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Document ID (ISN)75107
CIS number 00-1019
ISSN - Serial title 1351-0711 - Occupational and Environmental Medicine
Year 1999
Convention or series no.
Author(s) Hobbesland Å., Kjuus H., Thelle D.S.
Title Study of cancer incidence among 6363 male workers in four Norwegian ferromanganese and silicomanganese producing plants
Bibliographic information Sep. 1999, Vol.56, No.9, p.618-624. 35 ref.
Abstract The objective of this study was to examine the associations between duration of specific work and cancer incidence among employees in four Norwegian ferromanganese and silicomanganese producing plants. A total of 607 cases of cancer was observed against 596 cases expected (standardized incidence ratio (SIR) = 1.02). Internal comparisons of rates showed a positive trend between the rate of all cancers and duration of furnace work. A slightly weaker trend was also found for duration of blue collar non-furnace work when lags of 25 or 30 years were applied in the analyses. However, several results indicated that the incidence of all cancers among thenon-furnace workers decreased during the period of active employment. Furnace and non-furnace workers may have exposures that increase the incidence of several cancers. The low incidence of cancer among non-furnace workers during the period of ongoing exposure cannot be explained. As this study cannot identify any causal factors, the role of exposure to manganese remains unclear.
Descriptors (primary) ferromanganese; cancer; ferroalloys; manganese and compounds
Descriptors (secondary) Norway; manganese; frequency rates; length of exposure; job-exposure relation; cohort study
Document type D - Periodical articles
Country / State or ProvinceNorway
Subject(s) Occupational pathology
Broad subject area(s) Industries and occupations
Browse category(ies) Inorganic substances