In-hospital mortality of patients admitted to the intermediate care unit in hospitals with and without an intensive care unit: a nationwide inpatient database study
Main findingResult — go to the resultAdjusted odds ratio 1.15 95% CI 1.10–1.20Authors' conclusion
Admission in IMCUs in hospitals without ICUs increased, but was associated with higher in-hospital mortality.
Study context
- Population
- Patients admitted to Intermediate Care Units (IMCUs) in Japan, 2016–2022 (Diagnosis Procedure Combination Database)
- Participants
- 3,061,960 eligible IMCU patients
- Exposure
- IMCU admission in hospitals without vs with intensive care units (ICUs)
- With ICUsn = 2,296,939reference
- Without ICUsn = 765,021
- Outcome
- In-hospital mortality
Methodological detailsnationwide inpatient database, multilevel logistic regression adjusted for confounders
- Nationwide inpatient database
- Multilevel logistic regression adjusted for confounders
Main finding
As reported in the abstract
Adjusted odds ratio
1.15
95% CI 1.10–1.20
P < 0.001
Without ICUs vs With ICUs
aOR 1.15 (95% CI 1.10–1.20); P < 0.001
Observational data: associations, not effects.
Further findings
IMCU beds in hospitals without ICUs · 2016 to 2022
- Increase in IMCU beds in hospitals without ICUs (3,388 in 2016 to 5,403 in 2022)
- 59%
- Share of all IMCU beds in Japan in 2022 (n = 5,403/14,185)
- 38%
Transfer between IMCUs and ICUs
- Transfer between IMCUs and ICUs (n = 320,938/3,061,960); large variability between hospitals
- 10.5%
Original publication
In-hospital mortality of patients admitted to the intermediate care unit in hospitals with and without an intensive care unit: a nationwide inpatient database study. Crit Care. Published 20 January 2025. doi:10.
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