dataPrep {vitality}

Function for data preparation

Description

Function to deal with NAs, right truncated data, and datatype (i.e. cumulative survival or incremental mortality).

Usage

  dataPrep(time, sdata, datatype, rc.data,
    returnMatrix = FALSE)

Arguments

time

A vector of observation dates

sdata

A vector of survival data of the same length as time

datatype

either "CUM" for cumulative or "INC" for incremental

rc.data

Boolean. Is data right-censored?

returnMatrix

Boolean. False returns a data frame, true returns a matrix. (as in the original), if "matrix" returns a matrix instead, with the "rc.data" column being 0 for FALSE, 1 for TRUE, or 2 for TF

Details

This function is designed for use in the primary vitality model fitting functions in this package. See package documentation.

Value

Returns a data.frame or matrix with columns time, sfract, x1, x2, Ni (incremental survival fraction), rc.data.