Ambient ultraviolet radiation exposure and hepatocellular carcinoma incidence in the United States

Table 3 Association between ambient UV and HCC incidence stratified by sex, race, and residential mobility

UV exposure (per IQR increase)^a	Cases (n)	Fully adjusted^b IRR (95% CI)	p int.
Sex			0.01
Male	43,357	0.83 (0.76, 0.91)
Female	12,888	0.95 (0.85, 1.07)
Race			0.01
White	38,546	0.88 (0.80, 0.96)
Black	7737	0.85 (0.57, 1.26)
Asian, Pacific Islander, American Indian, Alaskan Native	9962	0.67 (0.48, 0.92)
Residential mobility^c			0.86
Non-movers	31,039	0.78 (0.69, 0.88)
Movers	25,206	0.88 (0.79, 0.99)

CI confidence interval, HCC hepatocellular carcinoma, IQR interquartile range, IRR incidence rate ratio, UV ultraviolet radiation
^aIQR corresponds to 32.4 mW/m²
^bAdjusted for age at diagnosis, sex, race, year of diagnosis, SEER registry, and the following county-level variables: prevalence of heavy alcohol consumption, smoking, obesity, diabetes; median household income; percentage unemployed; urbanicity; PM_2.5
^cNon-movers were defined as those who resided in a county where ≥51.9% (20th percentile) of the population stayed in the same home (no migration). Movers resided in a county where <51.9% of the population stayed in the same home

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