External review of procedure codes for intensive care, mechanical ventilation and extracorporeal membrane oxygenation for critically ill COVID-19 patients in the Swedish inpatient register: A nationwide observational cohort study
Authors' conclusion
Procedure codes for intensive care in the Swedish IPR showed low sensitivity and varied greatly between healthcare regions.
Study context
- Population
- Covid-19 patients with laboratory-verified SARS-CoV-2 infection requiring intensive care in Sweden, March 2020–August 2022
- Participants
- 8,992 / 5,262 / 29
- Exposure
- Procedure codes in the Swedish inpatient registry (IPR) vs Swedish Intensive Care Registry (SIR) as gold standard
- ICUn = 8,992
- Mechanical ventilationn = 5,262
- Extra-corporeal membrane oxygenation (ECMO)n = 29
- Outcome
- Sensitivity and/or PPV of IPR procedure codes for ICU, mechanical ventilation, ECMO and Covid-19 diagnosis code, with SIR as reference
Methodological detailsregistry validation, nationwide
- Registry validation
- Nationwide
Main finding
As reported in the abstract
Completeness of procedure codes in the IPR
ICU admission
39.7
%
Mechanical ventilation
78.2
%
ECMO
100%
Observational data: associations, not effects.
Further findings
ICU date in IPR matching actual ICU admission date (among those with ICU code)
- ICU date in IPR corresponding to actual ICU admission date
- 52.3%
Completeness of ICU registration in IPR between healthcare regions
- Range between healthcare regions
- 0.6 to 96.9%
Original publication
External review of procedure codes for intensive care, mechanical ventilation and extracorporeal membrane oxygenation for critically ill COVID-19 patients in the Swedish inpatient register: A nationwide observational cohort study. Eur J Anaesthesiol Intensive Care. Published 17 February 2025. doi:10.
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