Zhiqiang Wang
> My colleague is seeking advice on Stata procedures for generating
> conditional growth intervals using the method described by
> Patrick Royston.
>
> Reference: Royston P(1995) Calculation of unconditional and
> conditional
> reference intervals for foetal size and growth from longitudinal
> measurements. Statistics in Medicine 14:1417-1436.
>
> Data look like:
> id age weight
> 1 0 2.8
> 1 3 5.7
> 1 6 7.2
> 1 12 9.0
> 2 0 3.2
> 2 3 6.0
> 2 6 8.5
> 2 12 10.6
> ...
> Question is how to get standard deviation scores of
> achieved weight at each
> time point contional on previous weight.
See a series of inserts by Eileen Wright
and Patrick Royston in the STB.
. search wright, author
will yield the references. Otherwise
please note that Patrick is not
a member of Statalist.
Nick
[email protected]
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