> Note that Ferguson had to calculate effect sizes for depression and anxiety in order to determine the composite effect size for those studies that contained these outcomes, but he did not include these results in his paper. When requested to provide the effect sizes he calculated for depression and anxiety, Ferguson replied that he is unable to do so. Furthermore, Ferguson even declined to reveal which aspects of well-being he selected for his calculation of each composite effect size (see Part 2 for details).
So the author's meta review has a black box model which provides effect sizes for each study (in an attempt to even out studies which measure different aspects of mental health), and refuses to detail how it works. That alone makes the whole study suspect, and the above link details obvious calculation errors, too.
~ https://www.afterbabel.com/p/fundamental-flaws-part-3
So the author's meta review has a black box model which provides effect sizes for each study (in an attempt to even out studies which measure different aspects of mental health), and refuses to detail how it works. That alone makes the whole study suspect, and the above link details obvious calculation errors, too.