[Health protection at work. Considerations based on statistics of accident insurance with special reference to occupational diseases].
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Data of the social security institutions, although gathered for administrative purposes, provide important information on work-related morbidity. The validity of the data can be improved by linking several data sources and data from questionnaires or medical examinations. Hence, within the framework of the "Cooperative Programme Occupation and Health" (KOPAG) a specific procedure for data linkage was developed. Data linkage was effected via an anonymous social security number on the one hand, and on the other hand a constructed short number using informations on birthday, sex, and the first letter of the surname of the employees. By means of this short number an average 62% of the questionnaires could be linked to the health insurance sickness leave data. Data linkage was particularly successful (85%) under specific advantageous conditions. Data linkage failed in 25% of all cases because the information necessary to construct the short number was obviously wrong. In general, this procedure to link survey data to routine data of the social security proves suitable for use in routine health reporting.
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Blindness of one eye, caused by accident, has to be judged as a degree of invalidity between 30 and 70 per cent if the other eye had partial or complete loss of function before the accident. Some statements leading to that sentence of the federal german supreme court are shown. (See also Klin. Mbl. Augenheilk. 169 [1976] 647, 774; 170 [1977] 131).
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Overall quality control in medicine takes place on various levels: Physician--Hospital--Insurer--Authorities, each having different requirements. Comparative standards are rather seldom. A model for a comparative standard for insurer purposes, the medical statistics package SUMEST' is presented. This model is diagnoses oriented and includes parameters for the severity of the accident, cost of treatment and treatment outcome, all based on 5-year data pool results.
OBJECTIVES: The objective is to study how the staff who purchase health care services for a large national government accident-compensation system seek information on treatment effectiveness, how they assess the quality of that information, whether they question the information sources they choose, and how familiar they are with the key concepts of evidence-based health care (EBHC). METHOD: Staff (22 out of 34) of the health purchasing division of the New Zealand Accident Compensation Corporation (NZ ACC) were interviewed using eight preformatted questions to which they could provide open and multiple answers. Responses were subsequently codified into typologies for quantitative analysis. RESULTS: Most respondents report that they assess the effectiveness of a treatment by accessing published information (nonhuman sources), by consulting others (human sources), or by both means. They assess the quality of information mostly by consulting others, and the second-highest proportion of responses state that they do not know how to evaluate the quality of information. No clear preference emerges with respect to the types of information needed to determine the effectiveness of treatments. The majority of the staff believes they can access information needed to determine treatment effectiveness through the Internet or information databases such as MEDLINE. Although most said they understand the key concepts of EBHC, only five out of twenty-two were able to accurately describe them. CONCLUSIONS: The findings suggest that there is a low level of awareness among the staff of the NZ ACC regarding the use of evidence and understanding of the key concepts of EBHC. Many surveyed staff members lack the skills or training to directly question information about effectiveness of a treatment. They have little idea of the information required to determine the effectiveness of a treatment, and the majority appears to lack the skills to evaluate the health care literature.
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An evaluation of cases in which an expert opinion was obtained during the last 2 years shows that only one-third of patients with traumatic aphakia and a 20/30 loss of vision are adequately assessed. If there are further consequences of the accident (complicated aphakia) they should also be taken into account when assessing loss of vision. A simple method of doing this is described on the basis of three examples.
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