Table 3. Distribution of CCI scores among cancer patients with their relative risks of death within 1 year (relative risk figures from Charlson et al [30]).

CCI score	n = 848 (%)	Estimated relative risk of death within 1 year	95% confidence interval
0	132 (15.6)	1.00	–
1	183 (21.6)	1.45	1.25–1.60
2	175 (20.6)	2.10	1.57–2.81
3	169 (19.9)	3.04	1.96–4.71
4	114 (13.4)	4.40	2.45–7.90
5	56 (6.6)	6.38	3.07–13.2
6	14 (1.7)	9.23	3.84–22.20
7	3 (0.4)	13.37	4.81–37.22
9	2 (0.2)	–	–