survRate {biostat3} | R Documentation |
Describe rates
Description
Describe rates using the Surv
function.
Usage
survRate(formula, data, subset, addvars = TRUE, ci=TRUE, ...)
Arguments
formula |
formula with the left-hand-side being a |
data |
source dataset |
subset |
subset conditions for the source dataset |
addvars |
logical for whether to add the stratification variables to the output (default=TRUE). This is useful for subsequent analysis. |
ci |
logical for whether to calculate the confidence interval (default=TRUE). |
... |
other arguments to the |
Value
data-frame with columns tstop
, event
, rate
,
lower
and upper
. Covariates are appended if
addvar=TRUE
.
Confidence intervals use stats::poisson.test
.
Examples
## incidence rates for CHD for low- or high-energy diets
survRate(Surv(y,chd) ~ hieng, data=diet)
[Package biostat3 version 0.1.9 Index]