lancaster {metapro}

Lancaster

Description

P-value combination based on Lancaster's procedure

Usage

lancaster(p, weight, is.onetail = TRUE, eff.sign)

Arguments

p

A numeric vector of p-values

weight

A numeric vector of weights (e.g., samples sizes)

is.onetail

Logical. If set TRUE, p-values are combined without considering the direction of effect, and vice versa. Default: TRUE.

eff.sign

A vector of signs of effect sizes (1 or -1). It works when is.onetail = FALSE

Value

p : Combined p-value

overall.eff.direction : The direction of combined effects.

References

Becker BJ (1994). “Combining significance levels.” In Cooper H, Hedges LV (eds.), A handbook of research synthesis, 215–230. Russell Sage, New York.

Lancaster HO (1949). “Combination of probabilities arising from data in discrete distributions.” Biometrika, 36, 370–382.

Examples

lancaster(p=c(0.01,0.2,0.8), weight=c(20,50,10), is.onetail=FALSE, eff.sign=c(1,1,1))