Table 2 Discriminative validity between patients (n = 35) with vestibular disorders and healthy participants (n = 27) (determined by an unpaired t-test, level of significance at p ≤ 0.05)

Self-selected walking speed

1.2 (0.2)

1.4 (0.2)

<0.001

0.3 (0.2/0.4)

108.0 (10.4)

115.7 (8.0)

0.002

7.8 (3.0/12.6)

64.0 (9.9)

73.6 (9.4)

<0.001

10.0 (4.9/15.0)

Horizontal head turns

1.0 (0.2)

1.3 (0.2)

<0.001

0.3 (0.1/0.4)

98.8 (14.3)

107.2 (9.5)

0.010

8.5 (2.1/14.8)

60.8 (9.1)

71.2 (8.7)

<0.001

10.6 (5.9/15.4)

Vertical head turns

1.0 (0.3)

1.3 (0.2)

<0.001

0.3 (0.2/0.4)

99.5 (15.9)

109.8 (9.9)

0.004

10.3 (3.4/17.3)

60.0 (11.2)

71.6 (8.9)

<0.001

12.2 (6.7/17.6)

Closed eyes

0.8 (0.2)

1.2 (0.3)

<0.001

0.4 (0.2/0.5)

97.9 (15.0)

108.5 (13.6)

0.005

10.6 (3.3/18.0)

48.8 (11.8)

65.0 (10.6)

<0.001

15.0 (8.6/21.4)

Ambulating backwards

0.7 (0.2)

1.0 (0.2)

<0.001

0.3 (0.2/0.4)

95.8 (14.3)

105.1 (12.8)

0.010

9.2 (2.3/16.3)

40.8 (9.3)

54.4 (8.7)

<0.001

12.8 (8.2/17.4)

Dual task^a

0.9 (0.2)

1.2 (0.3)

<0.001

0.3 (0.2/0.4)

88.3 (16.1)

101.8 (17.3)

0.005

11.4 (0.2/0.4)

58.8 (9.1)

68.4 (10.2)

0.001

8.8 (3.7/13.8)