simPH: An R package for simulating and plotting quantities of interest from Cox Proportional Hazard models.

Description

An R package for simulating and plotting quantities of interest (relative hazards, first differences, and hazard ratios) for linear coefficients, multiplicative interactions, polynomials, penalised splines, and non-proportional hazards, as well as stratified survival curves from Cox Proportional Hazard models.

The package includes the following simulation functions:

coxsimLinear:

{a function for simulating relative hazards, first differences, hazard ratios, and hazard rates for linear, non-time interacted covariates from Cox Proportional Hazard (coxph) models.} coxsimtvc:{a function for simulating time-interactive hazards (relative hazards, first differences, and hazard ratios) for covariates from Cox Proportional Hazard models. The function will calculate time-interactive hazard ratios for multiple strata estimated from a stratified Cox Proportional Hazard model.} coxsimSpline:{a function for simulating quantities of interest from penalised splines using multivariate normal distributions. Currently does not support simulating hazard rates from stratified models. Note: be extremely careful about the number of simulations you ask the function to find. It is very easy to ask for more than your computer can handle.} coxsimPoly:{a function for simulating quantities of interest for a range of values for a polynomial nonlinear effect from Cox Proportional Hazard models.} coxsimInteract:{a function for simulating quantities of interest for linear multiplicative interactions, including marginal effects and hazard rates.}

Arguments

code

Xj

itemize

SurvExpand:

item

tvc:
setXl:

eqn

$Xl$