XRIML: Stata module for estimation of reference intervals ('normal ranges') by maximum likelihood
Abstractxriml calculates cross-sectional reference intervals for yvar, which is assumed to follow one of 6 possible distributions. The parameters are estimated by maximum likelihood. If xvar is specified, reference intervals for yvar conditional on xvar are estimated. Typically, xvar is age. The parameters of the distribution are modelled as functions of xvar using fractional polynomials (see help fracpoly).
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Bibliographic InfoSoftware component provided by Boston College Department of Economics in its series Statistical Software Components with number S457229.
Programming language: Stata
Requires: Stata version 8
Date of creation: 22 Jan 2011
Date of revision:
Note: This module should be installed from within Stata by typing "ssc install xriml". Windows users should not attempt to download these files with a web browser.
Contact details of provider:
Postal: Boston College, 140 Commonwealth Avenue, Chestnut Hill MA 02467 USA
Web page: http://fmwww.bc.edu/EC/
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