Table 4.

Standard incidence ratios of cancers in diabetes patients of Shanghai, China.

Sites	Men (N = 24,124)			Women (N = 27,200)
	No. of cases		SIRa (95% CI)	No. of cases		SIRa (95% CI)
	Observed	Expected		Observed	Expected
All cancers	1266	1580	0.80 (0.76, 0.85)	1273	1360	0.93 (0.88, 0.99)
Sub-site cancers
Colon	133	125	1.07 (0.88, 1.25)	142	129	1.10 (0.92, 1.28)
Rectum	74	94	0.79 (0.61, 0.97)	67	76	0.88 (0.67, 1.10)
Lung	232	389	0.60 (0.52, 0.67)	153	200	0.76 (0.64, 0.88)
Stomach	175	215	0.82 (0.69, 0.94)	99	119	0.93 (0.67, 1.00)
Liver	116	127	0.92 (0.75, 1.08)	45	69	0.65 (0.46, 0.84)
Pancreas	61	68	0.90 (0.68, 1.13)	61	63	0.96 (0.72, 1.21)
Thyroid	21	20	1.03 (0.60, 1.47)	105	76	1.37 (1.11, 1.63)
Prostate	120	119	1.01 (0.82, 1.18)
Breast				230	202	1.13 (1.01, 1.28)
Corpus uteri				39	40	0.98 (0.67, 1.20)

Cancer cases diagnosed within one year of diabetes diagnosis excluded from the analysis.

^aSIR, standard incidence ratios.