Rough approximation of the between-study variance based on
assumption about the typical sample size of studies included in the
synthesis
Usage
tau2_approximation(sample_size = 100, es, df_minus2 = TRUE)
Arguments
- sample_size
Typical sample size of studies
- es
Smallest effect size of practical concern
- df_minus2
If degrees of freedom should be df-2 or just df
Value
A tibble with small, medium, and large magnitudes of tau2
Examples
tau2_approximation(
sample_size = 50,
es = 0.1,
df_minus2 = TRUE
)
#> tau2
#> small 0.027
#> medium 0.080
#> large 0.240