Table 1.
Assessment of selection-, performance- and detection bias risk.
| First author | Journal | Year | Vol. | First page | SB | PB | DB |
|---|---|---|---|---|---|---|---|
| Sachdeo [31] | EurJProsthodontRestDent | 2004 | 12 | 15 | 0 | 0 | 0 |
| Soncini [30] | JADA | 2007 | 138 | 763 | C | 0 | C |
| Bernado [2] | JADA | 2007 | 138 | 775 | 0 | 0 | 0 |
| Li [27] | PractClinMed | 2005 | 6 | 105 | 0 | 0 | 0 |
| Frencken [28] | JDR | 2006 | 85 | 622 | 0 | 0 | C |
| Estupiñán-Day [29] | PAHO-report/Ecuador | 2006 | C | 0 | 0 |
SB = Selection bias; PB = Performance bias; DB = Detection bias; Vol. = Journal volume; EurJProsthodontRestDent = European Journal of Prosthodontic Dentistry; JADA = Journal of the American Dental Association; PractClinMed = Practice Clinical Medicine; JDR = Journal of Dental Research; PAHO = Pan-American Health Organisation.