Study | Was the study question clearly stated? | Was the study population clearly described? | Were the cases consecutive? | Were the subjects comparable? | Was the intervention clearly described? | Were the outcomes clearly defined, valid, reliable, and applied consistently? | Was the length of the follow-up adequate? | Were the statistical methods well described? | Were the results well described? | Quality of Study |
---|---|---|---|---|---|---|---|---|---|---|
Baleeiro and Mull32 | Yes | No | NR | No | No | No | NR | No | No | Poor |
Cowan et al33 | Yes | Yes | NR | Yes | Yes | Yes | Yes | Yes | Yes | Good |
McCullagh et al34 | Yes | Yes | NR | No | Yes | Yes | Yes | Yes | Yes | Good |