Table 3.

Univariate Cox model for 1-year mortality prediction and performance of each model in the validation population (n = 2716).

	Univariate Cox HR (95% CI)	AUC* (95%CI)
Wright comorbidity index
Qualitative (vs moderate)		0.631 (0.621–0.639)
Low	0.45 (0.23–0.87)
High	3.23 (2.20–4.73)
Original Charlson comorbidity index
Continuous	1.18 (1.14–1.23)	0.622 (0.606–0.638)
Qualitative (vs 0)		0.621 (0.605–0.636)
1	1.38 (1.01–1.88)
2	2.27 (1.71–3.02)
3	1.96 (1.37–2.81)
4	2.32 (1.55–3.47)
≥5	3.20 (2.33–4.40)
Age-adjusted Charlson comorbidity index Continuous	1.23 (1.19–1.27)	0.703 (0.689–0.716)
Qualitative (vs[0–2])		0.692 (0.678–0.705)
3,4	2.63 (1.44–4.79)
5,6	6.34 (3.59–11.18)
≥7	10.16 (5.78–17.87)
Score from model 1
Continuous	1.39 (1.34–1.44)	0.789 (0.761–0.816)
Rennes score (model 2)
Continuous	1.45 (1.39–1.52)	0.794 (0.768–0.821)
Qualitative (vs[0–3])		0.775 (0.748–0.802)
4–6	4.70 (2.26–9.80)
7–9	13.71 (6.70–28.06)
10–12	44.23 (21.44–91.21)

HR: Hazard Ratio; CI: Confidence Interval; *AUC was calculated for each model (continuous or categorical score).