num.id

A character or numeric variable which is supposed to indicate 
the variable identifying individuals

This is a special function used in addition to the <code>cluster()</code> function in the context of survival joint models
for clustered data. This function identifies subject index. It is used on the right hand
side of a 'frailtyPenal' formula. Using <code>num.id()</code> in a formula implies that
a joint frailty model for clustered data is fitted (Rondeau et al. 2011).

misc

Frailtypack fits several classes of frailty models using a penalized likelihood
        estimation on the hazard function but also a parametric estimation.
        1) A shared frailty model (with gamma or log-normal frailty distribution) and Cox
        proportional hazard model. Clustered and recurrent survival times can be studied.
        2) Additive frailty models for proportional hazard models with two correlated
        random effects (intercept random effect with random slope).
        3) Nested frailty models for hierarchically clustered data (with 2 levels of
        clustering) by including two iid gamma random effects.
        4) Joint frailty models in the context of joint modelling for recurrent events
        with terminal event for clustered data or not.
        Prediction values are available. Left-truncated (not for Joint model),
        right-censored data, interval-censored data (only for Cox proportional hazard
        and shared frailty model) and strata are allowed. In each model,
        the random effects have a gamma distribution, but you can switch to a log-normal
        in shared and joint models. Now, you can also consider time-varying covariates
        effects in Cox, shared and joint models. The package includes concordance measures
        for Cox proportional hazards models and for shared frailty models.

num.id: Identify individuals in Joint model for clustered data

Description

Usage

Arguments

References

See Also

Examples