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Comparison of Five Quality Rating Scales: Mean Ratings of Chan et al. Article on Effects of T'ai Chi on Bone Mineral Density17
| Rating scale | Number of criteria | Mean quality ratinga | Percentage |
|---|---|---|---|
| Jadad et al.10 | 3 | 2 of 5 | 40% |
| Wayne et al.9 | 9 | 7 of 9 | 78% |
| Chan and Bartlett28 | 18 | 42 of 49 | 86% |
| Cho and Bero29 | 24 | 48 of 62 | 77% |
| Downs and Black30 | 27 | 24 of 32 | 75% |
Quality ratings were averaged from 3 independent raters.
