Table 4.

Factors associated Parkinson’s disease along with OVF in Korean population between 2009 and 2013

Variable	2009		2010		2011		2012		2013
	aOR (95% CI)	p-value	aOR (95% CI)	p-value	aOR (95% CI)	p-value	aOR (95% CI)	p-value	aOR (95% CI)	p-value
Age (years)
≤64	1		1		1		1		1
≥65	1.77 (1.35–2.31)	<0.001	2.24 (1.78–2.83)	<0.001	0.98 (0.83–1.15)	0.806	2.02 (1.64–2.49)	<0.001	4.75 (3.29–6.85)	<0.001
Gender
Male	1		1		1		1		1
Female	0.85 (0.72–1.00)	0.044	1.00 (0.86–1.17)	0.996	0.78 (0.68–0.91)	0.001	1.48 (1.27–1.72)	<0.001	0.75 (0.64–0.87)	<0.001
Type of insurance
Health insurance	1		1		1		1		1
Medical aid	0.73 (0.62v0.86)	<0.001	1.92 (1.7–2.17)	<0.001	1.07 (0.92–1.24)	0.411	0.80 (0.69–0.93)	0.003	1.41 (1.25–1.59)	<0.001
Type of medical center
Tertiary teaching hospital	1		1		1		1		1
General hospital	1.53 (1.35–1.73)	<0.001	2.19 (1.95–2.47)	<0.001	0.78 (0.70–0.87)	<0.001	1.29 (1.16–1.43)	<0.001	2.00 (1.79–2.23)	<0.001
Hospital	1.49 (1.18–1.89)	0.001	0.87 (0.71–1.08)	0.213	2.30 (1.96–2.69)	<0.001	0.79 (0.66–0.95)	0.011	1.35 (1.10–1.66)	0.004
Clinic	0.00 (0–0)	0.991	0.30 (0.17–0.50)	<0.001	0.13 (0.07–0.27)	<0.001	0.15 (0.07–0.32)	<0.001	0.00 (0–0)	0.994
Region
Metropolitan	1		1		1		1		1
Non-metropolitan	0.71 (0.62–0.81)	<0.001	1.39 (1.24–1.55)	<0.001	0.89 (0.79–1.00)	0.047	0.96 (0.87–1.05)	0.366	0.47 (0.42–0.53)	<0.001
Charlson comorbidity index
0	1		1		1		1
1–2	0.92 (0.78–1.09)	0.353	0.81 (0.71–0.93)	0.003	0.85 (0.75–0.95)	0.005	1.68 (1.50–1.88)	<0.001	1.45 (1.28–1.64)	<0.001
≥3	0.88 (0.74–1.05)	0.165	0.86 (0.74–1.00)	0.054	0.91 (0.78–1.06)	0.232	1.16 (1.00–1.34)	0.055	1.57 (1.35–1.83)	<0.001

Values are presented as number (%). aOR : adjusted odds ratio, CI : confidence interval