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

Table 6.

Analysis of the associations between hospital mortality rates and social and clinical variables in adult patients admitted to the intensive care unit between 2021 and 2022.

Variables Survivors Nonsurvivors
N(%) Mean ± SD N(%) Mean ± SD P value OR-95%
Gender 0,188
Male 55(28,2) 27(36,5)
Female 140(71,8) 47(63,5)
Age (years) 93,07 ± 2,66 93,24 ± 3,52 0,017 1,02 (0,93 − 1,11)
Frail patient? 0,526
No 142(72,8) 51(68,9)
Yes 53(27,2) 23(31,1)
Charlson Comorbidity Index (CCI) 2,67 ± 2,24 3,81 ± 2,70 0,001
Pre-Hospital Admission Functional Status 0,090
Independent 39(20,2) 7(9,5)
Requires assistance 89(46,1) 42(56,8)
Restricted 65(33,7) 25(33,8)
Source of ICU Admission 0,189
Surgical Center 17(8,7) 3(4,1)
Emergency Department 164(84,1) 64(86,5)
Hospital Ward 6(3,1) 6(8,1)
Home-care 5(2,6) 1(1,4)
Hemodynamics Room 3(1,5) 0(0,0)
ICU Admission Type 0,176
Elective Surgery 11(5,6) 1(1,4)
Urgent/Emergency Surgery 11(5,6) 2(2,7)
Medical 173(88,7) 71(95,9)
Covid-19 0,073
No 182(93,3) 64(86,5)
Yes 13(6,7) 10(13,5)
SAPS 3 score 55,82 ± 11,30 63,89 ± 11,60 0,481
Mechanical Ventilation D1 < 0,001
No 167(87,0) 30(41,1) b
Yes 25(13,0) 43(58,9) 9,575(5,111 − 17,937)
Cardiac Arrest 1 h 0,311
No 190(99,0) 71(97,3)
Yes 2(1,0) 2(2,7)
Dialysis Use < 0,001
No 191(99,0) 57(77,0) b
Yes 2(1,0) 17(23,0) 28,482(6,389 − 12,978)
Treatment Limitation 0,002
No 190(98,4) 64(90,1) b
Yes 3(1,6) 7(9,9) 6,927(1,739 − 27,585)

¹Chi-square test, with Yates correction, at the 95% confidence level. ²Mann‒Whitney U test at the 95% confidence level. ³Logistic regression, which uses odds ratios at the 95% confidence level.