Table 2. Multivariate Incidence Rate Ratios (IRRs) for Sebaceous Carcinoma Risk Among US Solid Organ Transplant Recipients.

Characteristic	Observed cases	Incidence rate per 100 000 person-years	Multivariate IRR (95% CI)a	P value
Sex
Female	19	2.81	[Reference]	<.001
Male	83	7.90	2.46 (1.48-4.07)
Race/ethnicity
Non-Hispanic				.03
White	80	7.15	[Reference]
Black	4	1.46	0.28 (0.10-0.77)
Hispanic	13	5.35	1.09 (0.60-1.98)
Asian or Pacific Islander	5	5.44	1.01 (0.40-2.51)
Age at transplant, y
0-44	13	1.80	[Reference]	<.001b
45-54	31	6.77	3.59 (1.87-6.90)
55-64	37	9.22	4.73 (2.47-9.05)
≥65	21	14.5	7.85 (3.85-16.0)
Transplanted organ
Kidney	59	5.87	[Reference]	.09
Liver	13	3.43	0.52 (0.28-0.98)
Heart	18	9.58	0.89 (0.51-1.56)
Lung	8	13.3	1.87 (0.87-4.03)
Other or multiple	4	4.21	0.92 (0.33-2.57)
Induction therapy with thymoglobulin
No	73	5.30	[Reference]	.009
Yes	29	8.29	1.82 (1.16-2.86)
Posttransplant diagnosis of cutaneous squamous cell carcinoma
No	83	4.89	[Reference]	<.001
Yes	19	65.6	4.60 (2.67-7.94)
Time since transplant, y
0-1.9	10	1.88	[Reference]	<.001b
2-4.9	30	5.47	2.86 (1.39-5.85)
5-9.9	35	7.62	4.04 (1.98-8.23)
≥10	27	14.4	8.40 (3.94-17.90)

^aMultivariate model adjusted for variables listed in the table.

^bP value for trend.