiliar with a way to do it
in HB estimation.
Any help or hints are appreciated.
Best, Klaus
2008 Apr 04
2
suggested minor patch for optim.R
optim ignores misspelled control parameters, so that trying
to set (e.g.) "maxint=1000" in the control argument silently
does nothing. The patch below (watch out for line breaks! also
posted at http://www.zoo.ufl.edu/bolker/optim_patch.R , and
http://www.zoo.ufl.edu/bolker/optim_new.R) adds
three lines to optim.R that issue a warning if any names of
elements of "control" fail
2008 Sep 09
1
survey package
Version 3.9 of the survey package is now on CRAN. Since the last
announcement (version 3.6-11, about a year ago) the main changes are
- Database-backed survey objects: the data can live in a SQLite (or other
DBI-compatible) database and be loaded as needed.
- Ordinal logistic regression
- Support for the 'mitools' package and multiply-imputed data
- Conditioning plots,
2008 Sep 09
1
survey package
Version 3.9 of the survey package is now on CRAN. Since the last
announcement (version 3.6-11, about a year ago) the main changes are
- Database-backed survey objects: the data can live in a SQLite (or other
DBI-compatible) database and be loaded as needed.
- Ordinal logistic regression
- Support for the 'mitools' package and multiply-imputed data
- Conditioning plots,