Table 4.

Risk of dementia among patients with cancer stratified by different kinds of dementia.

Cancer types	Alzheimer's			Vascular dementia			Other dementia
	O	SIR*	95% CI	O	SIR*	95% CI	O	SIR*	95% CI
Oral (upper aerodigestive tract)	78	0.87	0.69–1.08	65	0.70	0.54–0.89	85	0.73	0.58–0.90
Salivary gland	18	1.76	1.04–2.79	5	0.50	0.16–1.18	11	0.85	0.42–1.52
Esophageal	3	0.22	0.04–0.64	4	0.28	0.07–0.71	9	0.49	0.22–0.93
Stomach	31	0.58	0.40–0.93	34	0.59	0.41–0.82	45	0.61	0.44–0.81
Small intestine	11	0.56	0.28–1.01	13	0.69	0.37–1.18	22	0.94	0.59–1.42
Colon	425	0.90	0.81–0.98	348	0.74	0.67–0.83	499	0.80	0.73–0.87
Rectum	185	0.78	0.67–0.90	160	0.65	0.56–0.76	223	0.71	0.62–0.81
Anus	8	0.63	0.27–1.24	7	0.66	0.29–1.37	14	0.98	0.54–1.61
Liver	9	0.33	0.15–0.63	9	0.34	0.15–0.64	16	0.47	0.27–0.77
Pancreas	1	0.05	0.00–0.30	4	0.22	0.06–0.58	13	0.57	0.30–0.98
Nose	5	0.82	0.26–1.92	10	1.70	0.81–3.14	6	0.75	0.27–1.64
Lung	90	0.69	0.56–0.85	65	0.55	0.42–0.70	105	0.68	0.56–0.83
Breast	824	0.91	0.85–0.97	527	0.86	0.79–0.94	773	0.82	0.76–0.88
Cervix	20	0.74	0.46–1.15	13	0.70	0.35–1.15	32	1.05	0.72–1.49
Endometrium	205	0.83	0.72–0.95	144	0.78	0.66–0.92	209	0.78	0.68–0.90
Ovary	54	0.80	0.60–1.04	22	0.46	0.29–0.70	37	0.50	0.35–0.69
Other female genitals	19	0.82	0.49–1.28	14	0.73	0.40–1.22	27	0.87	0.57–1.27
Prostate	1127	0.80	0.75–0.85	1262	0.77	0.73–0.82	1335	0.72	0.68–0.76
Testis	2	0.66	0.06–2.44	4	1.21	0.31–3.13	6	1.71	0.62–3.75
Other male genitals	10	1.03	0.49–1.91	7	0.58	0.23–1.21	9	0.65	0.29–1.24
Kidney	83	0.78	0.62–0.97	82	0.76	0.60–0.94	86	0.69	0.55–0.84
Urinary bladder	282	0.87	0.77–0.98	325	0.89	0.80–1.00	365	0.85	0.76–0.94
Melanoma	175	0.70	0.60–0.81	158	0.72	0.61–0.84	205	0.74	0.64–0.85
Skin	448	0.89	0.81–0.98	448	0.90	0.82–0.98	582	0.84	0.78–0.92
Eye	11	0.80	0.40–1.43	7	0.55	0.22–1.14	12	0.72	0.37–1.27
Nervous system	59	0.73	0.55–0.94	51	0.77	0.57–1.02	118	1.39	1.15–1.66
Thyroid gland	16	0.66	0.38–1.07	16	0.79	0.45–1.29	22	0.82	0.51–1.24
Endocrine glands	102	1.00	0.82–1.22	94	1.03	0.83–1.26	123	1.07	0.89–1.27
Connective tissue	16	0.66	0.38–1.07	22	0.92	0.57–1.39	27	0.85	0.56–1.24
Non-Hodgkin's lymphoma	164	0.73	0.62–0.85	147	0.70	0.59–0.83	227	0.82	0.72–0.93
Hodgkin's disease	5	0.69	0.22–1.63	6	0.88	0.32–1.93	5	0.61	0.19–1.42
Myeloma	37	0.76	0.54–1.05	34	0.71	0.49–0.99	53	0.84	0.63–1.09
Leukemia	52	0.82	0.61–1.08	50	0.87	0.64–1.15	57	0.76	0.58–0.99
Smoking related#	588	0.77	0.71–0.84	592	0.75	0.69–0.81	740	0.76	0.71–0.82
Non-smoking related	3987	0.84	0.81–0.86	3565	0.78	0.76–0.81	4618	0.78	0.76–0.81
All	4575	0.82	0.80–0.85	4157	0.78	0.75–0.80	5358	0.78	0.76–0.80

^*Adjusted for age, sex, education, birth country, period of dementia diagnosis, diabetes, and hypertension.

^#Defined as cancer of the oral, esophageal, stomach, pancreas, lung, cervix, kidney, and urinary bladder.

Bold values indicate SIR less than 1 and 95% CI does include 1.00.