Cadmium exposures and deteriorations of cognitive abilities: estimation of a reference dose for mixture risk assessments based on a systematic review and confidence rating

Table 3 Confidence rating of 15 eligible studies of associations of cadmium exposure with declines in cognitive ability in children

First author	Exposure	Outcome	Selection	Confounding	Analysis	Overall
[18]	Good	Good	Deficient	Good	Good	M/H
[16]	Good	Good	Good	Deficient	Good	M/H
[10]	Good	Good	Good	Good	Good	H
[33]	Good	Good	Good	Good	Good	H
[14]	Good	Good	Deficient	Deficient	Good	L
[23]	Adequate	Good	Deficient	Deficient	Good	L
[40]	Good	Good	Deficient	Good	Good	M/H
[17]	Good	Good	Good	Deficient	Good	M/H
[11]	Good	Good	Adequate	Deficient	Good	M
[13]	Good	Good	Good	Good	Good	H
[29]	Good	Good	Good	Deficient	Good	M/H
[25]	Good	Good	Good	Good	Good	H
[41]	Good	Good	Deficient	Good	Good	M/H
[42]	Good	Good	Good	Deficient	Good	M/H
[26]	Adequate	Good	Good	Deficient	Good	M

ISSN: 1476-069X