Elliott J
Healthc Inform. 1997 Jun;14(6):SS6-26.
The Healthcare Informatics Top 100 ranks the leading information system software providers to the healthcare industry by revenues. Due to the limited focus of the healthcare IS industry, many Top 100 companies serve other markets in addition to IS or healthcare. Thus, to most accurately compare companies, we asked cross-industry companies and companies with non-IS specific offerings to separate out those revenues specific to healthcare information systems. For some companies this proved an impossible task. In such cases, we relied on estimated revenues provided by professional sources throughout the industry. (Such companies are marked by an asterisk on the Top 100 list). According to industry analyst Sheldon I. Dorenfest of Sheldon I. Dorenfest & Associates, Chicago, the healthcare information systems marketplace can be divided into three parts: sales of computer and networking equipment account for 62 percent of revenue, software and software associated management services account for 33 percent, and consultation and other management services account for 5 percent. The Healthcare Informatics Top 100 features companies offering software and software associated management services as primary source of revenue (this includes resales of hardware and networking equipment). Companies not eligible for the Top 100 include investment companies, and companies for which consulting, non-software management services, or hardware or medical equipment is the primary source of revenue.
《医疗保健信息学百强榜》按营收对医疗行业领先的信息系统软件供应商进行排名。由于医疗信息系统行业的关注点有限，许多百强公司除了信息系统或医疗保健业务外，还服务于其他市场。因此，为了最准确地比较各公司，我们要求跨行业公司以及提供非特定于信息系统产品的公司分离出医疗信息系统的特定营收。对一些公司来说，这是一项不可能完成的任务。在这种情况下，我们依赖整个行业专业来源提供的营收估计值。（此类公司在百强榜单上用星号标注）。据芝加哥Sheldon I. Dorenfest & Associates的行业分析师Sheldon I. Dorenfest称，医疗信息系统市场可分为三个部分：计算机和网络设备销售占营收的62%，软件及与软件相关的管理服务占33%，咨询及其他管理服务占5%。《医疗保健信息学百强榜》列出的公司以提供软件及与软件相关的管理服务作为主要营收来源（这包括硬件和网络设备的转售）。不符合百强榜资格的公司包括投资公司，以及以咨询、非软件管理服务或硬件或医疗设备作为主要营收来源的公司。
