Table 3.

Performance of the model across major patient typologies

Patient characteristics	GOF test Ĥ	p	GOF test Ĉ	p	O/E ratio	95% CI	aROC
Trauma patients	19.92	0.03	9.03	0.53	1.03	0.93–1.12	0.854
Non-operative admissionsa	14.86	0.14	17.8	0.06	1.01	0.98–1.04	0.825
Scheduled surgerya	11.5	0.32	27.39	<0.01	0.97	0.90–1.03	0.825
Emergency surgerya	4.97	0.89	12.88	0.23	1.00	0.95–1.05	0.809
No infectionb	8.57	0.57	14.77	0.14	1.00	0.97–1.02	0.846
Community-acquired infectionc	8.4	0.59	11.76	0.3	1.00	0.96–1.05	0.786
Hospital-acquired infectiond	15.21	0.12	7.11	0.72	1.02	0.97–1.07	0.77

GOF: Hosmer-Lemeshow goodness-of-fit; O/E: observed-to-expected mortality; CI: 95% confidence interval; aROC: area under receiver operating characteristic (curve)

^aNon-operative admissions, scheduled surgery emergency surgery: see data definitions appendix C, ESM

^bNo infection: Patients not infected at ICU admission

^cCommunity-acquired infection: Patients with community-acquired infection at ICU admission

^dHospital-acquired infection: Patients with hospital-acquired infection at ICU admission