Package: UdderQuarterInfectionData Type: Package Title: Udder Quarter Infection Data Version: 1.0.0 Date: 2017-09-06 Author: Hans Laevens, Luc Duchateau, Klara Goethals, Ewoud De Troyer and Paul Janssen Maintainer: Luc Duchateau Description: The udder quarter infection data set contains infection times of individual cow udder quarters with Corynebacterium bovis (Laevens et al. 1997 ). Obviously, the four udder quarters are clustered within a cow, and udder quarters are sampled only approximately monthly, generating interval-censored data. The data set contains both covariates that change within a cow (e.g., front and rear udder quarters) and covariates that change between cows (e.g., parity [the number of previous calvings]). The correlation between udder infection times within a cow also is of interest, because this is a measure of the infectivity of the agent causing the disease. Various models have been applied to address the problem of interdependence for right-censored event times. These models, as applied to this data set, can be found back in the publications found in the reference list. License: GPL-3 Encoding: UTF-8 LazyData: true RoxygenNote: 6.0.1 Imports: stats, utils NeedsCompilation: no Packaged: 2026-06-17 10:10:15 UTC; root Repository: https://lduchate.r-universe.dev Date/Publication: 2017-09-06 14:53:42 UTC RemoteUrl: https://github.com/cran/UdderQuarterInfectionData RemoteRef: HEAD RemoteSha: 465ead06a8df7390398a33af831b536f62cb88d0