Table 3

 Quality assessment; controlled trials

AuthorSubjectsInterventionOutcomesFollow upAnalysis
Description of subjectsAllocation concealmentMethod of randomisation describedWell defined/objective interventionsCare taker/pt blindingDefinitionBlindingSufficient (⩾90%)I TTAdjustment for confoundersData provided to confirm results
BrazelYesNoNoYesNoYesNoYesNoNoYes
DagliYesNoNoYesNoYesNoYesNoNoYes
NevilleYesUnclearYesYesNoNoNoYesNoNoYes