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lüll Incidence of cancer among female flight attendants: a meta-analysis Tokumaru O; Haruki K; Bacal K; Katagiri T; Yamamoto T; Sakurai YJ Travel Med 2006[May]; 13 (3): 127-32BACKGROUND: Airline flight personnel work in a unique environment with exposure to known or suspected carcinogens and mutagens including ionizing cosmic radiation. A meta-analysis was conducted to study whether the occupational exposure of female flight attendants (FA) increased their relative risk of cancer incidence. METHODS: A bibliographical computer search from 1966 to 2005 of cancer incidence cohort studies of female FA was performed. Combined relative risks (RRc) in cancer incidence were calculated by means of meta-analysis. RESULTS: RRc and 95% confidence interval (CI) for malignant melanoma and breast cancer in female FA were 2.13 (95% CI: 1.58-2.88) and 1.41 (1.22-1.62) (p < 0.0001). Excess risk was not significant for all-site cancer with RRc of 1.10 (0.99-1.21). CONCLUSIONS: The meta-analysis confirmed the significantly increased risks for malignant melanoma and breast cancer in female FA. Increased exposure to cosmic radiation during flight has been suggested as a potential occupational risk factor. Ultraviolet radiation exposure on board seems an unlikely occupational risk, but nonoccupational leisure time sun exposure is a possible risk factor. The etiology of the observed increase in incidence of some cancers remains controversial because assessment of possible confounders, especially nonoccupational exposure factors, has thus far been limited.|*Aviation[MESH]|Air Pollutants, Radioactive/analysis[MESH]|Breast Neoplasms/epidemiology[MESH]|Cosmic Radiation[MESH]|Female[MESH]|Humans[MESH]|Incidence[MESH]|Melanoma/epidemiology[MESH]|Middle Aged[MESH]|Neoplasms, Radiation-Induced/*epidemiology[MESH]|Occupational Diseases/*epidemiology[MESH]|Occupational Exposure/*statistics & numerical data[MESH]|Registries[MESH]|Risk Factors[MESH]|Skin Neoplasms/epidemiology[MESH]|Women's Health[MESH]|Women, Working/*statistics & numerical data[MESH]|Workforce[MESH] |