Question_PROC NLMIX in NHANES

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Question_PROC NLMIX in NHANES

Is it possible to use PROC NLMIX using NHANES data, taking into account the clustering and weighting?

Or can this procedure be only used in an unweighted analysis ?

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Re: Question_PROC NLMIX in NHANES

It will depend on the version of SAS/STAT that you have available.  Use of the REPLICATE statement could allow you to weight things appropriately, provided that 1) no SUBJECT= variable is specified, and 2) there is only a single RANDOM statement.  I am not familiar enough with the NHANES data to say whether or not a valid analysis could be set up under these restrictions.

Steve Denham

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