Table 3. Standardised incidence ratios (SIRs) for cancer at sites other than the breast in unaffected relatives of patients with ataxia teleangectasia (AT), both sexes combined and each sex separately.

	Both sexes				Men			Women
Site of cancer	Obs	Exp	SIR	95% CI	Obs	SIR	95% CI	Obs	SIR	95% CI
All sites except breast	191	155.76	1.2	1.1–1.4	106	1.2	1.0–1.4	85	1.3	1.1–1.6
Stomach	17	12.07	1.4	0.8–2.3	11	1.5	0.7–2.6	6	1.3	0.5–2.9
Colon and rectum	25	21.31	1.2	0.8–1.7	14	1.3	0.7–2.1	11	1.1	0.5–1.9
Liver and biliary passages	8	2.97	2.7	1.2–5.3	2	1.4	0.2–5.1	6	3.9	1.4–8.4
Respiratory tract	24	19.38	1.2	0.8–1.8	20	1.3	0.8–2.1	4	0.9	0.2–2.3
Cervix uteri	6	4.51	1.3	0.5–2.9	—	—	—	6	1.3	0.5–2.9
Corpus uteri	5	4.25	1.2	0.4–2.8	—	—	—	5	1.2	0.4–2.8
Ovary	8	4.60	1.7	0.8–3.4	—	—	—	8	1.7	0.8–3.4
Prostate	17	16.06	1.1	0.6–1.7	17	1.1	0.6–1.7	—	—	—
Urinary tract	8	12.68	0.6	0.3–1.2	8	0.9	0.4–1.8	0	0.0	0.0–1.0
Melanoma of skin	10	4.81	2.1	1.0–3.8	6	2.7	1.0–5.8	4	1.6	0.4–4.0
Other skin	13	10.96	1.2	0.6–2.0	4	0.7	0.2–1.7	9	1.8	0.8–3.5
Lymphatic and haematopoietic tissues	13	12.33	1.1	0.6–1.8	7	1.0	0.4–2.1	6	1.1	0.4–2.5
Other and unspecified	37	29.83	1.2	0.9–1.7	17	1.0	0.6–1.7	20	1.3	0.8–2.1

Obs=observed cancers; Exp=expected cancers; CI=confidence interval.