Table 3.

Number, incidence rates ratios (IRR), and 95% confidence intervals (95% CI) of colorectal, pancreatic, liver, trachea, bronchus and lung cancer, stomach cancer and lymphoma, corpus uteri, breast (women only), ovary, kidney, bladder, and prostate cancer by type of treatment with type 1 and type 2 diabetes (DM1; DM2). Reggio Emilia 2011-16, resident population aged 20–84 years. See Supplementary Material Table S6 for “other sites”.

	Colon-Rectum (C18–C20)								Pancreas (C25)								Liver (C22)
	Patients with DM2 in Diet-Only as Reference				Population without DM as Reference				Patients with DM2 in Diet-Only as Reference				Population without DM as Reference				Patients with DM2 in Diet-Only as Reference				Population without DM as Reference
	N	IRR	95% CI		N	IRR	95% CI		N	IRR	95% CI		N	IRR	95% CI		N	IRR	95% CI		N	IRR	95% CI
Population with no DM (N = 379,103)					1279	1.00	-	-					501	1.00	-	-					309	1.00	-	-
Population with DM (N = 21,948)					197	1.18	1.01	1.38					115	1.74	1.42	2.14					102	2.57	2.04	3.23
1. Type 1 diabetes (N = 758)					1	0.51	0.07	3.61					0	-	-	-					1	2.00	0.28	14.30
2. Type 2 diabetes (N = 21,190)					196	1.19	1.02	1.39					115	1.76	1.44	2.17					101	2.57	2.04	3.24
2.1 Insulin alone or in any combination (N = 2282)	20	1.32	0.64	2.74	20	1.13	0.72	1.76	17	1.72	0.70	4.21	17	2.39	1.47	3.88	21	3.28	1.46	7.37	21	5.06	3.24	7.90
2.2 Insulin alone (N = 1332)	16	1.67	0.76	3.67	16	1.45	0.88	2.38	12	2.32	0.85	6.29	12	2.70	1.52	4.79	16	4.52	1.89	10.82	16	6.18	3.72	10.27
2.3 Untreated (diet only) (N = 4077)	28	1.00	-	-	28	0.86	0.59	1.25	13	1.00	-	-	13	1.00	0.58	1.74	13	1.00	-	-	15	1.90	1.13	3.20