PERCENTILE SMOOTHING USING PIECEWISE POLYNOMIALS, WITH COVARIATES

被引:23
作者
GOLDSTEIN, H
PAN, HQ
机构
[1] Institute of Education, University of London, London WC1H 0AL
关键词
CONSTRAINED ESTIMATION; GROWTH; NONPARAMETRIC METHODS; PERCENTILE ESTIMATION; PIECEWISE POLYNOMIAL; SMOOTHING;
D O I
10.2307/2532698
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
A nonparametric procedure for the joint smoothing of a series of percentile curves is presented. It allows separate curves to be fitted over contiguous age ranges, constraining them to join smoothly. Covariates can be incorporated, thus allowing efficient estimation simultaneously for subgroups.
引用
收藏
页码:1057 / 1068
页数:12
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