The three non-TMS studies were selected because of (a) their quality, as judged by the Cochrane Collaboration, and (b) the similarity of their pain measurements to those used in the TMS study.
De tre icke-TMS-relaterade studierna valdes ut med hjälp av (a) ett kvalitetsmått, såsom Cochrane collaboration bedömt det, (b) likheten mellan deras smärtmått och de mått använda I TMS-studien.