Health Sciences Librarian/Associate Professor, Department of Library Public Services, Libraries, Western Kentucky University, Bowling Green, KY,
Associate Professor and Allied Health Department Head, Western Kentucky University, Bowling Green, KY,
J Med Libr Assoc. 2019 Jul;107(3):374-383. doi: 10.5195/jmla.2019.562. Epub 2019 Jul 1.
This study updates Haaland's 1999 dental hygiene mapping study. By identifying core journals and estimating database coverage, it characterizes changes in dental hygiene research and aids librarians in collection development and user education.
Cited references from a three-year (2015-2017) sample of core dental hygiene journals were collected, categorized into five formats, and analyzed by format and publication year according to Bradford's Law of Scattering. CINAHL Complete, MEDLINE, and EMBASE were surveyed to determine the indexing coverage of cited journals.
The number of cited journal titles increased from 389 in 1999 to 1,675 in 2018. Core Zone 1 titles increased from 5 to 11. Journal article citations increased from 69.5% of all citations in 1999 to 78.4% in the present study, whereas book citations decreased from 18.1% to 5.1%. A newly added category, "Internet sources," accounted for 8.4% of citations. Overall, 68.6% of citations were 10 years or younger versus 71.4% in 1999. Most Zone 1 and Zone 2 journals were specific to dentistry or dental hygiene.
Notable changes since 1999 were an increased volume of literature and a shift from print to online sources, reflecting improved accessibility of the literature and greater Internet use. From 1999 to 2018, citations to journal articles increased, books decreased, websites appeared, and government publications increased slightly. These findings indicate that dental hygiene research is growing and that indexing coverage for this field has improved dramatically in the past two decades.
本研究更新了哈兰 1999 年的口腔卫生映射研究。通过确定核心期刊并估计数据库覆盖范围，本研究描述了口腔卫生研究的变化，并为图书馆员的馆藏发展和用户教育提供帮助。
收集了三年（2015-2017 年）核心口腔卫生期刊的参考文献，将其分为五种格式，并根据布拉德福的分散定律，按格式和出版年份进行分析。调查 CINAHL Complete、MEDLINE 和 EMBASE，以确定被引期刊的索引覆盖范围。
被引期刊标题数量从 1999 年的 389 个增加到 2018 年的 1675 个。核心区 1 标题从 5 个增加到 11 个。期刊文章引用从 1999 年所有引用的 69.5%增加到本研究的 78.4%，而书籍引用从 18.1%下降到 5.1%。新增加的类别“互联网资源”占引用的 8.4%。总体而言，68.6%的引用文献在 10 年或更短的时间内发表，而 1999 年的这一比例为 71.4%。大多数区 1 和区 2 期刊都特定于牙科或口腔卫生。
自 1999 年以来，发生了显著变化，文献数量增加，从印刷版转向网络资源，反映了文献的可访问性提高和互联网使用的增加。从 1999 年到 2018 年，期刊文章的引用增加，书籍减少，网站出现，政府出版物略有增加。这些发现表明，口腔卫生研究正在发展，该领域的索引覆盖范围在过去二十年中得到了显著改善。
