Clinical application of the integrated multicenter discharge summary database.
We performed the multi-year project to collect discharge summary from multiple hospitals and made the big text database to build a common document vector space, and developed various applications. We extracted 243,907 discharge summaries from seven hospitals. There was a difference in term structure and number of terms between the hospitals, however the differences by disease were similar. We built the vector space using TF-IDF method. We performed a cross-match analysis of DPC selection among seven hospitals. About 80% cases were correctly matched. The use of model data of other hospitals reduced selection rate to around 10%; however, integrated model data from all hospitals restored the selection rate.
Department of Medical Informatics and Management, Chiba University Hospital.
Suzuki
S
Takahiro
Department of Welfare and Medical Intelligence, Chiba University Hospital.
Doi
D
Shunsuke
Department of Medical Informatics, Kochi University Hospital.
Hatakeyama
H
Yutaka
Department of medical informatics, Nagasaki University Hospital.
Honda
H
Masayuki
Medical Informatics, Osaka University Graduate School of Medicine.
Matsumura
M
Yasushi
St. Luke's International Hospital Medical Information System Center.
Shimada
S
Gen
Medical Information & Communication Center, Saga University Hospital.
Takasaki
T
Mitsuhiro
Department of Medical Informatics, Faculty of Medicine, Shimane University Hospital.
Tsumoto
T
Shusaku
Department of Medical Informatics, Kagawa University Hospital.
Yokoi
Y
Hideto
Department of Medical Informatics and Management, Chiba University Hospital.
Takabayashi
T
Katsuhiko
D000068598:Data Accuracy; D057225:Data Mining / Q000379:methods*; D003628:Database Management Systems; D016208:Databases, Factual; D057286:Electronic Health Records / Q000458:organization & administration*; D007564:Japan; D008498:Medical Record Linkage / Q000379:methods*; D015337:Multicenter Studies as Topic; D009323:Natural Language Processing; D063886:Patient Discharge Summaries / Q000706:statistics & numerical data*; D018511:Systems Integration; D018875:Vocabulary, Controlled