| Title | First author | Sample size | Place of study | Publication year | Percent of patient satisfaction |
| 1 | Salami et al. | 350 | Isfahan | 2012 | 86.6 |
| 2 | Heydari et al. | 360 | QOM | 2008 | 64.4 |
| 3 | Solaymanpour et al. | 303 | Tabriz | 2008 | 62 |
| 4 | Ebrahim iet al. | 696 | Entire country of Iran | 2012 | 98 |
| 5 | Farzianpour et al. | 320 | Tehran | 2010 | 53 |
| 6 | Ebrahimi | 196 | Urmia | 2012 | l34 |
| 7 | Karimi et al. | 120 | Isfahan | 2013 | 78 |
| 8 | Salami et al. | 400 | Isfahan | 2012 | l87 |
| 9 | Sajadian et al. | 100 | Tehran | 2008 | 56.6 |
| 10 | Heydari et al. | 300 | Qom | 2008 | 80.5 |
| 11 | Oyvind et al. | 10,912 | Norway | 2013 | 80 |
| 12 | Oyvind et al. | 10,912 | Norway | 2011 | 87 |
| 13 | Nohi et al. | 302 | Kerman | 2009 | 65 |
| 14 | Soleimanpour et al. | 360 | Tabriz | 2011 | 85 |
| 15 | Skudal et al. | 500 | Nordic | 2012 | 76 |
| 16 | Riiskjær et al. | 244 | Dubai | 2012 | 80 |
| 17 | Lagu et al. | 500 | America | 2009 | 76 |
| 18 | Santuzzi et al. | 360 | England | 2009 | 85 |
| 19 | Peters | 244 | Germany | 2010 | 80 |