Profiling Bispebjerg Acute Cohort: Database Formation, Acute Contact Characteristics of a Metropolitan Hospital, and Comparisons to Urban and Rural Hospitals in Denmark.

To present a metropolitan cohort, Bispebjerg acute cohort (BAC), and compare patient characteristics and outcomes with patients from urban and rural hospitals in Denmark. We linked data from seven Danish nationwide registries and included all acute contacts to non-psychiatric hospitals in the years 2016-2018. Acute hospital contacts to Bispebjerg and Frederiksberg Hospital constituted BAC, representing a solely metropolitan/urban catchment area. Patient characteristics and outcomes were compared to the rest of Denmark in an urban cohort (UrC) and a rural cohort (RuC), stratified by visit and hospitalization contact types. We identified 4,063,420 acute hospital contacts in Denmark and BAC constituted 8.4% (n=343,200) of them. BAC had a higher proportion of visits (65.1%) compared with UrC (52.1%) and RuC (45.3%). Patients in BAC more often lived alone (visits: BAC: 34.8%, UrC: 30.6%, RuC: 29.2%; hospitalizations: BAC: 50.8%, UrC: 36.7%, RuC: 37.2%) and had temporary CPR number (visits: BAC: 4.4%, UrC: 1.9%, RuC: 1.6%; hospitalizations: BAC: 1.5%, UrC: 0.9%, RuC: 0.8%). Visit patients in BAC were younger (BAC: 36, UrC: 42, RuC: 45 years, median), more often students (BAC: 18.0%, UrC: 14.0%, RuC: 12.5%), and had more contacts due to infectious diseases (BAC: 19.8%, UrC: 14.1%, RuC: 6.2%) but less due to injuries (BAC: 40.0%, UrC: 43.8%, RuC: 60.7%). Hospitalized patients in BAC had higher median age (BAC: 64, UrC: 61, RuC: 64 years) and fewer were in employment than in UrC (BAC: 26.1%, UrC: 32.1%, RuC: 28.1%). BAC Hospitalizations had a lower death rate within 30 days than in RuC (BAC: 3.0% [2.9-3.1%], UrC: 3.1% [3.0-3.1%], RuC: 3.4% [3.3-3.4%]), but a higher readmission-rate (BAC: 20.5% [20.3-20.8%], UrC: 17.3% [17.2-17.4%], RuC: 17.5% [17.5-17.6%]). Significant differences between BAC, urban, and rural cohorts may be explained by differences in healthcare structure and sociodemographics of the catchment areas.

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© 2022 Gregersen et al.

Déclaration de conflit d'intérêts

Professor Olav Wendelboe Nielsen reports speaker fees from Novartis and Roche, outside the submitted work. Dr Christian S Meyhoff reports indirect research grants from Boehringer Ingelheim to his department, research grants from Merck, Sharp & Dohme to his department, personal fees for research and lecture from Radiometer, outside the submitted work; In addition, Dr Christian S Meyhoff has a patent “Wireless Assessment of Respiratory and circulatory Distress (WARD) – Clinical Support System (CSS) - an automated clinical support system to improve patient safety and outcomes” pending to WARD 247 ApS, which he is a co-founder. The authors report no other conflicts of interest in this work.