It's more trustworthy than one study because it's a systematic review of many other studies. Reviews of good studies are the best form of evidence[1]. This rev

It's more trustworthy than one study because it's a systematic review of many other studies. Reviews of good studies are the best form of evidence[1]. This review was conducted by Cochrane[2]. Cochrane reviews are widely regarded as the best and most rigorous reviews. [1] http://www.essentialevidenceplus.com/product/ebm_loe.cfm?show=oxford http://www.essentialevidenceplus.com/product/ebm_loe.cfm?sho... [2] https://en.wikipedia.org/wiki/Cochrane_(organisation) https://en.wikipedia.org/wiki/Cochrane_(organisation)