Table 1.

Evaluation of systematic reviews and meta-analyses using AMSTAR

ASTIN ET AL,12 2011FORD ET AL,15 2008JELLEMA ET AL,19 2010JOHN ET AL,20 2011OLDE BEKKINK ET AL,23 2010SHAPLEY ET AL,25 2010
No. of studies included23154785825
No. of patients included8146419443NRNR2323NR
AMSTAR items
  • Was an a priori design provided?YesYesYesYesYesYes
  • Were there duplicate study selection and data extraction?YesYesYesYesYesYes
  • Was a comprehensive literature search performed?YesYesYesYesYesYes
  • Was the status of publication (eg, gray literature) used as an inclusion criterion?YesYesYesYesYesYes
  • Was a list of studies (included and excluded) provided?NoYesYesYesYesNo
  • Were the characteristics of the included studies provided?YesYesYesNoYesYes
  • Was the scientific quality of the included studies assessed and documented?YesYesYesNoYesYes
  • Was the scientific quality of the included studies used appropriately in formulating conclusions?YesYesYesNoYesYes
  • Were the methods used to combine the findings of the studies appropriate?YesYesYesNAYesYes
  • Was the likelihood of publication bias assessed?NoNoYesNoNoNo
  • Was the conflict of interest stated?NoNoNoNoNoNo
Total AMSTAR points*8910588
  • AMSTAR—Assessment of Multiple Systematic Reviews, NA—not applicable, NR—not reported.

  • * Out of a possible total of 11.