Table 3.

Subgroup analysis of risk of death between melanoma and non-melanoma group.

	Non-melanoma		Melanoma		HR† (95% CI)	p value
	N	No. of death	N	No. of death
Age
≤54	710	7	71	7	13.08 (4.41–38.77)	<0.0001
55–69	1,430	47	143	14	2.85 (1.55–5.23)	<0.001
≥70	2,620	571	262	72	1.33 (1.04–1.70)	0.024
					p for interaction	<0.0001
Sex
Female	2,060	235	206	39	1.63 (1.16–2.29)	0.005
Male	2,700	390	270	54	1.50 (1.13–2.00)	0.006
					p for interaction =	0.6331
Monthly income (NT$)
<20,000	1,527	231	144	34	1.76 (1.22–2.54)	0.003
20,001–40,000	2,349	320	235	44	1.33 (0.97–1.83)	0.078
>40,000	884	74	97	15	1.93 (1.09–3.42)	0.024
					p for interaction =	0.3457
Residential region
Northern	1,989	236	242	42	1.55 (1.12–2.16)	0.009
Central	1,116	172	87	17	1.29 (0.78–2.13)	0.322
Southern	1,212	171	111	27	1.82 (1.20–2.74)	0.005
Others	443	46	36	7	1.37 (0.61–3.09)	0.447
					p for interaction =	0.775
Charlson comorbidity index score
0	2,663	158	212	25	2.40 (1.56–3.68)	<0.0001
1	1,024	156	126	21	1.22 (0.77–1.93)	0.394
2	478	124	54	15	1.01 (0.58–1.76)	0.977
3	280	75	45	17	1.67 (0.98–2.86)	0.060
≥4	315	112	39	15	1.20 (0.70–2.08)	0.509
					p for interaction =	0.0799
Charlson comorbidity index score
0	2,663	158	212	25	2.40 (1.56–3.68)	<0.0001
1	1,024	156	126	21	1.22 (0.77–1.93)	0.394
≥2	1,073	311	138	47	1.25 (0.92–1.71)	0.152
					p for interaction =	0.029

^†Adjusted for age, sex, monthly income, residential region, hypertension, and hyperlipidemia.