Table 5.

Comparison of various comorbidity measures

Parameter	Comorbidity Alone		With Demographics		With Demographics, Laboratory/Clinical Parameters, and Physical Impairments
	ROC (95% CI)	R2	ROC (95% CI)	R2	ROC (95% CI)	R2
DOPPS comorbidity short lista	0.67 (0.66 to 0.69)	0.10	0.70 (0.69 to 0.71)	0.14	0.73 (0.72 to 0.74)	0.18
CCI scoreb	0.62 (0.61 to 0.63)	0.06	0.67 (0.66 to 0.68)	0.11	0.72 (0.71 to 0.73)	0.17
Individual items on the CCI	0.65 (0.64 to 0.66)	0.08	0.69 (0.67 to 0.70)	0.12	0.73 (0.71 to 0.74)	0.17
Form 2728 checklist	0.65 (0.64 to 0.66)	0.08	0.68 (0.67 to 0.69)	0.12	0.72 (0.71 to 0.73)	0.17

^aIncludes items in the multivariable model, shown in Table 2.

^bScored as described in reference (3).