SE.SMD_from_OR.CI: Standard Error of from Confidence Intervals of Odds Ratio

In metaHelper: Transforms Statistical Measures Commonly Used for Meta-Analysis

Standard Error of from Confidence Intervals of Odds Ratio

Description

Calculates the standard error from an odds ratio confidence interval.

Usage

SE.SMD_from_OR.CI(CI_low, CI_up, sig_level = 0.05, two_tailed = TRUE)

Arguments

CI_low	lower odds ratio confidence interval limit
CI_up	upper odds ratio confidence interval limit
sig_level	the significance level
two_tailed	whether the two-tailed or one-tailed z statistics should be calculated

Details

This method uses multiple steps in the background: 1 Takes odds ratio (OR) limits and transforms them to log(OR) 2 Calculates the standard error for the log(OR) 3 Transforms the log(OR) standard error to standardized mean differences (SMD) standard error by multiplying it with sqrt(3)/pi

Value

Standard Error

References

Chinn S. A simple method for converting an odds ratio to effect size for use in meta-analysis. Stat Med. 2000 Nov 30;19(22):3127-31. doi: 10.1002/1097-0258(20001130)

Examples

# lower CI = 0.6, upper CI = 0.9
SE.SMD_from_OR.CI(0.6, 0.9)

metaHelper documentation built on Sept. 11, 2024, 6:43 p.m.