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Table 2 Quality of all reviews, Cochrane and non-Cochrane systematic reviews according to AMSTAR and R-AMSTAR percentile scores

From: Comparison of methodological quality rating of systematic reviews on neuropathic pain using AMSTAR and R-AMSTAR

  All SRs Cochrane SRs Non-Cochrane SRs
Grade AMSTAR N (%) R-AMSTAR N (%) AMSTAR N (%) R-AMSTAR N (%) AMSTAR N (%) R-AMSTAR N (%)
A 14 (14) 11 (11) 14 (45) 11 (36) 0 (0) 0 (0)
B 9 (9) 9 (9) 6 (19) 6 (19) 3 (5) 3 (5)
C 10 (10) 9 (9) 4 (13) 4 (13) 6 (9) 5 (8)
D 64 (66) 68 (70) 7 (23) 10 (32) 57 (86) 58 (88)
Total 97 (100) 97 (100) 31 (100) 31 (100) 66 (100) 66 (100)
  1. Quality grades assigned according to percentiles (Grade A: ≥90%ile, Grade B: 80–89%ile, Grade C: 70–79%ile, Grade D: ≤ 69%ile)
  2. AMSTAR Assessment of Multiple Systematic Reviews checklist, R-AMSTAR a revised version of AMSTAR checklist, SR systematic review