prop.trend.test {stats} | R Documentation |
Test for trend in proportions
Description
Performs chi-squared test for trend in proportions, i.e., a test
asymptotically optimal for local alternatives where the log odds vary
in proportion with score
. By default, score
is chosen
as the group numbers.
Usage
prop.trend.test(x, n, score = seq_along(x))
Arguments
x |
Number of events |
n |
Number of trials |
score |
Group score |
Value
An object of class "htest"
with title, test statistic, p-value,
etc.
Note
This really should get integrated with prop.test
Author(s)
Peter Dalgaard
See Also
Examples
smokers <- c( 83, 90, 129, 70 )
patients <- c( 86, 93, 136, 82 )
prop.test(smokers, patients)
prop.trend.test(smokers, patients)
prop.trend.test(smokers, patients, c(0,0,0,1))
[Package stats version 4.4.1 Index]