Table 1:
JBI critical appraisal checklist applied for included studies
| Author Name/Year | Q1 | Q2 | Q3 | Q4 | Q5 | Q6 | Q7 | Q8 | Q9 | Quality points | Quality |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mansour-Ghanaei, 2019(15) | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | No | 7/9 | High |
| Motamed, 2018(23) | Yes | Yes | Yes | Yes | Yes | No | Yes | No | No | 6/9 | Medium |
| Akhavan Sepahi, 2017(24) | Yes | Yes | Yes | Yes | Yes | Not clear | No | No | Not clear | 5/9 | Medium |
| Esteghamati, 2017(25) | Yes | Yes | Yes | Yes | Yes | Yes | No | No | Not clear | 4/9 | Medium |
| Moghtaderi, 2013(26) | Yes | Yes | Yes | Yes | Yes | Yes | No | No | No | 5/9 | Medium |
| Safaei, 2013(27) | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | Not clear | 7/9 | Medium |
| Shafi, 2013(28) | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Not clear | 8/9 | High |
| Madani, 2012(29) | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | 9/9 | High |
| Ahmadi, 2012(9) | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | 8/9 | High |
| Barahimi, 2011(14) | Yes | Yes | Yes | Yes | Yes | Not clear | Yes | No | Not clear | 6/9 | Medium |
| Salehi, 2011(30) | Yes | Yes | Yes | Yes | Yes | Not clear | Yes | No | No | 6/9 | Medium |
| Mahdavi-Mazdeh, 2010(31) | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Not clear | 8/9 | High |
| Emamghorashi, 2010(32) | Yes | Yes | Yes | Yes | Yes | No | No | No | Not clear | 5/9 | Medium |
| Akhavan Sepahi, 2010(33) | Yes | Yes | Yes | Not clear | Yes | Not clear | No | No | Not clear | 4/9 | Medium |
| Fallahzadeh, 2010(34) | Yes | Yes | Yes | Yes | Yes | Not clear | Yes | No | No | 6/9 | Medium |
| Shajari, 2009(35) | Yes | Yes | Yes | Yes | Yes | No | No | No | No | 5/9 | Medium |
| Badeli, 2009(36) | Yes | Yes | Yes | Yes | Yes | Yes | No | No | Not clear | 6/9 | Medium |
| Derakhshan, 2008(37) | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | No | 7/9 | High |
| Ahmadzadeh, 2008(38) | Yes | Yes | Yes | Yes | Yes | Yes | No | No | Not clear | 6/9 | Medium |
| Sadeghi, 2008(39) | Yes | Yes | Yes | Yes | No | No | Yes | No | Not clear | 4/9 | Medium |
| Esfahani, 2007(40) | Yes | Yes | Yes | Not clear | No | Yes | No | No | Not clear | 4/9 | Medium |
| Safary, 2005(41) | Yes | Yes | Yes | Yes | Yes | Not clear | No | No | Not clear | 5/9 | Medium |
| Ghasemi, 2004(42) | Yes | Yes | Yes | Yes | No | No | No | No | Not clear | 4/9 | Medium |
| Vazirian, 2004(43) | Yes | Yes | Yes | Yes | No | No | Yes | No | Not clear | 4/9 | Medium |
| Shahidi, 2001(44) | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | No | 7/9 | High |
Q1. Sample was representative?
Q2. Participants appropriately recruited?
Q3. Sample size was adequate?
Q4. Study subjects and the setting described?
Q5. Data analysis conducted?
Q6. Objective, standard criteria, reliably used?
Q7. Appropriate statistical analysis used?
Q8. Confounding factors/subgroups/differences identified and accounted?
Q9. Subpopulations identified using objective criteria?