Standardize Means Pairwise

Provides standardized effect sizes and their confidence intervals for all unadjusted pairwise comparisons.

Usage

# S3 method for data.frame
standardizeMeansPairwise(frame, mu=0, conf.level=.95, ...)

# S3 method for formula
standardizeMeansPairwise(formula, mu=0, conf.level=.95, ...)

# S3 method for wsm
standardizeMeansPairwise(moments, mu=0, conf.level=.95, ...)

# S3 method for bsm
standardizeMeansPairwise(moments, mu=0, conf.level=.95, ...)

Arguments

frame

a set of (non-empty) numeric vectors of data values

formula

a formula of the form lhs ~ rhs where lhs is a numeric variable giving the data values and rhs a factor giving the corresponding groups

moments

a matrix/frame of descriptive/summary statistics

mu

a number indicating the true/hypothesized value of the mean difference

conf.level

confidence level of the interval

Value

The returned frame contains the following components:

d

the standardized mean differences

SE

the standard errors of the standardized mean differences

LL

the lower limits of the confidence intervals of the standardized mean differences

UL

the upper limits of the confidence intervals of the standardized mean differences

References

Bonett, D. G. (2008). Confidence intervals for standardized linear contrasts of means. Psychological Methods, 13(2), 99-109.