se.mean2: Computes the standard error for a 2-group mean difference

In dgbonett/vcmeta: Varying Coefficient Meta-Analysis

Computes the standard error for a 2-group mean difference

Description

This function computes the standard error of a 2-group mean difference using the estimated means, estimated standard deviations, and sample sizes. The effect size estimate and standard error output from this function can be used as input in the meta.ave.gen, meta.lc.gen, and meta.lm.gen functions in applications where compatible mean differences from a combination of 2-group and paired-samples experiments are used in the meta-analysis. Equality of variances is not asumed.

Usage

se.mean2(m1, m2, sd1, sd2, n1, n2)

Arguments

m1	estimated mean for group 1
m2	estimated mean for group 2
sd1	estimated standard deviation for group 1
sd2	estimated standard deviation for group 2
n1	sample size for group 1
n2	sample size for group 2

Value

Returns a one-row matrix:

• Estimate - estimated mean difference

• SE - standard error

References

\insertRef

Snedecor1980vcmeta

Examples

se.mean2(21.9, 16.1, 3.82, 3.21, 40, 40)

#                   Estimate        SE
# Mean difference:       5.8 0.7889312

dgbonett/vcmeta documentation built on July 12, 2024, 3:12 p.m.