Table 3.

Incidence of BPPV (Females).

	Age 45–65 yr.		Age >65 yr.
Characteristics	aHR	p-valuea	aHR	p-valuea
Age	1.03	0.14	0.9	0.09
URBAN
Urban	1 (ref)		1 (ref)
Suburban	1.30	0.26	3.10	0.11
Rural	1.54	0.22	4.07	0.06
INSURANCE WAGE
≥NT$40,000	1(ref)		1(ref)
NT$20,000–40,000	0.24*	0.02	1.32	0.99
<NT$20,000	0.49	0.08	10,391	0.96
Fixed	0.58	0.21	15,382	0.96
HEALTH CARE UTILIZATION
Low	1 (ref)		1 (ref)
Mid-Low	2.48	0.24	2,413	0.94
Mid-High	4.48*	0.04	5,540	0.93
High	6.52*	0.01	9,215	0.3
Estrogen prescription (Yes/No)	0.01***	<0.001	0.01***	<0.001

aHR, adjusted hazard ratio;

ref, reference.

^aUsing Cox-proportional regression models.

^*p < 0.05;

^***p < 0.001 indicates statistically significant.