Table 2.

Association of CystatinC with Atrial Fibrillation

Measure and Outcome	Quartile I	Quartile 2	Quartile 3	Quartile 4
Cystatin C and Prevalent AF
Range of Values — mg/liter	≤0.92	0.93-1.05	1.06-1.22	≥1.23
No.	1172	1227	1108	1156
No. with prevalent atrial fibrillation	48	66	97	131
Odds Ratio (95% CI)
Unadjusted	1.00	1.19 (0.80-1.76)	2.00 (1.38-2.88)	2.87 (2.03-4.07)
Adjusted*	1.00	1.05 (0.71-1.57)	1.52 (1.03-2.23)	1.53 (1.03-2.28)
Cystatin C and Incident AF
Range of Values — mg/liter	≤0.92	0.93-1.05	1.06-1.22	≥1.23
No. at risk	1124	1161	1011	1025
No. with incident atrial  Fibrillation	111	162	141	165
Hazard Ratio (95% CI)
Unadjusted	1.00	1.37 (1.07-1.75)	1.43 (1.11-1.84)	1.88 (1.47-2.41)
Adjusted*	1.00	1.21 (0.95-1.55)	1.11 (0.85-1.44)	1.14 (0.87-1.50)

^*Adjusted for age, gender, race, diabetes , CRP, LDL, HDL, prevalent CHD, prevalent CHF, left ventricular hypertrophy, SBP, DBP, use of angiotensin converting enzyme inhibitor, beta blocker, calcium channel blocker and diuretic.