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

Environmental Sciences Europe

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

	Percentage of fulfilled criteria^a
	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 categories^b
Relevant without restrictions	84	8	64	100	50
Relevant with restrictions	73	14	27	91	42
Not relevant	61	14	46	82	12

Shown are arithmetic mean, standard deviation (SD), minimum and maximum, and the number of evaluations assigned to each reliability and relevance category
^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
^bThe non-conclusive category “not assignable” (C4) is excluded from this analysis, because it was not part of the ring test