SDp_from_SEp {metaHelper}

Standard Deviation from the Pooled Standard Error

Description

IMPORTANT: For a single group, use SD_from_SE()! Calculates the standard deviation from the pooled standard error and sample sizes of two groups (e.g., for intervention effects). This method is the reverse of SEp_from_SDp().

Usage

SDp_from_SEp(SEp, n1, n2)

Arguments

SEp

pooled standard error

n1

sample size group 1

n2

sample size group 2

Value

Pooled standard deviation

References

Cochrane Handbook

See Also

SD_from_SE() for a single group. SEp_from_SDp() if the standard error should be computed instead.

Examples

#pooled standard error, sample size 1 and sample size 2
SE <- 0.12
n1 <- 140
n2 <- 140

SDp_from_SEp(SE, n1, n2)