UdderQuarterInfectionData: Udder Quarter Infection Data

Description Author(s) References

Description

This package is built up around a data set consisting of clustered infection times in the four udder quarters of cows. Due to the special structure of these data, i.e., quadruples of four clustered event times, thye have been used to develop new techniques in the area of multivariate survival data (see references). This package avails the data on which the analyses presented in the papers were based, and also, where possible, provides the R-code to fit the proposed models.

Author(s)

Hans Laevens

Luc Duchateau

Klara Goethals

Ewoud de Troyer

Paul Janssen

References

Laevens, H., Deluyker, H., Schukken, Y.H., De Meulemeester, L., Vandermeersch, R., De Muelenaere, E. and De Kruif, A. (1997). Influence of parity and stage of lactation on the somatic cell count in bacteriologically negative dairy cows. Journal of Dairy Science 80, 3219-3226.

Massonnet, G., Janssen, P. and Duchateau, L. (2009). Modelling udder infection data using copula models for quadruples. Journal of Statistical Planning and Inference 139, 3865-3877.

Goethals, K., Ampe, B., Berkvens, D., Laevens, H., Janssen, P. and Duchateau, L. (2009). Modeling interval-censored, clustered cow udder quarter infection times through the shared gamma frailty model. Journal of Agricultural Biological and Environmental Statistics 14, 1-14.

Janssen, P. and Duchateau, L. (2011). Comments on: Inference in multivariate Archimedean copula models. Test 20, 271-275.

Ampe, B., Goethals, K., Laevens, H. and Duchateau, L. (2012). Investigating clustering in interval-censored udder quarter infection times in dairy cows using a gamma frailty model. Preventive Veterinary Medicine 106, 251-257.

Kuhn, E., Goethals, K., El-Nouty, C. and Duchateau, L. (2016). Assessing the correlation structure in cow udder quarter infection times through extensions of the correlated frailty model. Journal of Agricultural Biological and Environmental Statistics 21, 601-618.

Geerdens, C., Claeskens, G., Janssen, P. (2016). Copula based flexible modeling of associations between clustered event times. Lifetime data analysis 22, 363-381.

Verbelen, R., Antonio, K. and Claeskens, G. (2016). Multivariate mixtures of Erlangs for density estimation under censoring. Lifetime data analysis 22, 429-455.

Prenen, L., Duchateau, L. and Braekers, R. (2018). Investigating the correlation structure of quadrivariate udder infection times through hierarchical Archimedean copulas. Accepted for publication in Lifetime Data Analysis.


UdderQuarterInfectionData documentation built on May 2, 2019, 8:45 a.m.