Table 3. Risk of bias within studies.
| Trial | Randomisation1 | Concealment2 | Performance3 | Detection4 | Attrition5 | Reporting6 |
|---|---|---|---|---|---|---|
| Aghajafari 2002 | Low | Low | Low | Unclear | Low | Low |
| Crowther 2006 | Low | Low | Low | Low | Low | Low |
| Garite 2009 | Low | Low | Low | Low | Low | Low |
| Guinn 2001 | Low | Low | Low | Low | Low | Low |
| Mazumder 2008 | Low | Low | High | Unclear | Unclear | Unclear |
| McEvoy 2002 | Low | Low | Low | Low | Low | Low |
| McEvoy 2010 | Low | Low | Low | Low | Low | Low |
| Murphy 2008 | Low | Low | Low | Low | Low | Low |
| Peltoniemi 2007 | Low | Low | Low | Low | Unclear | Low |
| TEAMS [31] 1999 | Low | Low | Low | Low | Unclear | Low |
| Wapner 2006 | Low | Low | Low | Low | Unclear | Low |
1Random sequence generation.
2Allocation concealment.
3Blinding of participants and personnel.
4Blinding of outcome assessment.
5Incomplete outcome data.
6Selective reporting.
Abbreviations: TEAMS, Trial of the Effects of Antenatal Multiple courses of Steroids versus a single course.