Table 3.
Risk of bias summary table
| EN | Author | Year | Adequate sequence generation? | Allocation concealment? | Blinding? | Incomplete outcome data addressed | Are typical outcomers reported? (Selective outcome reporting) |
|---|---|---|---|---|---|---|---|
| 675 |
Brown |
2007 |
? |
? |
YES |
YES |
YES |
| 818 |
Daly |
1996 |
? |
? |
? |
YES |
YES |
| 951 |
Faber |
2005 |
NO |
NO` |
YES |
NO |
YES |
| 1058 |
Gibson |
2011 |
? |
? |
YES |
NO |
YES |
| 153 |
Gill |
1997 |
? |
YES |
NO |
NO |
YES |
| 1051 |
Lartey |
1999 |
? |
YES |
NO |
YES |
YES |
| 1154 |
Liu |
1993 |
? |
? |
? |
NO |
YES |
| 257 |
Maldonado Lonzano |
2007 |
YES |
YES |
YES |
YES |
NO |
| 282 |
Morley |
1999 |
? |
YES |
YES |
YES |
YES |
| 1149 |
Nesamvuni |
2005 |
NO |
NO |
YES |
YES |
YES |
| 297 |
Oelofse |
2003 |
NO |
NO |
NO |
NO |
YES |
| 333 |
Rivera |
2010 |
? |
? |
YES |
NO |
NO |
| 1 |
Sazawal |
2010 |
YES |
YES |
YES |
NO |
YES |
| 1172.2 |
Schumann |
2005 |
NO |
NO |
YES |
YES |
NO |
| 838 |
Stevens |
1998 |
? |
? |
YES |
NO |
NO |
| 403 |
Villalpando |
2006 |
? |
? |
YES |
YES |
NO |
| 404 |
Virtanen |
2001 |
? |
? |
YES |
NO |
NO |
| 797 | Walter | 1998 | NO | YES | YES | NO | YES |
The table presents each study by assessed methodological criterion in a cross-tabulation a. Studies are sorted for author name.
a Assessment categories: YES: criterion fulfilled; NO: criterion not fulfilled; “?”: unclear, as no information given.