Table 2.

Cox proportional hazards model analysis for risk of death.

	Univariate		Multivariate†
	HR (95% CI)	p value	HR (95% CI)	p value
Group
Non-melanoma	Reference		Reference
Melanoma	1.58 (1.27–1.97)	<0.0001	1.46 (1.17–1.82)	<0.001
Age
≤54	Reference		Reference
55–69	2.67 (1.49–4.77)	0.001	2.21 (1.23–3.96)	0.008
≥70	18.64 (10.96–31.72)	<0.0001	11.76 (6.84–20.24)	<0.0001
Sex
Female	Reference		Reference
Male	1.15 (0.99–1.33)	0.078	1.10 (0.94–1.28)	0.246
Monthly income (NT$)
<20,000	Reference		Reference
20,001–40,000	0.90 (0.77–1.05)	0.186	1.09 (0.86–1.39)	0.473
>40,000	0.58 (0.46–0.74)	<0.0001	1.11 (0.88–1.42)	0.380
Residential region
Northern	Reference		Reference
Central	1.26 (1.04–1.51)	0.016	1.07 (0.88–1.30)	0.503
Southern	1.19 (0.99–1.43)	0.061	1.07 (0.89–1.29)	0.487
Others	0.90 (0.67–1.20)	0.471	0.81 (0.60–1.09)	0.158
Hypertension	2.22 (1.91–2.58)	<0.0001	1.09 (0.93–1.28)	0.304
Hyperlipidemia	0.66 (0.54–0.82)	<0.001	0.43 (0.35–0.54)	<0.0001
Charlson comorbidity index score
0	Reference		Reference
1	2.65 (2.15–3.26)	<0.0001	1.99 (1.61–2.47)	<0.0001
2	4.88 (3.92–6.09)	<0.0001	3.13 (2.49–3.93)	<0.0001
3	5.48 (4.26–7.04)	<0.0001	3.36 (2.59–4.35)	<0.0001
≥4	7.77 (6.19–9.75)	<0.0001	4.77 (3.75–6.06)	<0.0001

^†Adjusted for age, sex, hypertension, hyperlipidemia, monthly income, residential region, and Charlson comorbidity index score.