impute_ic_times: Draw event times for interval-censored subjects from the...

In pammtools: Piece-Wise Exponential Additive Mixed Modeling Tools for Survival Analysis

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

Description

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).

Usage

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).

pammtools documentation built on Aug. 27, 2026, 1:08 a.m.