The impact of performance status and comorbidities on the short-term prognosis of very elderly patients admitted to the ICU

Table 2 Results of final model and 10,000 replications bootstrap

Variable	Odds ratio	95% CI	Bootstrap bias	Bootstrap 95% CI	P
SAPS 3, per point increase	1.08	1.06-1.10	<0.001	1.061-1.095	<0.001
Charlson commorbidity index, per point increase	1.16	1.07-1.27	0.001	1.070-1.271	0.001
Performance status
0	Ref	Ref	Ref	Ref	-
1	1.61	1.05-2.64	0.003	1.072-2.657	0.033
2	2.39	1.38-4.13	0.008	1.355-4.264	<0.001
Non-full code status	11.74	6.22-22.16	0.04	5.783-24.057	<0.001

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