cor.multcomp: Comparison of several Pearson's linear correlation...

In RVAideMemoire: Testing and Plotting Procedures for Biostatistics

Comparison of several Pearson's linear correlation coefficients

Description

Performs comparisons of several Pearson's linear correlation coefficients. If no difference, the function returns the common correlation coefficient, its confidence interval and test for its equality to a given value. If the difference is significant, the functions performs pairwise comparisons between coefficients.

Usage

cor.multcomp(var1, var2, fact, alpha = 0.05, conf.level = 0.95, theo = 0,
  p.method = "fdr")

Arguments

var1	numeric vector (first variable).
var2	numeric vector (second variable).
fact	factor (groups).
alpha	significance level.
conf.level	confidence level.
theo	theoretical coefficient.
p.method	method for p-values correction. See help ofp.adjust.

Value

method.test	a character string giving the name of the global test computed.
data.name	a character string giving the name(s) of the data.
statistic	test statistics.
parameter	test degrees of freedom.
p.value	p-value for comparison of the coefficients.
null.value	the value of the difference in coefficients under the null hypothesis, always 0.
alternative	a character string describing the alternative hypothesis.
estimate	the estimated correlation coefficients.
alpha	significance level.
conf.level	confidence level.
p.adjust.method	method for p-values correction.
p.value.multcomp	data frame of pairwise comparisons result.
common.name	a character string explaining the elements of the table below.
common	data frame of results if the coefficients are not significantly different (common coefficient).

Author(s)

Maxime HERVE <[e-mail]>

See Also

cor.test

Examples

var1 <- c(1:15+rnorm(15,0,4),1:15+rnorm(15,0,1),1:15+rnorm(15,0,8))
var2 <- c(-1:-15+rnorm(15,0,4),1:15+rnorm(15,0,1),1:15+rnorm(15,0,8))
fact <- gl(3,15,labels=LETTERS[1:3])
cor.multcomp(var1,var2,fact)

var3 <- c(1:15+rnorm(15,0,1),1:15+rnorm(15,0,3),1:15+rnorm(15,0,2))
cor.multcomp(var1,var3,fact)

RVAideMemoire documentation built on Nov. 6, 2023, 5:07 p.m.