Table 3: Non-cosmetic Breast Surgery May 2006 Quality Scoring + Levels of Evidence
| Study ID | Allocation Concealment Score | Quality Score | Level of Evidence |
| Abou Zeid 2002 | B | 10100:2 | 1 |
| Adam 1999 | A | 11111:5 | 1 |
| Aida 1999 | A | 11110:4 | 1 |
| Ansanelli 1996 | B | 10000:1 | 1 |
| Atanassoff 1994 | B | 10001:2 | 1 |
| Bosek 1996 | B | 10100:2 | 1 |
| Buggy 2004 | A | 11001:3 | 1 |
| Chan 1996 | B | 10000:1 | 2 |
| Chan 1997 | B | 10000:1 | 1 |
| Chow 2000 | B | 11000:2 | 1 |
| Correll 2001 | A | 11001:3 | 1 |
| Dirks 2002 | B | 11111:5 | 1 |
| Fassoulaki 2000 | B | 10111:4 | 1 |
| Fassoulaki 2001 | A | 10101:3 | 1 |
| Fassoulaki 2002 | A | 10111:4 | 1 |
| Fassoulaki 2005 | A | 11111:5 | 1 |
| Gan 2004 | A | 11001:3 | 1 |
| Hura 2006 | A | 11000:2 | 1 |
| Jain 2004 | A | 11001:3 | 1 |
| Johansson 2000 | B | 11111:5 | 1 |
| Johansson 2003 | B | 10111:4 | 1 |
| Kairalouma 2004 | B | 10101:3 | 1 |
| Kampe 2004 | A | 11111:5 | 1 |
| Legeby 2005 | A | 11111:5 | 1 |
| Naja 2003 | B | 11001:2 | 1 |
| Pakhira 2004 | B | 10110:3 | 1 |
| Pettersson 2001 | B | 11110:4 | 1 |
| Priya 2002 | A | 11110:4 | 1 |
| Purhonen 2006 | A | 11111:5 | 1 |
| Pusch 1999 | B | 10001:2 | 1 |
| Rice 2000 | B | 11111:5 | 1 |
| Segerdahl 1995 | B | 10111:4 | 1 |
| Sundarathiti 2005 | B | 11001:3 | 2 |
| Talbot 2004 | A | 11111:5 | 1 |
| Terheggen 2002 | B | 11000:1 | 1 |
| Thienthong 2004 | B | 10111:4 | 1 |
| Vallejo 2006 | A | 11110:4 | 1 |
| Wong 1999 | B | 10111:4 | 1 |
| Wyman 1993 | B | 11001:3 | 1 |
| Yarussi 1999 | B | 11111:5 | 1 |
| Yeh 1999 | B | 10000:1 | 2 |
| Zavotsky 1998 | B | 10000:1 | 2 |