dicho.t.r: t from dichotomizing/extreme group design to r

In phoebehlam/michaela: convert statistical metrics for meta-analytic purpose

t from dichotomizing/extreme group design to r

Description

t-statistics from dichotomizing/extreme group design to correlation coefficient
see pustejovsky, 2014. psychological methods.
returns extreme group r (referred to as r (subscript eg) in pustejovsky paper)
for unadjusted statistics only

Usage

dicho.t.r(t, totn, n1, n2, p1, p2, dir)

Arguments

t	t-statistics
n1	cell size of group 1
n2	cell size of group 2
p1	cutoff percentile for group 1 (sample-based, please see other formulas for population-based in pustejovsky, 2014)
p2	cutoff percentile for group 2 (sample-based, please see other formulas for population-based in pustejovsky, 2014)
dir	if cohen's d is in absolute value, provide the empirical direction: +1 for positive associations (e.g., group 1 - group 2 >= 0) and -1 for negative associations (e.g., group 1 - group 2 < 0)

Examples

dicho.t.r(2.05, 1/3, 1/3, 15, 15, -1)

phoebehlam/michaela documentation built on Oct. 23, 2024, 4:10 p.m.