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st: Multiple imputation int() option in ICE
From
Alberto Osella <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: Multiple imputation int() option in ICE
Date
Thu, 18 Nov 2010 11:27:36 +0100
Dear Statalisters,
I'm using Stata 11.1 running on a Windows XP PC. I wisho to impute a
data set wit missing data in several variables of diferente type; one of
them (BMI) is a continuos variables with a normal distribution.
Obviuosly I should to bound BMI because there are some impossible values
as 0 or 1000. I wrote the following code using -ice-:
gen LL_BMI=15.32 (minimun value of BMI in my dataset)
gen UL_BMI=48.89 (maximun value of BMI in my dataset)
ice BMI NewStatCiv Professione1 TitStudio Num_nucleo , ///
m(20) cmd(BMI Num_nucleo: regress,
Professione1 NewStatCiv:mlogit, ///
TitStudio:ologit)
int(BMI:LL_BMI UL_BMI ) saving(imputed, replace)
but Stata return the following messagge:
LL_BMI is not a valid covariate
r(198);
Can you helop me. Thank you in advance.
--
Alberto R. Osella, MD, PhD
Laboratorio di Epidemiologia e Biostatistica
IRCCS Saverio de Bellis
Via Turi, 27
70013 Castellana Grotte (BA)
Italia
Tel: +39 0804994655
Fax: +39 0804994650
e-mail: [email protected]
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