An internal function meant only to be used by the covariance function.
h(t_i, delta_i, beta, time, z, S0_i, S1_i)A numeric value described in Lin et al. (1994).
The follow up times.
Indicator that the individual was censored: 1 if the individual was censored, 0 otherwise.
The coefficients of the Cox model.
Survival time.
Covariates for survival time.
Object described in Lin et al. (1994), slightly modified for computationnal efficiency. It is obtained with function1.
Object described in Lin et al. (1994), slightly modified for computationnal efficiency. It is obtained with function1.
Denis Talbot, Thierry Duchense, Jacques Brisson, Nathalie Vandal.
This is an internal function, only meant to be used by the covariance function.
Lin D.Y., Fleming T.R., Wei L.J. (1994) Confidence bands for survival curves under the proportional hazards model, Biometrika, 81 (1): 73-81.
covariance