日本健康学会誌
Online ISSN : 2432-6720
Print ISSN : 2432-6712
ISSN-L : 2432-6712
84 巻 , 2 号
選択された号の論文の3件中1~3を表示しています
巻頭言
資料
  • 望月 友美子, 西川 浩昭
    2018 年 84 巻 2 号 p. 39-51
    発行日: 2018/03/31
    公開日: 2018/04/20
    ジャーナル フリー

    Purpose: Occupational health nurses are considered specialists of health management for the workers in their companies, but they are working with many kinds of difficulties.

    Nevertheless there are little studies of influences owing to the numbers of workers in the companies, therefore, we tried to make it clear that there exist the component pattern of the difficulties which effects on occupational health nursing activities and the differences depend on the number of workers, between less than one thousand and more.

    Object: A questionnaire survey was conducted for the occupational health nurses who were on the active services and attended the seminar held by the Occupational Health Promotion Center in the Tokai area. 28 items of experiences felt difficult in the business, were used for exploratory factor analysis, and t-test of the factor scores were conducted between the groups composed the numbers of workers. 4 items of experiences felt difficult in the business, and learning environment such as possibility study of in/out office were compared using Mann-Whitney’s U test

    Result: The response rate was 75.4% and number of valid respondents was 240 (73.8%). According to the exploratory factor analysis of difficulties in business, 4 factors were obtained, and called Factor1 co-operation and using information with related workers, Factor2 Activity and evaluation of the occupational health activities, Factor 3 activity one’s company and Factor 4 treatment of mental health. No differences on the numbers of the companies were seen the means of factor score by using t-test.

    Conclusion: We found it clear that there are four component factors which effect the difficulty business of the occupational health nurses. About the difference of difficulty in the activity to be able to put according to a scale, the significant difference was not recognized.

原著
  • evidence from 47 Japanese prefectures
    Chaochen MA, Yasushi HONDA, Tran Ngoc DANG
    2018 年 84 巻 2 号 p. 52-72
    発行日: 2018/03/31
    公開日: 2018/04/20
    ジャーナル フリー

    目的:我々は47都道府県の1972-2012年のデータを用い,湿球黒球温度(=WBGT)と死亡との関連を解析し,その評価についてWBGTと平均気温の相違を比較した.

    方法:我々は,まず,気温とラグに非線形分布を仮定した回帰モデル(distributed lag non-linear model=DLNM)を用いて都道府県別のWBGTが死亡に与える影響を計算し,同様の計算を日平均気温を用いて行った.次いで,死亡リスクが最低となるWBGT(minimum mortality WBGT= MMW)と死亡リスクが最低となる平均気温(minimum mortality temperature = MMT)をすべての都道府県について比較した.

    結果:WBGTと平均気温の死亡リスクカーブは類似しており,ほとんどの都道府県で逆J字型が認められた.北方の都道県では,暑熱影響は寒冷影響と同様であったが,南方の府県では寒冷影響がより大きかった.基本的に,MMWとMMTは北部から南部にかけて高くなる傾向が認められた.MMTとMMWをパーセンタイル値で評価した場合,ほとんどの都道府県で80から90パーセンタイルに収まっていた.高知県は外れ値となっていた.通常,暑熱影響のラグは短いので,上記DLNM解析において,ラグのみ元々の21日間から7日間と短くして高知県のデータを再計算したところ,外れ値ではなくなった.このことは,高知県が外れ値になったのは,長すぎるラグを用いたためであることを示唆する.

    結論:我々は,死亡の評価を行う際に,WBGTと平均気温は強く相関していることを認めた.よって,暑熱警報のためにWBGTデータが得られない場合には,平均気温がよい代理変数となる.

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