This function calculates the \(I^2\) statistic.
To use it for the \(I^2_{GX}\) metric ensure that the effects are all the same sign (e.g. abs(y)).
This function calculates the \(I^2\) statistic.
To use it for the \(I^2_{GX}\) metric ensure that the effects are all the same sign (e.g. abs(y)).