Table 2.

Incident CKD by quartiles of mtDNA copy number

	Q1	Q2	Q3	Q4	P trend
Number of events	437	374	360	319
Person-year	37,326	38,833	38,739	39,722
Incident CKD per 1000 person-year	11.7	9.6	9.3	8.0
Incident rate ratio (95% CI)	1.00	0.82 (0.72 to 0.94)	0.79 (0.69 to 0.91)	0.69 (0.60 to 0.79)	<0.001

n=9058.