Résumé :
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[BDSP. Notice produite par INIST-CNRS ojR0xUIu. Diffusion soumise à autorisation]. Although increased mortality from diseases of the circulatory system has been observed in patients treated with radiotherapy, the effects of chronic low-dose radiation exposure are not clear. Among 90,284 US radiologic technologists who responded to a mailed questionnaire during 1983-1989, the authors evaluated mortality from circulatory system diseases through 1997 in relation to job history and work procedures as surrogates for radiation exposure. They used Poisson regression models stratified for sex, race, age, and calendar year and adjusted for smoking, body mass index, alcohol intake, marital status, parity, menopausal status, and history of myocardial infarction. A total of 1,107,100 person-years accrued, and 1,070 subjects died from circulatory system diseases. Relative risks for first employment during 1950-1959,1940-1949, or before 1940, compared with 1960 and later, were 1.01 (95% confidence interval (Cl) : 0.78,1.30), 1.14 (95% Cl : 0.86,1.50), and 1.42 (95% Cl : 1.04,1.94), respectively (trend p
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