[R] Anthropometric calculations with R

David Winsemius dwinsemius at comcast.net
Wed Oct 28 15:55:51 CET 2009

On Oct 28, 2009, at 10:18 AM, David Winsemius wrote:

> You might want to take a look at this article by WEI,  PERE,  
> KOENKER, AND HE. Its in the research files of Koenker who is a  
> regular contributor to R-help:
> http://www.econ.uiuc.edu/~roger/research/growth/growth.pdf
> In particular it mentions lmsqreg, which would be a package that  
> implements the L M S methodology used by the CDC to produce these  
> files. the above paper discusses that package as a starting point  
> and then offers an alternative using quantreg.
> The lmsqreg package can be acquired with this code:
> install.packages("lmsqreg", repos="http://R-Forge.R-project.org")
> library(lmsqreg)
> There is a function, zscores, that might illustrate how to apply the  
> L, M, S columns in those CDC datasets. You might consider posting on  
> the Bioconductor list if these queries are unsuccessfl or contacting  
> Vincent Carey, who is a Bioconductor Core member and appears to have  
> done quite a bit of work in related areas:
> http://biosun1.harvard.edu/~carey/
> (I have taken the liberty of correcting the spelling of the subject  
> line so it can be found on searches more easily. Seems possible that  
> searching with that alternate spelling might improve your subsequent  
> searches as well.)

I had corrected the subject line in my response to Orvalho (not  
noticing that he had not copied the list in his reply to me), but he  
then pointed out to me that this may be of general interest, and I  
suggested that I should be the one to send a copy to r-help. I then  
forgot to substitute the English spelling of "anthropometric".

> -- 
> David
> On Oct 28, 2009, at 3:24 AM, Orvalho Augusto wrote:
>> Thanks!
>> Yes I want a program in R that uses that data and produce percentiles
>> and z-scores. Is there any ready program or not?
>> Caveman
>> On Wed, Oct 28, 2009 at 2:16 AM, David Winsemius <dwinsemius at comcast.net 
>> > wrote:
>>> On Oct 27, 2009, at 7:27 PM, Orvalho Augusto wrote:
>>>> Hey greate ones, is there any way to have something similar to  
>>>> stata
>>>> zanthro on R?
>>> I suppose it is possible that someone will know what is in that  
>>> stata
>>> package, but it would make more sense if you were to summarize  
>>> what features
>>> would be of use.
>>>> I want a package that contains functions to give antropometric  
>>>> values,
>>>> at least for the children.
>>> You are perhaps trying to map ht, weight, and head circumference to
>>> age-specific percentiles???
>>> http://www.cdc.gov/growthcharts/percentile_data_files.htm
>>> --
>>> David Winsemius, MD
>>> Heritage Laboratories
>>> West Hartford, CT
> David Winsemius, MD
> Heritage Laboratories
> West Hartford, CT
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> and provide commented, minimal, self-contained, reproducible code.

David Winsemius, MD
Heritage Laboratories
West Hartford, CT

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