Table 3 QAREL Checklist
From: The reliability of the ankle brachial index: a systematic review
Item | Aboyans et al. (2008) [13] | Alvaro-Afonso et al. (2018) [51] | Chesbro et al. (2011) [46] | Chesbro et al. (2013) [56] | de Graaff et al. 2001) [57] | Demir et al. (2016) [52] | Faccenda et al. (1988) [53] | Georgakarakos et al. (2013) [47] | Holland-Letz et al. (2007) [16] | Jaffer et al. (2008) [50] | Langen et al (2009) [48] | Matzke et al. (2003) [12] | Millen et al. (2018) [54] | Rosenbaum et al. (2012) [55] | Span et al. (2016) [49] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 1. Was the test evaluated in a sample of subjects who were representative of those to whom the authors intended the results to be applied? | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y | Y |
 2. Was the test performed by raters who were representative of those to whom the authors intended the results to be applied? | Y | U | Y | Y | Y | Y | U | Y | Y | Y | Y | Y | Y | Y | Y |
 3. Were raters blinded to the findings of other raters during the study? | Y | U | Y | Y | Y | NA | NA | Y | U | U | Y | Y | Y | NA | Y |
 4. Were raters blinded to their own prior findings of the test under evaluation? | Y | NA | U | U | U | U | Y | NA | Y | NA | NA | NA | NA | U | Y |
 5. Were raters blinded to the results of the reference standard for the target disorder (or variable) being evaluated? | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
 6. Were raters blinded to clinical information that was not intended to be provided as part of the testing procedure or study design? | U | U | U | U | U | U | U | U | U | U | U | Y | N | U | U |
 7. Were raters blinded to additional cues that were not part of the test? | U | U | U | U | U | U | U | U | U | U | U | U | N | U | U |
 8. Was the order of examination varied? | U | U | Y | Y | U | N | U | U | U | U | N | U | Y | U | U |
 9. Was the time interval between repeated measurements compatible with the stability (or theoretical stability) of the variable being measured? | U | Y | Y | Y | Y | Y | Y | Y | Y | U | Y | U | Y | U | U |
 10. Was the test applied correctly and interpreted appropriately? | N | Y | Y | Y | Y | Y | N | Y | N | U | Y | Y | Y | N | Y |
 11. Were appropriate statistical measures of agreement used? | Y | Y | Y | Y | Y | Y | P | Y | Y | Y | U | N | Y | Y | Y |