Impact of Indirect Factors on the Growing Prevalence of Workers with Abnormal Findings in Periodic General Health Examinations : A Survey on the Definition and Detection of Such Abnormal Workers by Occupational Health Organizations

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  • HOSHUYAMA Tsutomu
    Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health
  • TAKAHASHI Ken
    Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health
  • FUJISHIRO Kazuya
    Occupational Health Training Center, University of Occupational and Environmental Health
  • UCHIDA Kazuhiko
    Health Service Station, Kyushu Matsushita Electronics, Co. Ltd.
  • OKUBO Toshiteru
    Occupational Health Training Center, University of Occupational and Environmental Health

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Other Title
  • 健診有所見学率上昇に及ぼす間接的要因の影響 : 企業外労働衛生機関における有所見判定方法の実態調査結果より
  • 健診有所見率上昇に及ぼす間接的要因の影響:企業外労働衛生機関における有所見判定方法の実態調査結果より
  • ケンシンユウショケンリツ ジョウショウ ニ オヨボス カンセツテキ ヨウイン ノ エイキョウ キギョウ ガイ ロウドウ エイセイ キカン ニ オケル ユウショケン ハンテイ ホウホウ ノ ジッタイ チョウサ ケッカ ヨリ

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Abstract

The prevalence of workers with abnormal findings in periodic general health examinations (PGHEx) has been growing recently in Japan and reached 41.2% in 1998. To clarify the indirect factors related to such an increase in workers with abnormal findings in the PGHEx, we carried out a questionnaire survey on the content of the statutory notification form of results of the PGHEx among a representative sample of 136 Occupational Health Organizations (OHOs). Questions on how those workers with abnormal findings were defined and detected and when the definition and the reference intervals for total cholesterol became available were included. Of the 107 OHOs which answered the questionnaire, 85 were included in the analyses because they actually calculated the number of workers with abnormal findings in each company and helped the employer fill out the notification form. The results revealed that there was no standardized definition of workers with abnormal findings in the PGHEx. Both reference intervals of items in the PGHEx and algorithm in detecting workers with abnormal findings in the PGHEx varied among the OHOs. When detecting the workers, 13 OHOs (15.3%) selected them taking into consideration medical background factors such as previous results of the PGHEx and current medical treatment. From the late 1980s to the early 1990s, many OHOs modified the definition of workers with abnormal findings, and have tended to reduce the upper limit of the reference interval for serum cholesterol. This is mainly due to amendment of the Industrial Safety and Health Law and a new recommendation for a reference interval / value proposed by the related scientific society. Although the prevalence of workers with abnormal findings in the PGHEx has continuously increased, it is not valid to compare the prevalence over the years because of modification in the definition of such workers. The prevalence of workers with abnormal findings in the PGHEx, which is one of the most important indices of the state of occupational health, should be measured by using an objective definition and be compatible with the future system of health examination for Japanese workers.

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