Table 3.

β Coefficients for Poor HRR (<16 beats/min) by Quartile of Kidney Function

	Quartile
		II		III		IV
	I	β Coefficient	P	β Coefficient	P	β Coefficient	P
Cystatin C (mg/L)
Range	0.35-0.92	0.93-1.06		1.07-1.28		>1.29
Unadjusted	—	−0.88	0.45	−4.8	<0.0001	−6.7	<0.0001
Adjusted	—	+0.62	0.62	−2.5	0.06	−3.6	0.01
eGFR (mL/min)
Range	>90	76.2-89.9		62.5-76.1		8.1-62.4
Unadjusted	—	−2.10	0.08	−2.8	0.01	−6.2	<0.0001
Adjusted	—	−1.20	0.36	−1.5	0.26	−4.3	0.003
Creatinine (mg/dL)
Range	0.5-0.9	<0.9-1.0		1.1-1.2		>1.3
Unadjusted	—	−0.15	0.90	−2.4	0.03	−4.2	0.0003
Adjusted	—	−0.59	.66	−1.8	0.14	−3.0	0.03

Note: Adjusted for all variables in Table 1 (except kidney function variables). To convert GFR in mL/min to mL/s, multiply by 0.01667; serum creatinine in mg/dL to μmol/L, multiply by 88.4.