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. 2025 Jul 1;15:20486. doi: 10.1038/s41598-025-05343-z

Table 2.

Characterization of adult patients admitted to the intensive care unit between 2021 and 2022.

Variables N (%)
Age, mean (SD) 93,12 (2,91)
90–95 years 222 (82,5%)
95–100 years 39 (14,5%)
101 years or older 8 (3%)
Female 187 (69,5%)
Presence of any comorbidity 253 (97.7%)
≥ 2 comorbidities 208 (80,3%)
Chronic Cardiovascular Disease 230 (88,8%)
Chronic Respiratory Disease 34 (13,1%)
Chronic Renal Disease 21 (8,1%)
Charlson Comorbidity Index (CCI), mean (SD) 2,98 (2,42)
Frailty 76 (28,3%)
Pre-Hospital Admission Functional Status
Independent 46 (17,2%)
Requires assistance 131 (49,1%)
Restricted 90 (33,7%)
Source of ICU Admission
Emergency Department 234 (87%)
Hospital Ward 12 (4,5%)
Surgical Center 23 (8,5%)
ICU Admission Type
Medical 244 (90,7%)
Elective Surgery 12 (4,5%)
Urgent/Emergency Surgery 13 (4,8%)
ICU Admission Diagnostic Category
Infection/Sepsis 149 (55,4%)
Cardiovascular 35 (13%)
Neurological 25 (9,3%)
Respiratory 9 (3,3%)
Endocrine/Metabolic 6 (2,2%)
Other 45 (16,7%)

All variables are expressed as n (%). SD: standard deviation. CCI: The Charlson Comorbidity Index was measured in all patients.