An LMS-based maximum likelihood method of fitting age-related reference ranges is extended to incorporate non-independent measurements by including the matrix of the correlations between standard normalized repeat measurements into the likelihood. The likelihood is maximized via iterative re-estimat
Estimation of age-specific reference ranges via smoother AVAS
โ Scribed by Toshiro Tango
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 180 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0277-6715
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โฆ Synopsis
This paper proposes a new non-parametric procedure to estimate age-dependent reference ranges based on Tibshirani's AVAS (additivity and variance stabilization) procedure for non-parametric estimation of transformations for regression. Several examples are given to illustrate the flexibility and applicability of the proposed method; these include alkaline phosphatase in girls, and foot length and head circumference during gestation.
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