TABLE 1.

Results of the Kruskal–Wallis test

Variables	PPPD (n = 61) Mean ± SD	UVH (n = 10) Mean ± SD	PD (n = 11) Mean ± SD	p
UP-SVV, degree	1.72 ± 1.44	2.48 ± 1.33	1.55 ± 0.84	0.141
Mean HTPG	1.203 ± 0.226	1.056 ± 0.126	1.030 ± 0.097	0.001∗∗
HTPG laterality, %	4.81 ± 4.44	4.62 ± 3.54	4.28 ± 3.47	0.947
CP, %	22.9 ± 25.1	71.6 ± 33.7	7.91 ± 3.47	0.001∗∗
cVEMP (asymmetry ratio), %	28.9 ± 32.1	33.5 ± 29.5	23.4 ± 28.6	0.493
oVEMP (asymmetry ratio), %	21.5 ± 26.6	42.0 ± 48.2	23.1 ± 23.6	0.820
Foam ratio	2.11 ± 0.65	3.72 ± 2.17	2.03 ± 0.61	0.103
Romberg ratio on foam	1.90 ± 0.53	2.40 ± 0.81	1.91 ± 0.73	0.213

CP, canal paresis; cVEMP and oVEMP, cervical and ocular vestibular-evoked myogenic potentials; HTPG, head-tilt perception gain; PD, psychogenic dizziness; PPPD, persistent postural-perceptual dizziness; SD, standard deviation; UP-SVV, upright subjective visual vertical; UVH, unilateral vestibular hypofunction.

^∗∗Values indicate statistical significance, p < 0.01.