ec.mto {binMto}R Documentation

Exact conditional test for many-to-one comparisons of proportions

Description

This function calculates the exact distribution of the maximum of test statistics with unpooled variance estimators for the difference of many-to-one comparisons of proportion. Using this, p-values for the max-test are computed.

Usage

ec.mto(n, x, alternative = "less")

Arguments

n vector of integers specifying the number of trials in each group, where the first value is taken as control
x vector of integers specifying the number of successes in each group, where the first value is taken as control
alternative a character string, one of "two.sided", "greater", "less"

Value

a single numeric value, the p.value of the maximum test

Author(s)

Frank Schaarschmidt

References

Koch, HF and Hothorn, LA (1999): Exact unconditional distributions for dichotomous data in many-to-one comparisons. JSPI 82, 83-99 (section 2.1)

Examples


# Example from Koch and Hothorn (1999), Table 5:
# Chronic toxicity study in mice over six months.

ec.mto(n=c(40,20,20,20), x=c(4,1,6,8),
 alternative= "two.sided")

ec.mto(n=c(40,20,20,20), x=c(4,1,6,8),
 alternative= "less")

ec.mto(n=c(40,20,20,20), x=c(4,1,6,8),
 alternative= "greater")


[Package binMto version 0.0-3 Index]