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. 2018 Nov 30;12(6):459–468. doi: 10.4162/nrp.2018.12.6.459

Table 4. Results of the quality assessment of studies used for the 2015 KDRIs.

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1) For intervention studies, Jadad scale [20] was used to assess the quality of studies.

2) For cohort, nested case-control, and case-control studies, Newcastle-Ottawa [21] was used to assess the quality of studies.

3) For cross-sectional studies, STROBE [22] was used to assess the quality of studies.

4) For review articles, AMSTAR [23] was used to assess the quality of studies.

5) Data presents average points and range (minimum to maximum points).

6) Molybdenum study was not included in the assessment due to the lack of study published after 2008.

Source: KNS, 2015 [28].