nimare.meta.esma
.weighted_stouffers¶
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weighted_stouffers
(z_maps, sample_sizes, two_sided=True)[source]¶ Run a Stouffer’s image-based meta-analysis on z-statistic maps.
Parameters: - z_maps ((n_contrasts, n_voxels)
numpy.ndarray
) – A 2D array of z-statistic maps in the same space, after masking. - sample_sizes ((n_contrasts,)
numpy.ndarray
) – A 1D array of sample sizes associated with contrasts inz_maps
. Must be in same order as rows inz_maps
. - two_sided (
bool
, optional) – Whether to do a two- or one-sided test. Default is True.
Returns: result – Dictionary containing maps for test statistics, p-values, and negative log(p) values.
Return type: - z_maps ((n_contrasts, n_voxels)