The Trend of Article Contents in the Japanese Journal of Nutrition and Dietetics: An Analysis Based on Keywords

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  • Bokui Chika
    Graduate School of Human Science and Environment, University of Hyogo
  • Hashimoto Mariyo
    Graduate School of Human Science and Environment, University of Hyogo
  • Date Chigusa
    Department of Food Science and Nutrition, School of Human Science and Environment, University of Hyogo

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Other Title
  • 栄養学雑誌掲載論文の内容の変遷
  • 栄養学雑誌掲載論文の内容の変遷 : 論文キーワードによる解析
  • エイヨウガク ザッシ ケイサイ ロンブン ノ ナイヨウ ノ ヘンセン : ロンブン キーワード ニ ヨル カイセキ
  • ─論文キーワードによる解析─

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Objective: Obtaining information for future resources by reviewing article contents in the Japanese Journal of Nutrition and Dietetics (JJND), by focusing on keywords.<br>Methods: We broke down JJND (volumes 1 to 70) into five periods (I to V), according to its publication period, and grouped keywords by the period. We made a table of major and minor categories, according to which we classified the keywords. We calculated what proportion each major category occupied within the total number of the keywords in each period, and chose the top 10 categories. With respect to each period, we compared the top 10 and their socio-economic backgrounds.<br>Results: The proportion of the category “food” decreased from Periods I to V, whereas the proportion of “nutrients” increased from I to II, and later decreased. Instead of “food” and “nutrients,” we saw “nutritional assessment method,” “life stage,” and “diseases” ranking high in V. After III, “diet,” “epidemiology (nutritional epidemiology),” and “taste or liking” appeared, ranking in the top 10 increasing till V. “Rats, feed, and animal experiment,” seen in II and III, decreased after IV. Also, “nutritional education” appeared in IV, as did “dietitian education system” in V. From I to V, keywords shifted from non-human categories (such as “food,” “nutrients,” and “animal-related”) to human-related ones.<br>Conclusion: There were changes in keywords from volumes 1 to 70, owing to the socio-economic backgrounds of the publication periods and to the changes of the authors’ affiliations resulting from change of the publishing organizations.

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