TABLE 2.

Comparisons between the persistent postural-perceptual dizziness (PPPD) with unilateral vestibular hypofunction (PPPD-UVH) subgroup and the UVH group

Variables	PPPD-UVH (n = 21) Mean ± SD	UVH (n = 10) Mean ± SD	p	r
UP-SVV, degree	2.05 ± 1.47	2.48 ± 1.33	0.287	0.19
Affected-HTPG	1.280 ± 0.314	1.030 ± 0.117	0.003∗∗	0.52b
Healthy-HTPG	1.225 ± 0.323	1.082 ± 0.155	0.217	0.23
HTPG laterality, %	6.51 ± 5.44	4.62 ± 3.54	0.519	0.12
CP, %	46.6 ± 26.1	71.6 ± 33.7	0.077	0.33a
cVEMP (asymmetry ratio), %	34.9 ± 34.4	33.5 ± 29.5	0.790	0.05
oVEMP (asymmetry ratio), %	20.3 ± 23.5	42.0 ± 48.2	0.834	0.04
Foam ratio	2.23 ± 0.63	3.72 ± 2.17	0.075	0.34a
Romberg ratio on foam	2.02 ± 0.67	2.40 ± 0.81	0.257	0.22

CP, canal paresis; cVEMP and oVEMP, cervical and ocular vestibular-evoked myogenic potentials; HTPG, head-tilt perception gain; SD, standard deviation; UP-SVV, upright subjective visual vertical.

^a Values indicate the magnitude of the effect size, medium.

^b Values indicate the magnitude of the effect size, large.

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