Table 2.
Jaded scale
| Study | Randomised | Double blind | Withdrawals and drop outs | Randomisationmethod described and appropriate | Blinding method described and appropriate | Total |
|---|---|---|---|---|---|---|
| Afkhami-Ardekani et al., 2008 | 1 | 0 | 1 | 0 | N/A | 2 |
| Age-Related Eye Disease Study Research Group, 2002 | 1 | 1 | 0 | 0 | 0 | 2 |
| Black et al., 1988 | 1 | 1 | 1 | 0 | 0 | 3 |
| Bogden et al., 1988 | 1 | 1 | 0 | 1 | 0 | 3 |
| Boukaïba et al., 1993 | 1 | 1 | 1 | 0 | 0 | 3 |
| Brewer et al., 1991 | 0 | 0 | 0 | 0 | 0 | 0 |
| Chevalier et al., 2002 | 1 | 1 | 1 | 0 | 0 | 3 |
| Crouse et al., 1984 | 1 | 1 | 1 | 0 | 0 | 3 |
| Farvid et al., 2004 | 1 | 1 | 1 | 1 | 0 | 4 |
| Federico at al., 2001 | 1 | 0 | 1 | 0 | N/A | 2 |
| Feillet-Coudray et al., 2006 | 1 | 1 | 1 | 0 | 0 | 3 |
| Foster et al., 2013 | 1 | 1 | 1 | 1 | 1 | 5 |
| Freeland-Graves et al., 1982 | 1 | 1 | 0 | 0 | 0 | 2 |
| Gatto et al., 1995 | 1 | 0 | 1 | 0 | N/A | 2 |
| Gunasekara et al., 2011 | 1 | 0 | 1 | 1 | 0 | 3 |
| Hashemipour et al., 2009 | 1 | 1 | 1 | 1 | 0 | 4 |
| Hercberg et al., 2005 | 1 | 1 | 1 | 1 | 1 | 5 |
| Hininger-Favier et al., 2007 | 1 | 1 | 1 | 1 | 1 | 5 |
| Hooper et al., 1980 | 0 | 0 | 0 | 0 | 0 | 0 |
| Kadhim et al., 2006 | 0 | 1 | 1 | N/A | 0 | 2 |
| Khan et al., 2013 | 1 | 0 | 1 | 0 | N/A | 2 |
| Kim et al., 2012 | 0 | 0 | 1 | 0 | 0 | 1 |
| Li et al., 2010 | 1 | 1 | 1 | 1 | 0 | 4 |
| Partida-Hernández et al., 2006 | 1 | 1 | 1 | 0 | 0 | 3 |
| Payahoo et al., 2013 | 1 | 1 | 1 | 1 | 1 | 5 |
| Rahimi-Ardabili et al., 2012 | 1 | 1 | 0 | 0 | 0 | 2 |
| RangaRao et al., 1990 | 0 | 0 | 1 | 0 | 0 | 1 |
| Roozbeh et al., 2009 | 1 | 1 | 1 | 0 | 1 | 4 |
| Samman et al., 1988 | 1 | 1 | 1 | 0 | 0 | 3 |
| Seet et al., 2011 | 1 | 0 | 1 | 0 | N/A | 2 |
| Shah et al., 1988 | 1 | 0 | 1 | 0 | N/A | 2 |
| Thurnham et al., 1988 | 1 | 1 | 0 | 0 | 0 | 2 |