Table 1.
The characteristics of studies included
| First author | Publication year | Province | Age (mean ± SD) | Sample size | Prevalence (%) | Diagnostic test | Quality of studies |
|---|---|---|---|---|---|---|---|
| Rowhani-Rahbar | 2004 | Razavi Khorasan | 32.8 ± 8.9 | 110 | 59.4 | ELISA | High |
| Mohammad Alizadeh | 2005 | Hamedan | NA | 427 | 30 | ELISA | Medium |
| Zakizadeh | 2006 | Mazandaran | NA | 312 | 30.80 | ELISA | High |
| Mohtasham Amiri | 2007 | Guilan | 34.7 ± 8.9 | 460 | 45.40 | ELISA | Medium |
| Pourahmad | 2007 | 3 provinces | NA | 1431 | 34.70 | ELISA | High |
| Azarkar | 2007 | South Khorasan | 34.1 ± 11.7 | 400 | 7.80 | ELISA | High |
| Asgari | 2008 | 10 provinces | NA | 8630 | 37.85 | ELISA | High |
| Zakizad M | 2009 | Mazandaran | NA | 312 | 30.80 | ELISA | Medium |
| Tajbakhsh | 2009 | Chaharmahal and Bakhtiari | 25.8 | 600 | 12.66 | ELISA | Low |
| Davoodian | 2009 | Hormozgan | 35.4 ± 8.4 | 249 | 64.80 | ELISA | High |
| Azarkar | 2010 | South Khorasan | 34.7 ± 12 | 358 | 8.10 | ELISA | High |
| Kassaian | 2012 | Isfahan | 32.6 | 943 | 41.60 | ELISA | Medium |
| Naghili | 2012 | East Azerbaijan | 31.3 ± 10 | 192 | 29 | ELISA | High |
| Nokhodian | 2012 | Isfahan | 34.54 ± 11.2 | 163 | 7.40 | ELISA | High |
| Ziaee | 2014 | South Khorasan | 34.7 ± 11.4 | 881 | 7.70 | ELISA | Medium |
| Alasvand | 2015 | 6 Providences | 37 ± 13 | 2120 | 12.90 | ELISA | Medium |
| Khajedaluee | 2016 | Razavi Khorasan | 53.37 ± 54.9 | 1114 | 24.50 | ELISA | High |