| Study | At baseline | Randomisation | Allocation concealed | Intention‐to‐treat | Assessor blinding | Losses accounted for |
| Bouche 2002 | similar | yes | not reported | yes | not reported | no losses |
| Ebbeling 2003 | similar | yes | not reported | yes, in addition to analysis leaving out dropouts | not reported | yes |
| Ebbeling 2005 | similar | yes | not reported | no, 68% completed study (n=23) | not reported | yes |
| McMillan‐Price 2006 | similar | yes | not reported | yes | not reported | no losses |
| Slabber 1994 | similar | yes | not reported | yes | not reported | no losses |
| Sloth 2004 | similar | yes | not reported | no | not reported | yes |
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