摘要
目的分析气候变化条件下,干旱对人群健康影响领域研究热点。方法对PubMed数据库中发表的有关干旱与健康的国外文献进行分析,统计各主题词出现的频次,选择累积频次超过25%的主题词作为高频主题词。利用BICOMS统计不同的高频主题词在同一篇文献中出现的频率,利用SPSS统计软件对主题词矩阵做聚类分析,通过分析各类的文献内容,得到该研究领域的研究热点。结果共检索出有关干旱与健康论文1 067篇,得到高频主题词44个,2000年以后该领域的研究论文数量增多明显,澳大利亚开展的干旱与健康研究比较多,通过这些高频主题词聚类得到了三个研究热点。结论目前国外对干旱与健康的研究热点主要集中在对营养方面的影响、对传染病流行方面的影响以及干旱与精神压力相关研究。
Objective To present the hot topic of researches on drought and health by analyzing related literatures published in Pub Med database. Methods Foreign literatures related to drought and health were searched from the PubMed database and analyzed. Keywords( MeSH) appearing over 12 times in a paper were selected as high-frequency keywords. The frequency of high-frequency keywords in the same literature was calculated to form a word co-occurrence matrix. Cluster analysis on the matrix was done by SPSS statistical software. The research focus on a topic in the field was obtained by analyzing various literatures. Results A total of 1 067 papers related to drought and health were retrieved. There were 44 high-frequency keywords. The number of published literatures on drought and health has increased since 2000,and more research works were conducted in Australia. Three research focal points were obtained by clustering the 44 high-frequency keywords. Conclusion Hot topics focusing on drought and health were the effect of drought on nutrition,influence on infectious diseases and the research related to drought and mental stress.
出处
《环境卫生学杂志》
2017年第5期391-397,共7页
JOURNAL OF ENVIRONMENTAL HYGIENE
基金
中国疾病预防控制中心应急项目
关键词
干旱
健康
文献
主题词
聚类分析
drought, health, reference, key words, cluster analysis