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Table 3 Symptom scores. The degree of dizziness symptoms registered by the Vertigo symptom scale-short form and reported by dizzy (n = 365) and not dizzy (n = 129) responder in sample I, and the scales' ability to discriminate between dizzy and not dizzy responders

From: Psychometric properties of the Vertigo symptom scale – Short form

 

Groups

Symptom score

Area under the curve

95% CI

Cut-off value

Sensitivity

Specificity

VSS-SF

Dizzy

17.2 (10.1)a

     
 

Not dizzy

5.0 (7.3)

     
   

0.87

(0.83, 0.91)

6.5

0.86

0.73

VSS-V

Dizzy

9.6 (6.5)a

     
 

Not dizzy

1.8 (3.8)

     
   

0.91

(0.87, 0.94)

2.5

0.89

0.77

VSS-A

Dizzy

7.6 (5.2)a

     
 

Not dizzy

3.2 (4.1)

     
   

0.77

(0.72, 0.82)

3.5

0.77

0.65

  1. SD: standard deviation, CI: Confidence interval.
  2. ap < 0.01 by independent samples t-test.
  3. VSS-SF: Vertigo symptom scale – short form,
  4. VSS-V: Vertigo-balance sub-scale,
  5. VSS-A: Autonomic-anxiety sub-scale