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Table 3 Levels of evidence for quality of measurement properties proposed by Cochrane Back Review Group

From: Measurement properties of the upright motor control test for adults with stroke: a systematic review

Level Rating Criterion
Strong +++ or --- Consistent findings in multiple studies of good methodological quality OR in one study of excellent methodological quality
Moderate ++ or -- Consistent findings in multiple studies of fair methodological quality OR in one study of good methodological quality
Limited + or - One study of fair methodological quality
Conflicting +/− Conflicting findings
Unknown ? Only studies of poor methodological quality
  1. + positive rating, ? indeterminate rating, − negative rating
  2. Adapted from van Tulder et al. [41]