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Accident data in the new Swedish information system on occupational injuries.

To improve work environment there is a need for knowledge about risks. One must identify the risks, evaluate them and find their antecedents. As an aid in this work the Information System on Occupational Accidents and Diseases (ISA) has been built up at the National Board of Occupational Safety and Health. ISA is based on claims for work injury insurance. Every accident is classified according to the injured person's occupation, branch and activity. The accident is described as a sequence of events. The agencies involved, i.e. machines, tools, materials that influenced each stage of the antecedent, are also described. For statistical purposes one main event and one main agency per accident are selected by computer programs. Each variable is accessible through the computer register. Thus it is possible, apart from official statistics, to produce individual extracts based on very specific needs. For falling, tripping and slipping accidents the following information is obtainable: distribution by branch or o...