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

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

SD: standard deviation, CI: Confidence interval.

ap < 0.01 by independent samples t-test.

VSS-SF: Vertigo symptom scale – short form,

VSS-V: Vertigo-balance sub-scale,

VSS-A: Autonomic-anxiety sub-scale

Wilhelmsen et al. BMC Ear, Nose and Throat Disorders 2008 8:2   doi:10.1186/1472-6815-8-2