Characterization of the variable cow's age at last calving as a measurement of longevity by using the Kaplan-Meier estimator and the Cox model

S. L. Caetano,Guilherme J. M. Rosa,R. P. Savegnago,S. B. Ramos,L. A. F. Bezerra,R. B. Lôbo,C.C.P. de Paz,D. P. Munari

Characterization of the variable cow's age at last calving as a measurement of longevity by using the Kaplan-Meier estimator and the Cox model

2013

S. L. Caetano
Guilherme J. M. Rosa
R. P. Savegnago
S. B. Ramos
L. A. F. Bezerra
R. B. Lôbo
C.C.P. de Paz
D. P. Munari

Departamento de Ciencias Exatas Faculdade de Ciencias Agrarias e Veterinarias (FCAV) Universidade Estadual Paulista (UNESP), CEP 14884-900, Jaboticabal, SP

Keywords:

Demography
Proportional hazards model
Beef cattle
Longevity
Endocrinology
Ice calving
Kaplan–Meier estimator
Internal medicine
Biology
biological modeling

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