Health information on the Internet -: Accessibility, quality, and readability in English and Spanish
Health information on the Internet -: Accessibility, quality, and readability in English and Spanish
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DOI：
10.1001/jama.285.20.2612
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发表时间：
2001-05-23
影响因子：
120.7
通讯作者：
McGlynn, EA
中科院分区：
文献类型：
--
作者：
Berland, GK;Elliott, MN;McGlynn, EA
背景：尽管互联网上有大量与健康相关的信息，但人们对这些健康信息的可及性、质量和阅读等级知之甚少。目的评估可通过英语和西班牙语搜索引擎和网站获得的有关乳腺癌、抑郁症、肥胖症和儿童哮喘的健康信息。设计和设置三项独特的研究，从2000年7月到2000年12月，使用结构化搜索实验评估14个搜索引擎的可及性。一个搜索引擎提供的25个健康网站和内容的质量由34名医生使用结构化隐含审查(评价者间可靠性和0.90)进行评估。使用Fry Readable Graph方法建立结构化隐含审查文本的阅读等级。可访问性研究的主要结果衡量标准是指向相关内容的链接比例；关键临床要素的质量、覆盖率和准确性；以及等级阅读公式。结果在搜索引擎的第一页链接中，不到四分之一的链接指向相关内容(20%的英语和12%的西班牙语)。平均而言，英语网站上45%的临床要素和西班牙语网站上22%的临床要素完全准确，英语上24%的临床要素完全没有覆盖，西班牙语网站上53%的临床要素根本没有覆盖。所有英文网站和86%的西班牙语网站都需要高中或更高水平的阅读能力。结论使用搜索引擎和简单搜索词获取健康信息效率不高。英文和西班牙文网站对关键信息的覆盖面很差，而且不一致，尽管所提供的信息的准确性总体上是好的。需要高阅读水平才能理解基于Web的健康信息。
Context Despite the substantial amount of health-related information available on the Internet, little is known about the accessibility, quality, and reading grade level of that health information.Objective To evaluate health information on breast cancer, depression, obesity, and childhood asthma available through English- and Spanish-language search engines and Web sites.Design and Setting Three unique studies were performed from July 2000 through December 2000, Accessibility of 14 search engines was assessed using a structured search experiment. Quality of 25 health Web sites and content provided by 1 search engine was evaluated by 34 physicians using structured implicit review (interrater reliability >0.90). The reading grade level of text selected for structured implicit review was established using the Fry Readability Graph method.Main Outcome Measures For the accessibility study, proportion of links leading to relevant content; for quality, coverage and accuracy of key clinical elements; and grade level reading formulas.Results Less than one quarter of the search engine's first pages of links led to relevant content (20% of English and 12% of Spanish). On average, 45% of the clinical elements on English- and 22% on Spanish-language Web sites were more than minimally covered and completely accurate and 24% of the clinical elements on English- and 53% on Spanish-language Web sites were not covered at all. All English and 86% of Spanish Web sites required high school level or greater reading ability.Conclusion Accessing health information using search engines and simple search terms is not efficient. Coverage of key information on English- and Spanish-language Web sites is poor and inconsistent, although the accuracy of the information provided is generally good. High reading levels are required to comprehend Web-based health information.