title: The frequencies of disease names with the natural language used in the hospital information system.
abstract: The statistical behavior of disease names referred by physicians with the natural language in a large hospital information system is little known despite the theoretical and practical interest. To address this issue, we reviewed and investigated the usage-frequencies of 18,274 disease names, 10,288 for outpatient care and 7986 for inpatient care, referred from October 1983 to June 1992 with the notation of the natural language in Japanese by the use of the registration-retrieval system of disease names at Fukui Medical School, Japan. Consequently, we found that the investigated distributions did not conform to the Poisson distribution, but conformed well to the Polya-Eggenberger distribution in both cases of outpatient and inpatient care. It implies that the disease names with the natural language are possibly referred by physicians with some interrelations.
authors.affiliation: Department of Medical informatics, Shimane Medical University.
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Lin
authors.forename: K
authors.initials: K
authors.lastname: Yamamoto
authors.forename: I
authors.initials: I
authors.lastname: Kamae
authors.forename: N
authors.initials: N
authors.lastname: Sasagawa
authors.forename: Y
authors.initials: Y
authors.lastname: Yamashita
authors.forename: M
authors.initials: M
authors.lastname: Sudo
mesh_terms: D004194:Disease; D006751:Hospital Information Systems / Q000706:statistics & numerical data*; D006801:Humans; D007564:Japan; D009323:Natural Language Processing; D016012:Poisson Distribution; D009626:Terminology as Topic