Studies | Q1 | Q2 | Q3 | Q4 | Q5 | Q6 | Q7 | Q8 | Q9 | Q10 | Total Score |
---|---|---|---|---|---|---|---|---|---|---|---|
Gunji et al. (2008) [54] | Y | Y | N | N | Y | Y | Y | N | Y | Y | 7 |
So et al. (2009) [55] | Y | Y | Y | Y | Y | Y | Y | N | Y | Y | 9 |
Naja et al. (2012) [56] | N | Y | N | Y | Y | Y | Y | Y | Y | Y | 8 |
Bajaj et al. (2014) [57] | Y | Y | Y | Y | Y | Y | N | N | Y | Y | 8 |
Malamug et al. (2014) [58] | Y | Y | Y | N | Y | Y | Y | Y | Y | Y | 9 |
Vafaeimanesh et al. (2014) [59] | N | Y | N | Y | Y | Y | Y | Y | Y | Y | 8 |
Chen et al. (2015) [60] | N | Y | Y | Y | Y | Y | Y | N | Y | Y | 8 |
Chen et al. (2015) [61] | N | Y | Y | N | Y | Y | Y | Y | Y | Y | 8 |
Kayar et al. (2015) [42] | Y | Y | N | Y | Y | N | N | Y | Y | Y | 7 |
Chen et al. (2016) [62] | N | Y | Y | Y | Y | Y | Y | N | Y | Y | 8 |
Takeoka et al. (2016) [63] | Y | Y | N | Y | Y | Y | Y | Y | Y | Y | 9 |
Alzahrani et al. (2017) [64] | Y | Y | N | Y | Y | Y | Y | Y | Y | Y | 9 |
Allam et al. (2018) [65] | N | Y | Y | Y | Y | Y | Y | Y | Y | Y | 9 |
Alshareef et al. (2018) [66] | Y | Y | N | Y | Y | Y | Y | N | Y | Y | 8 |
Refaeli et al. (2018) [67] | N | Y | N | N | Y | Y | Y | Y | Y | Y | 7 |
Chen et al. (2019) [68] | N | Y | N | N | Y | Y | Y | N | Y | Y | 6 |
Lim et al. (2019) [69] | N | Y | N | Y | Y | Y | Y | N | Y | Y | 7 |
Yu et al. (2019) [70] | N | Y | N | N | Y | Y | Y | Y | Y | Y | 7 |
Q1: Were the groups comparable other than the presence of disease in cases or the absence of the disease in controls? | |||||||||||
Q2: Were cases and controls matched appropriately? | |||||||||||
Q3: Were the same criteria used for identification of cases and controls? | |||||||||||
Q4: Was exposure measured in a standard, valid and reliable way? | |||||||||||
Q5: Was exposure measured in the same way for cases and controls? | |||||||||||
Q6: We’re confounding factors identified? | |||||||||||
Q7: Were strategies to deal with confounding factors stated? | |||||||||||
Q8: Were outcomes assessed in a standard, valid and reliable way for cases and controls? | |||||||||||
Q9: Was the exposure period of interest long enough to be meaningful? | |||||||||||
Q10: Was appropriate statistical analysis used? |