Health Risks from Exposure to Low Levels of Ionizing Radiation: BEIR VII Phase 2

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Health Risks from Exposure to Low Levels of Ionizing Radiation: BEIR VII Phase 2 (2006)
Board on Radiation Effects Research (BRER)

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. "7 Medical Radiation Studies." Health Risks from Exposure to Low Levels of Ionizing Radiation: BEIR VII Phase 2. Washington, DC: The National Academies Press, 2006.

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Health Risks from Exposure to Low Levels of Ionizing Radiation: Beir VII Phase 2

TABLE 7-3 Risk Estimates for Cancer Incidence and Mortality from Studies of Radiation Exposure: Female Breast Cancer

Reference	Study	Radiation Type	Average Dose (Gy)	Dose Range	Cases	Controls/Population	ERR per Gy	LB	UB	EAR/10⁴ PY/Gy	LB	UB	Comments
Incidence
Boice and others (1988)	Cervix	External + ²²⁶Ra	0.3		953	1,806	−0.20	<−0.2,	0.3				Overall
Boice and others (1988)	Cervix	External + ²²⁶Ra			145	284	0.33	<−0.3,	5.8				Women with no ovaries
Hildreth and others (1989)	Thymus		0.69	[0.02–7.5]^a	22	1,201	2.48	1.1	5.2	5.7	2.9,	9.5
Boice and others (1991b)	Fluoroscopy	External	0.79	[0.02–5]^a	147	2,573	0.61	0.3	1.01	10.7	6.0	15.8	Overall
Boice and others (1991b)							1.00						Exposure at age 15
							0.70						Exposure at age 25
							0.10						Exposure at age 35
Mattsson and others (1995)	Benign breast disease	External	5.8	0–50	47		1.63	0.77	2.89
Shore and others (1986)	Postpartum mastitis	External	3.8	[0.6–14]^a	51	601	0.40	0.2	0.7
Lundell and others (1996)	Hemangioma	Mostly ²²⁶Ra	0.39	<0.01–5.8	75	9,675	0.38	0.09	0.85	0.4			Overall 50+ years after exposure
Lundell and others (1996)	Hemangioma	Mostly ²²⁶Ra	0.22		16		2.25	0.59	5.62	22.9			Overall 50+ years after exposure
Lundell and others (1999)	Hemangioma	Mostly ²²⁶Ra	0.29	<0.01–35.8	236	17,202	0.35	0.18	0.59	0.7	0.4	1.1
Travis and others (2002)	HD survivors	External	22	<0.1–61.3	67	122	0.15	0.04	0.73				Women with chest radio-therapy only
Mortality
Weiss and others (1994)	Ankylosing spondylitis	External	0.59	0.07–1.27	42		0.08	−0.3,	0.65	NA	NA		Note—high dose to the ovary
Howe and others (1996)	Fluoroscopy	External	2.13	0–18.4	103		3.56	1.85	6.82	10.3	6.4	16.2	Nova Scotia: for exposures at age 15—EAR 20 years after exposures
			0.79	0–14.4	578		0.40	0.13	0.77	1.2	0.4	2.3	Other provinces: for exposures at age 15—EAR 20 years after exposures
					681		0.90	NA	3.2				Overall: for exposures at age 15—EAR 20 years after exposures
Doody and others (2000)	Scoliosis	External	0.11	0–1.7	70	4,942	2.7	−0.2	9.3				Among women with at least one radiographic examination
NOTE: The number of cases and controls (or population size in cohort studies) as well as the mean dose and range relate only to exposed persons. Empty cells indicate data not available from publication. LB = lower bound; UB = upper bound of CI. ^aFrom Preston and others 2002.