Trained intensivist coverage and survival outcomes in critically ill patients: a nationwide cohort study in South Korea

Annals of Intensive Care

Table 4 Subgroup analyses for in-hospital mortality

Variable	OR (95% CI)	P value
Age > 65 years (n = 689,525)
Intensivist group (non-intensivist group)	0.70 (0.68, 0.73)	< 0.001
Age ≤ 65 years (n = 457,968)
Intensivist group (non-intensivist group)	0.75 (0.73, 0.77)	< 0.001
CCI ≤ 3 (n = 860,894)
Intensivist group (non-intensivist group)	0.70 (0.68, 0.72)	< 0.001
CCI > 3 (n = 286,599)
Intensivist group (non-intensivist group)	0.78 (0.76, 0.79)	< 0.001
Surgery associated admission
Intensivist group (non-intensivist group)	0.77 (0.75, 0.78)	< 0.001
Non-surgery associated admission
Intensivist group (non-intensivist group)	0.70 (0.68, 0.72)	< 0.001
Mechanical ventilator support group
Intensivist group (non-intensivist group)	0.73 (0.71, 0.75)	< 0.001
No mechanical ventilator support group
Intensivist group (non-intensivist group)	0.78 (0.77, 0.81)	< 0.001
CRRT use group
Intensivist group (non-intensivist group)	0.95 (0.91, 0.98)	0.047
No CRRT group
Intensivist group (non-intensivist group)	0.70 (0.68, 0.71)	< 0.001
ECMO support group
Intensivist group (non-intensivist group)	0.92 (0.78, 0.97)	0.046
No ECMO support group
Intensivist group (non-intensivist group)	0.73 (0.71, 0.74)	< 0.001

OR odds ratio; CI confidence interval; ICU intensive care unit; CCI Charlson comorbidity index; CRRT continuous renal replacement therapy; ECMO extracorporeal membrane oxygenation