Apply the inverse normal method (Hedges and Olkin, 1985). For each data set, combine the Z-scores or Z-tests and divide them by the square root of the sample size of the data set.
Usage
inv.normal(i, zstat)
Arguments
i
Vector of integer variables containing the indices of data sets.
zstat
List of numeric vectors representing Z-tests or Z-scores.
Value
Vector of combined Z-tests.
Warning
This function is not called by the user directly.
References
L. V. Hedges and I. Olkin. Statistical Methods for Meta-Analysis. Academic Press,January 1985. ISBN 0123363802.