search for: nchs

I am a physician examining an NHANES dataset available at the NCHS website: http://www.cdc.gov/nchs/about/major/nhanes/nhanes2005-2006/demo_d.xpt http://www.cdc.gov/nchs/about/major/nhanes/nhanes2005-2006/hdl_d.xpt http://www.cdc.gov/nchs/about/major/nhanes/nhanes2005-2006/tchol_d.xpt Thank you to the R authors and the foreign package authors in particular....

...(STRATAVAR) vce(linearized) svy: mean VARNAME, stdize(agecat) stdweight(agewt) the stdvar and stdwgt parameters from a SUDAAN proc descript call the ESTIMATE statement in a PROC SURVEYREG (used to generate adjusted means) in SAS version 9.2 I am attempting to match figure 1 from nchs data brief #92 exactly using R. The data are here: http://www.cdc.gov/nchs/data/databriefs/db92_fig1.png and the full brief is here: http://www.cdc.gov/nchs/data/databriefs/db92.htm This is the National Health and Nutrition Examination Survey, produced by the US CDC. The CDC has published a bun...

...age/length) for children with diagnosis that impacts weight/length. But we we don't know how to use R for producing growth charts. We are collection data of Age, Weight and Length. The data are used to produce diagnosis-specific Growth charts (like the CDC Growth Charts: http://www.cdc.gov/nchs/data/nhanes/growthcharts/set1clinical/cj41l017.pdf) Data-example is in the UsingR package as data(kid.weights). In the CDC-papers a LMS approch is described. Cole has programmed the methology (I guess) in a <R 2.0.0 package called lmsqreg: """ > library(lmsqreg) Error in libr...

Dear List, I have a dataset that provides sampling weights (National Survey of Family Growth 2002). I want to produce a cross-tabulation and use the provided sampling weights to obtain representative population estimates. (I believe they are simply frequency weights but codebook is uninformative). I can reproduce results (using this data) that were reported in a recent journal article, if I

Hi, I have been experimenting with the new Survey package. Specifically, I was trying to use some of the functions on the public-use survey data from NHIS (2000 Sample Adult file). Error 1): The first error I get is when I try to specify the complex survey design. nhis.design<-svydesign(ids=~psu, probs=~probs, strata=~strata, data=nhis.df, check.strata=TRUE) Error in svydesign(ids =

hello, I am trying to do exploratory factor analysis with BRFSS dataset ( http://www.cdc.gov/brfss/technical_infodata/surveydata/2008.htm) for a couple of days, but I was not able to do that and got frustrated. Can anybody help me with step by step guide? BRFSS dataset provides ASCII or SAS format. Thank you. chloe [[alternative HTML version deleted]]

Hi, I have a need to process (in real-time) a large number of .sas7bdat files from within R. The problem is I don't want to convert these files to .xpt (transport) every time. So just checking if anyone has a (viable) way to read .sas7bdat files directly into R? Thank You. //---------------------------------- // Alex Bryant // Software Developer // Integrated Clinical systems //

...ent your estimate was close. This is how probabilities are often computed for events far too complicated to analyze theoretically. For example, consider a health-related probability. The National Center for Health Statistics, a division of the Center for Disease Control, (http://www.cdc.gov/nchs) collects and publishes data of a health related nature. The web site mostly contains data that have been already statistically summarized along with a variety of factoids. The "FASTATS A to Z" link off the main page leads to an alphabetical list of topics that are interesting to peruse....

I've been trying to get some data from the National Survey for Family Growth into R - however, the data is in a .dat file and the data I need doesn't have any spaces or commas separating fields - rather you have to look into the codebook and what number of digits along the line the data you need is. The data I want are the following, where 1,12,int means that the data I'm interested