A comparison of the surgical mortality due to colorectal perforation at different hospitals with data from 10,090 cases in the Japanese National Clinical Database

Takeshi Ohki, Masakazu Yamamoto, Hiroaki Miyata, Yasuto Sato, Yoshihisa Saida, Tsuyoshi Morimoto, Hiroyuki Konno, Yasuyuki Seto, Koichi Hirata

Research output: Contribution to journalArticle

Abstract

Colorectal perforation has a high rate of mortality. We compared the incidence and fatality rates of colorectal perforation among different hospitals in Japan using data from the nationwide surgical database. Patients were registered in the National Clinical Database (NCD) between January 1st, 2011 and December 31st, 2013. Patients with colorectal perforation were identified from surgery records by examining if acute diffuse peritonitis (ADP) and diseases associated with a high probability of colorectal perforation were noted. The primary outcome measures included the 30-day postsurgery mortality and surgical mortality of colorectal perforation. We analyzed differences in the observed-to-expected mortality (O/E) ratio between the two groups of hospitals, that is, specialized and non-specialized, using the logistic regression analysis forward selection method. There were 10,090 cases of disease-induced colorectal perforation during the study period. The annual average postoperative fatality rate was 11.36%. There were 3884 patients in the specialized hospital group and 6206 in the nonspecialized hospital group. The O/E ratio (0.9106) was significantly lower in the specialized hospital group than in the nonspecialized hospital group (1.0704). The experience level of hospitals in treating cases of colorectal perforation negatively correlated with the O/E ratio. We conducted the first study investigating differences among hospitals with respect to their fatality rate of colorectal perforation on the basis of data from a nationwide database. Our data suggest that patients with colorectal perforation should choose to be treated at a specialized hospital or a hospital that treats five or more cases of colorectal perforation per year. The results of this study indicate that specialized hospitals may provide higher quality medical care, which in turn proves that government policy on healthcare is effective at improving the medical system in Japan.

Original languageEnglish
Article numbere5818
JournalMedicine (United States)
Volume96
Issue number2
DOIs
Publication statusPublished - 2017

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Databases
Mortality
Japan
Quality of Health Care
Peritonitis
Logistic Models
Regression Analysis
Outcome Assessment (Health Care)
Delivery of Health Care
Incidence

Keywords

  • Colorectal perforation
  • Differences in hospitals
  • Fatality rate
  • National clinical database (NCD)
  • Observed-to expected mortality ratio (O/E ratio)

ASJC Scopus subject areas

  • Medicine(all)

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A comparison of the surgical mortality due to colorectal perforation at different hospitals with data from 10,090 cases in the Japanese National Clinical Database. / Ohki, Takeshi; Yamamoto, Masakazu; Miyata, Hiroaki; Sato, Yasuto; Saida, Yoshihisa; Morimoto, Tsuyoshi; Konno, Hiroyuki; Seto, Yasuyuki; Hirata, Koichi.

In: Medicine (United States), Vol. 96, No. 2, e5818, 2017.

Research output: Contribution to journalArticle

Ohki, Takeshi ; Yamamoto, Masakazu ; Miyata, Hiroaki ; Sato, Yasuto ; Saida, Yoshihisa ; Morimoto, Tsuyoshi ; Konno, Hiroyuki ; Seto, Yasuyuki ; Hirata, Koichi. / A comparison of the surgical mortality due to colorectal perforation at different hospitals with data from 10,090 cases in the Japanese National Clinical Database. In: Medicine (United States). 2017 ; Vol. 96, No. 2.
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abstract = "Colorectal perforation has a high rate of mortality. We compared the incidence and fatality rates of colorectal perforation among different hospitals in Japan using data from the nationwide surgical database. Patients were registered in the National Clinical Database (NCD) between January 1st, 2011 and December 31st, 2013. Patients with colorectal perforation were identified from surgery records by examining if acute diffuse peritonitis (ADP) and diseases associated with a high probability of colorectal perforation were noted. The primary outcome measures included the 30-day postsurgery mortality and surgical mortality of colorectal perforation. We analyzed differences in the observed-to-expected mortality (O/E) ratio between the two groups of hospitals, that is, specialized and non-specialized, using the logistic regression analysis forward selection method. There were 10,090 cases of disease-induced colorectal perforation during the study period. The annual average postoperative fatality rate was 11.36{\%}. There were 3884 patients in the specialized hospital group and 6206 in the nonspecialized hospital group. The O/E ratio (0.9106) was significantly lower in the specialized hospital group than in the nonspecialized hospital group (1.0704). The experience level of hospitals in treating cases of colorectal perforation negatively correlated with the O/E ratio. We conducted the first study investigating differences among hospitals with respect to their fatality rate of colorectal perforation on the basis of data from a nationwide database. Our data suggest that patients with colorectal perforation should choose to be treated at a specialized hospital or a hospital that treats five or more cases of colorectal perforation per year. The results of this study indicate that specialized hospitals may provide higher quality medical care, which in turn proves that government policy on healthcare is effective at improving the medical system in Japan.",
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AU - Sato, Yasuto

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