Statistical methods | very good | adequate | doubtful | inadequate | |
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7 | For continuous scores: was the Standard Error of Measurement (SEM), Smallest Detectable Change (SDC), Limits of Agreement (LoA) or Coefficient of Variation (CV) calculated? Relevance: 29/38 (76%)(R2a); wording: 22/32 (69%)(R3b); add CV: 22/30 (73%)(R3) | SEM, SDC, LoA or CV calculated; the model or formula for the SEM/SDC is described; it matches the study designc and the data 32/36 (89%)(R2) | SEM, SDC, LoA or CV calculated, but the model or formula is not described or does not optimally match the study design and evidence provided that no systematic difference has occurred 25/34 (72%)(R2) | SEMconsistency SDCconsistency or LoA or CV calculated, without knowledge about systematic difference or with evidence provided that systematic difference has occurred | SEM calculated based on Cronbach’s alpha 22/31 (71%)(R3) OR using SD from another population 27/34 (79%)(R2) |
8 | For dichotomous/ nominal/ ordinal scores: Was the percentage specific (e.g. positive and negative) agreement calculated? 24/35 (69%)(R2) | % specific agreement calculated | % agreement calculated |