bcfrailphdv:Bivariate Correlated Frailty Models with Varied Variances
Fit and simulate bivariate correlated frailty models with proportional hazard structure. Frailty distributions, such as
gamma and lognormal models are supported for semiparametric
procedures. Frailty variances of the two subjects can be varied
or equal. Details on the models are available in book of Wienke
(2011,ISBN:978-1-4200-7388-1). Bivariate gamma fit is obtained
using the approach given in Iachine (1995) with modifications.
Lognormal fit is based on the approach by Ripatti and Palmgren
(2000) <doi:10.1111/j.0006-341X.2000.01016.x>. Frailty
distributions, such as gamma, inverse gaussian and power
variance frailty models are supported for parametric approach.
