Table 1

Sensitivity and specificity of the items included in the diagnostic indices.

PPV

BPPV

MD

VM


sens.

spec.

sens.

spec.

sens.

spec.

sens.

spec.


occurrence of vertigo


in attacks

0.32

0.28

0.74

0.47

0.91

0.48

0.79

0.47


as persistent v~

0.38

0.91

0.00

0.76

0.00

0.78

0.00

0.77


kind of vertigo


rotatory vertigo

0.21

0.25

0.79

0.62

0.64

0.57

0.79

0.60


unsteadiness

0.64

0.68

0.16

0.43

0.46

0.51

0.43

0.50


lift feeling

0.15

1.00

0.00

0.89

0.00

0.91

0.00

0.90


lightheadedness

0.40

0.79

0.11

0.64

0.09

0.66

0.43

0.71


perception of environment


like on a roundabout

0.26

0.26

0.79

0.58

0.64

0.51

0.77

0.54


like on a boat

0.64

0.65

0.32

0.46

0.46

0.50

0.31

0.47


very blurred

0.21

0.98

0.00

0.85

0.00

0.87

0.08

0.88


ear noises


never - occasionally

0.70

0.33

0.88

0.35

0.10

0.23

0.86

0.34


frequently - always

0.30

0.68

0.12

0.66

0.90

0.75

0.14

0.62


defective hearing


never - occasionally

0.89

0.30

0.94

0.23

0.10

0.11

0.86

0.21


frequently - always

0.11

0.68

0.06

0.77

0.90

0.89

0.14

0.65


nausea/vomiting/sweating


never - occasionally

0.65

0.59

0.78

0.52

0.20

0.41

0.07

0.38


frequent - always

0.35

0.40

0.22

0.48

0.80

0.58

0.93

0.62


drop seizure


never - occasionally

0.80

0.24

1.00

0.27

0.50

0.23

0.64

0.19


frequently - always

0.20

0.76

0.00

0.73

0.50

0.82

0.36

0.81


Note that the cut-off points for the ordinal variables ear noises, defective hearing, nausea/vomiting/sweating, and drop seizures were chosen arbitrarily and do not necessarily match those of the diagnostic indices.

Bayer et al. BMC Neurology 2010 10:98   doi:10.1186/1471-2377-10-98

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