Estimating growth charts via nonparametric quantile regression: a practical framework with application in ecology.

Muggeo, Vmr; Sciandra, M; Tomasello, A; Calvo, S

doi:10.1007/s10651-012-0232-1

We discuss a practical and effective framework to estimate reference growth charts via regression quantiles. Inequality constraints are used to ensure both monotonicity and non-crossing of the estimated quantile curves and penalized splines are employed to model the nonlinear growth patterns with respect to age. A companion R package is presented and relevant code discussed to favour spreading and application of the proposed methods.

Muggeo, V., Sciandra, M., Tomasello, A., & Calvo, S. (2013). Estimating growth charts via nonparametric quantile regression: a practical framework with application in ecology. ENVIRONMENTAL AND ECOLOGICAL STATISTICS, 20, 519-531.

Data di pubblicazione:	2013
Titolo:	Estimating growth charts via nonparametric quantile regression: a practical framework with application in ecology.
Autori:	MUGGEO, Vito Michele Rosario SCIANDRA, Mariangela TOMASELLO, Agostino CALVO, Sebastiano
Citazione:	Muggeo, V., Sciandra, M., Tomasello, A., & Calvo, S. (2013). Estimating growth charts via nonparametric quantile regression: a practical framework with application in ecology. ENVIRONMENTAL AND ECOLOGICAL STATISTICS, 20, 519-531.
Rivista:	ENVIRONMENTAL AND ECOLOGICAL STATISTICS
Digital Object Identifier (DOI):	http://dx.doi.org/10.1007/s10651-012-0232-1
Abstract:	We discuss a practical and effective framework to estimate reference growth charts via regression quantiles. Inequality constraints are used to ensure both monotonicity and non-crossing of the estimated quantile curves and penalized splines are employed to model the nonlinear growth patterns with respect to age. A companion R package is presented and relevant code discussed to favour spreading and application of the proposed methods.
Settore Scientifico Disciplinare:	Settore BIO/07 - Ecologia Settore SECS-S/01 - Statistica
Appare nelle tipologie:	1.01 Articolo in rivista

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http://hdl.handle.net/10447/75218

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