TABLE 2.

Incidence of the composite outcomes, all-cause death, and cardiovascular events according to quartile of CysC/Cr ratio.

		Quartile of creatinine/Cystatin C ratio
Outcomes	Total (n = 1,966)	Q1 (n = 492)	Q2 (n = 491)	Q3 (n = 492)	Q4 (n = 491)	P for trend
No. of person-years	11,033	2,601	2,781	2,887	2,764
Composite outcomes
No of incidence	258	89	68	61	40
Incidence rate (1,000 person-year)	23.4	34.2	24.5	21.1	14.4	<0.001
All-cause death
No. of incidence	130	46	33	31	20
Incidence rate (1,000 person-year)	11.8	17.7	11.9	10.7	7.2	<0.001
Cardiovascular events
No. of incidence	163	55	43	40	25
Incidence rate (1,000 person-year)	14.8	21.1	15.5	13.9	9.0	0.01