An Application of the Swedish Cancer-Environment Registry. Leukaemia among Telephone Operators at the Telecommunications Administration in Sweden

Abstract
Wiklund K [Cancer-Environment Registry, Statistical Office of the National Board of Health and Welfare, Planning Division 3, S-106 30 Stockholm, Sweden], Einhom J and Eklund G. Leukaemia among telephone operators at the Telecommunications Administration in Sweden. International Journal of Epidemiology 1981, 10: 373–376. The detection of 4 cases of leukaemia among telephone operators at the Telecommunications Administration in Gothenburg within a period of 6 years (1969–74) evoked disquiet among the employees. Following an inquiry to the National Board of Health and Welfare a retrospective study was undertaken with a view to examining whether this incidence was consistent with the risk for the country as a whole. The study was based on the newly established Cancer-Environment Registry for the period 1961–73 covering the entire country. This was the first occasion on which the Registry had been applied in an investigation of cancer risk for a specific occupational group. The analysis disclosed no higher risk of leukaemia among telephone operators in the Telecommunications Administration in Sweden than among the population as a whole.

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