Katsuhiko Nakagawa

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Medical expense has grown rapidly in Japan. It could be caused by the increase of the patient number and the increase of medical expense per patient. We studied the latter factor on drug expenditure from 1996 to 2002 using the prescription data stored in the data warehouse of one hospital. We found that the drug expenditure per patient had increased 1.32(More)
To share healthcare information and to promote cooperation among healthcare providers and customers (patients) under computerized network environment, a non-profit organization (NPO), named as OCHIS, was established at Osaka, Japan in 2003. Since security and confidentiality issues on the Internet have been major concerns in the OCHIS, the system has been(More)
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