Description Usage Arguments Value Author(s)
View source: R/02.ParepareDataWithinSites.R
Summarize stratum-specific event counts and total person-time by groups and return a list of lists containing events and ptime.
1 | SummarizeStratumEventsPtBy(event, time, by, strata, data)
|
event |
variable name of a binary event indicator variable (coded 0 or 1) in the data frame. |
time |
variable name of a follow-up time variable in the data frame. |
by |
variable name of a categorical variable used as a grouping variable. This should usually be a factor if called in a stratified analysis to avoid differential lengths. |
strata |
variable name of a stratifying variable. |
data |
data frame containing these variables. |
data frame containing one stratum and treatment-specific row of events
(event count) and denom
(person-time) for each stratum. When the data frame supplied is empty (0 rows), a single-row data frame filled with NA is returned.
Kazuki Yoshida
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