Calculates the risk ratio (RR) and standard error.
risk_ratio
Calculates the risk ratio and standard error.
risk_ratio(y, x, formula, data)
y
: 0-1 binary response variable.x
: 0-1 binary independent variable.formula
: A formula object to specify the model as normally used by glm.data
: An objects of class milist
, created by df2milist
, list2milist
or mids2milist
.The risk ratio, related standard error and complete data degrees of freedom (dfcom) as n-2.
Note that the standard error of the RR is in fact the standard error of the (natural) risk ratio.
imp_dat <- df2milist(lbpmilr, impvar="Impnr") ra <- with(imp_dat, expr=risk_ratio(Chronic ~ Radiation))
with.milist
Martijn Heymans, 2021