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Table 3 Percentage fulfilled criteria for the assigned reliability and relevance categories using the CRED evaluation method

From: Criteria for Reporting and Evaluating ecotoxicity Data (CRED): comparison and perception of the Klimisch and CRED methods for evaluating reliability and relevance of ecotoxicity studies

  Percentage of fulfilled criteriaa
Mean SD Min Max n
Reliability categories
 Reliable without restrictions 93 12 79 100 3
 Reliable with restrictions 72 12 47 90 24
 Not reliable 60 15 21 90 58
 Not assignable 51 15 21 64 19
Relevance categoriesb
 Relevant without restrictions 84 8 64 100 50
 Relevant with restrictions 73 14 27 91 42
 Not relevant 61 14 46 82 12
  1. Shown are arithmetic mean, standard deviation (SD), minimum and maximum, and the number of evaluations assigned to each reliability and relevance category
  2. aThe ring test was performed with a draft version of the CRED evaluation method including critical and non-critical criteria; this was not differentiated in this table
  3. bThe non-conclusive category “not assignable” (C4) is excluded from this analysis, because it was not part of the ring test