Relationship between Latitude and Melanoma in Italy

Table 1

Crude and adjusted Incidence Rate Ratio (IRR) and 95% confidence intervals for malignant melanoma for selected variables.

Variable	Crude IRR, 95% CI		Adjusted^⋀ IRR, 95% CI
Sex
Female	1.000
Male	0.956	0.912–1.001
Age (years)
0–44	1.000		1.000
45–59	2.883	2.703–3.076	2.832	2.655–3.021
60–74	3.743	3.515–3.985	3.673	3.449–3.911
75+	4.339	4.041–4.658	4.218	3.929–4.529
Mean provincial Income 2002	1.011	1.010–1.013	1.004	1.003–1.006
Mammography 2000 (%)	1.026	1.023–1.029
Blond hair 1859–63 (%)	1.040	1.036–1.045	1.014	1.007–1.020
Latitude (increasing degrees)	1.170	1.153–1.186	1.082	1.054–1.111

^⋀Multivariate Poisson model including age, mean provincial 2002 income, % blond hair, and latitude. LR chi2(6) = 3074.41. Pseudo 𝑅² = 0.6942.