na2zero

<p>a character string vector of variables names in <code>DT</code>;
if <code>NULL</code>, uses all variable names in <code>DT</code></p>

vars

<p>Given a <code>data.table DT</code>, replaces any <code>NA</code> values
in the variables given in <code>vars</code> in <code>DT</code>. Takes a copy of the 
original data and returns the modified copy.</p>

Enables computation of epidemiological statistics where e.g.
counts or mortality rates of the reference population are used. Currently
supported: excess hazard models, rates, mean survival times, relative
survival, as well as standardized incidence and mortality ratios (SIRs/SMRs),
all of which can be easily adjusted for e.g. age.
Fast splitting and aggregation of 'Lexis' objects (from package 'Epi')
and other computations achieved using 'data.table'.

Joonas Miettinen

popEpi

na2zero: Convert NA's to zero in data.table

Description

Usage

Arguments

Details