Table 5. Multiple regression analyses of ISI in relation to subscales of DHI, age, sex, and all groups.

Predictive Variables	Regression Coefficient	Standard error	Standardized Regression Coefficient	p-value	VIF
Age	0.030	0.033	0.061	0.363	1.155
Sex	1.093	0.854	0.083	0.202	1.077
DHI-P	–0.005	0.103	–0.004	0.965	2.081
DHI-E	0.195	0.088	0.229	0.029*	2.768
DHI-F	0.064	0.087	0.087	0.463	3.593
BPPV
MD	0.204	1.288	0.011	0.875	1.288
VN	0.561	1.224	0.032	0.647	1.283
VM	1.225	1.128	0.083	0.279	1.487
PD	1.993	1.523	0.089	0.192	1.191
Other	3.237	1.500	0.148	0.032*	1.208

*p < 0.05.

R = 0.347, R² = 0.120, adjusted R² = 0.081.