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Table 3 External reliability of the instruments

From: Cross-cultural adaptation, reliability, and validity of the Vertigo symptom scale–short form in the central Kurdish dialect

  VSS − SF − CK n = 74 n = 76 n = 35
VSS − V VSS − AA VSS − T VAS − T TR − T
  ICCa n ICCa n ICCa n ICCa n ICCa n
Intra-rater1 0.88 28 0.93 28 0.95 28 0.98 28 0.95 12
Intra-rater2 0.83 28 0.96 28 0.97 28 0.90 29 0.80 13
Inter-rater 0.97 18 0.93 18 0.97 18 0.96 19 0.91 10
Test-retest 0.93 74 0.94 74 0.97 74 0.96 76 0.90 35
  1. Note: aIntraclass correlation coefficient: the model, two-way mixed effects; the type, mean of k raters; and the definition, absolute agreement
  2. Abbreviations: VSS–SF–CK/V/AA/T Vertigo Symptom Scale–Short Form–Central Kurdish/Vestibular/Autonomic-Anxiety/Total, VAS–T Visual Analogue Scale–Total, TR–T Tandem Romberg–Total