This study used the Assessment of Multiple Systematic Reviews (AMSTAR) to determine how the quality of methodologies in systematic reviews (SRs) and meta-analyses (MAs) impacts the effectiveness of nonpharmacological cancer pain management. The authors searched 11 electronic databases for published and unpublished studies (in English and Korean) on SRs and MAs relating to “cancer” and “pain management” that were released prior to May 7, 2014. The findings from 17 SRs and MAs were scored for quality using AMSTAR and coded by management type and value of effect size.