Table 3.
Quality of studies using the quality assessment of the NIH for cohort and cross-sectional studies
| Author/Year/ Ref | Q1 | Q2 | Q3 | Q4 | Q5 | Q6 | Q7 | Q8 | Q9 | Q10 | Q11 | Q12 | Q13 | Q14 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hashemi et al., 2010 [28] | ✓ | ✓ | NA | NA | ✓ | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Banejad et al., 2010 [29] | ✓ | ✓ | NA | NA | ✓ | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Derayat et al., 2011 [30] | ✓ | ✓ | NA | NA | ✓ | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Baghapour et al., 2013 [31] | ✓ | ✓ | NA | NA | × | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Safari et al., 2013 [32] | ✓ | ✓ | NA | NA | × | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Navidjouy et al., 2014 [33] | ✓ | ✓ | NA | NA | × | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Karimi et al., 2014 [34] | ✓ | ✓ | NA | NA | × | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Aslani et al., 2014 [35] | ✓ | ✓ | NA | NA | × | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Jamshidi et al., 2014 [36] | ✓ | ✓ | NA | NA | × | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Nahavandi et al., 2015 [37] | ✓ | ✓ | NA | NA | × | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Ghoreishi et al., 2016 [38] | ✓ | ✓ | NA | NA | × | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Mollaie Tavani et al., 2017 [39] | ✓ | ✓ | NA | NA | × | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Sasani et al., 2017 [40] | ✓ | ✓ | NA | NA | NA | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
| Choopan et al., 2018 [41] | ✓ | ✓ | NA | NA | ✓ | ✓ | ✓ | ✓ | ✓ | NA | ✓ | NA | ✓ | ✓ |
*Cases that were followed in the articles were marked✓ and those that were not followed were marked×. Items that were not executable were also identified by the word “NA” not applicable