SEp_from_TE.p {metaHelper}

Standard Error from Treatment Effect and p-Value

Description

Calculates the pooled standard error using the treatment effect and p-value. To avoid an infinitive return when p-value = 1, the p-value is automatically adjusted to 0.99999

Usage

SEp_from_TE.p(TE, p, two_tailed = TRUE)

Arguments

TE

reported treatment effect

p

reported p-value

two_tailed

whether one-tailed or two-tailed statistics should be calculated

Value

Pooled standard error (e.g. standard error of intervention effect)

References

Altman D G, Bland J M. How to obtain the confidence interval from a P value BMJ 2011; 343 :d2090 doi:10.1136/bmj.d2090 Cochrane Handbook

Examples

# TE = 1.5, p = 0.8
SEp_from_TE.p(1.5, 0.8)