History and Profile of Diagnosis Procedure Combination (DPC): Development of a Real Data Collection System for Acute Inpatient Care in Japan

Hayashida, Kenshi; Murakami, Genki; Matsuda, Shinya; Fushimi, Kiyohide

doi:10.2188/jea.je20200288

Cited by 168 publications

(175 citation statements)

References 31 publications

(33 reference statements)

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“…In Japan, automated ambient PM 2.5 measurement by standardized methods began around 2012, enabling nationwide studies of the health effects of ambient PM 2.5 exposure [ 14 , 15 ]. In 2017, the Ministry of Health, Labour and Welfare of Japan (MHLW) started to provide Diagnosis Procedure Combination (DPC) [ 16 , 17 ] survey data in aggregated form. In the survey, MHLW collected simplified medical records of each hospitalized patient from most of the acute-care hospitals in Japan.…”

Section: Introductionmentioning

confidence: 99%

Short-Term Associations of Ambient Fine Particulate Matter (PM2.5) with All-Cause Hospital Admissions and Total Charges in 12 Japanese Cities

Hasegawa

Toubou

Tsukahara

et al. 2021

IJERPH

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The short-term association between ambient particulate matter ≤2.5 microns in diameter (PM2.5) and hospital admissions is not fully understood. Studies of this association with hospital admission costs are also scarce, especially in entire hospitalized populations. We examined the association between ambient PM2.5 and all-cause hospital admissions, the corresponding total charges, and the total charges per patient by analyzing the hospital admission data of 2 years from 628 hospitals in 12 cities in Japan. We used generalized additive models with quasi-Poisson regression for hospital admissions and generalized additive models with log-linear regression for total charges and total charges per patient. We first estimated city-specific results and the combined results by random-effect models. A total of 2,017,750 hospital admissions were identified. A 10 µg/m3 increase in the 2 day moving average was associated with a 0.56% (95% CI: 0.14–0.99%) increase in all-cause hospital admissions and a 1.17% (95% CI: 0.44–1.90%) increase in total charges, and a 10 µg/m3 increase in the prior 2 days was associated with a 0.75% (95% CI: 0.34–1.16%) increase in total charges per patient. Short-term exposure to ambient PM2.5 was associated with increased all-cause hospital admissions, total charges, and total charges per patient.

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Section: Introductionmentioning

confidence: 99%

Short-Term Associations of Ambient Fine Particulate Matter (PM2.5) with All-Cause Hospital Admissions and Total Charges in 12 Japanese Cities

Hasegawa

Toubou

Tsukahara

et al. 2021

IJERPH

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“…We used a deidentified inpatient claims database, collected under Diagnosis Procedure Combination/Per-Diem Payment System, built by Medical Data Vision Co. (Tokyo, Japan). 4 Briefly, this payment system is part of public health insurance reimbursement system in Japan, 5 and therefore, the database consists of demographic/clinical information of all the hospitalisations for each hospital. The database included 272 Japanese acute-care hospitals that consented to data utilisation (covering 12.4% of all admissions into acute-care hospitals in Japan in January 2019).…”

mentioning

confidence: 99%

Large decrease in paediatric hospitalisations during the COVID-19 outbreak in Japan

Sano

Nakamura²,

Ninomiya

et al. 2021

bmjpo

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We evaluated the nationwide trends in paediatric hospitalisations including non-emergency hospitalisations during the COVID-19 pandemic in Japan. Using inpatient data from 272 acute-care hospitals covering 12.4% of total hospitalisations of all ages, we analysed the number of hospitalisations of children (aged 1–17 years) for weeks 9–21 of 2020 (during the outbreak) versus 2017–2019. Hospitalisation decreased during the outbreak by 38.4% (adjusted incidence rate ratio, 0.60; 95% CI, 0.53 to 0.69). There were reductions in communicable diseases and trauma, possibly through non-pharmaceutical interventions, but not in appendicitis. This study highlights the potential importance of reallocating paediatric care resources during the pandemic.

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“…Laboratory results, microbiological test results, imaging findings and medical records are not available in the DPC database. 32 The disease diagnoses, including comorbidities, and causes of death were based on the data extracted from the DPC database, and the diagnostic basis was not completely supported. Previous studies on PCP using the administrative or claims database diagnosed and defined PCP using ICD codes.…”

Section: Discussionmentioning

confidence: 99%

Estimation of treatment and prognostic factors of pneumocystis pneumonia in patients with connective tissue diseases

et al. 2021

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ObjectivesTo investigate short-term prognosis and prognostic factors for connective tissue disease-associated pneumocystis pneumonia (CTD-PCP) using the Japanese nationwide diagnosis procedure combination (DPC) inpatient database.MethodsThe present retrospective cohort study from April 2014 to March 2016 included data of patients with CTD-PCP extracted from the DPC database using the 10th revision of International Classification of Diseases and Injuries codes.ResultsIn 15 901 766 cases registered from 1329 hospitals, 333 of 67 890 patients who were admitted with PCP were diagnosed with CTD-PCP and included in the study. The median age was 71.0 years, and 214 (64.3%), 80 (24.0%), and 29 (8.7%) patients received sulfamethoxazole/trimethoprim (ST) monotherapy and pentamidine-containing and atovaquone-containing therapy, respectively. There were 114 (34.2%) in-hospital deaths, and the 30-day and 60-day in-hospital survival rates after PCP treatment initiation were 66.0% and 53.7%, respectively. Older age (HR 1.06, 95% CI 1.03 to 1.08) and concomitant interstitial lung disease (ILD) (HR 1.65, 95% CI 1.12 to 2.42) were poor prognostic factors. Patients who completed PCP treatment with ST monotherapy had a significantly higher survival rate than those treated with those not treated with ST monotherapy (p=0.015; log-rank test). Pentamidine versus atovaquone as second-line therapy was significantly higher with atovaquone (p=0.012; log-rank test).ConclusionOlder age and concomitant ILD were poor prognostic factors for CTD-PCP. ST was a reasonable first-line therapy in patients with CTD-PCP, and patients with inadequate response to ST treated with atovaquone tended to have a better prognosis than those treated with pentamidine.

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History and Profile of Diagnosis Procedure Combination (DPC): Development of a Real Data Collection System for Acute Inpatient Care in Japan

Cited by 168 publications

References 31 publications

Short-Term Associations of Ambient Fine Particulate Matter (PM2.5) with All-Cause Hospital Admissions and Total Charges in 12 Japanese Cities

Short-Term Associations of Ambient Fine Particulate Matter (PM2.5) with All-Cause Hospital Admissions and Total Charges in 12 Japanese Cities

Large decrease in paediatric hospitalisations during the COVID-19 outbreak in Japan

Estimation of treatment and prognostic factors of pneumocystis pneumonia in patients with connective tissue diseases

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