Draw event times for interval-censored subjects from the conditional hazard

Source: R/impute-ic.R

For a fitted PAMM with piecewise-constant hazard, draws \(T_i \sim p(T \mid L_i < T \le R_i, x_i, \theta)\) by inverting the cumulative-hazard increment between \(L_i\) and \(R_i\). Exact and right-censored observations are returned unchanged (right-censored subjects are not imputed: they contribute correctly as censored at ic_L).

impute_ic_times(object, ic, cut, beta = NULL, cache = NULL)

Arguments

object

A fitted pamm model used as imputation model.

ic

A data frame as returned by parse_ic_surv (subject- level, with covariates and ic_L/ic_R/ic_kind).

cut

The fixed vector of interval cut-points (shared across imputations).

beta

Coefficient vector to evaluate the hazard at. Defaults to coef(object); pass a posterior draw for proper multiple imputation.

cache

Optional pre-built cache from ic_pred_cache; avoids recomputing the (expensive) design matrix across imputations.

Value

Numeric vector of (possibly imputed) event times, length nrow(ic).