Included studies | SELECTION | COMPARABILITY | EXPOSURE | NOS Score | |||||
---|---|---|---|---|---|---|---|---|---|
Is the case definition adequate? | Representativeness of the cases | Selection of controls | Definition of controls | Ascertainment of exposure | Same method of ascertainment for cases and controls | Non-response rate | |||
Hofstra JM 2012 [13] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
Ruggenenti P 2015 [6] | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 7 |
Qin W 2011 [1] | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 7 |
Beck LH Jr. 2011 [9] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
Kim YG 2015 [14] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 7 |
Pourcine,F,2017 [7] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
Oh YJ 2013 [15] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
Timmermans SA 2015 [16] | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 7 |
Bech AP2014 [10] | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 7 |
Wei SY2016 [8] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
Song EJ,2018 [17] | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 7 |