Table 4. Outcomes of Risk Classification System.

Risk Classification System	Patients, No./Total No. (%)
	30-d Serious Complications	90-d Mortality	90-d Functional Decline
Class I	85/198 (42.9)	7/198 (3.5)	19/186 (10.2)
Class II	69/123 (56.1)	13/122 (10.7)	10/105 (9.5)
Class III	39/55 (70.9)	10/54 (18.5)	7/37 (18.9)
C statistic	0.72	0.72	0.70