prop.trend.test

From stats v3.2.5 by R-core R-core@R-project.org

Test for trend in proportions

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.

Keywords: htest

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

Examples

library(stats)

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))

Documentation reproduced from package stats, version 3.2.5, License: Part of R 3.2.5

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