Table 1.

Distribution of Chronic Kidney Disease CKD stages based on the CKD-EPI equation *, by sex.

	Total		Male		Female
	N	%	N	%	N	%
	30,493		12,427	40.8	18,066	59.2
Age, years (mean (SD))	57.3	(17.9)	60.2	(16.9)	55.4	(8.3)
Age class (years)
19–44	8354	27.4	2400	19.3	5954	33.0
45–64	9826	32.2	4242	34.1	5584	30.9
65–74	6179	20.3	2977	24.0	3202	17.7
75–84	4827	15.8	2275	18.3	2552	14.1
85+	1307	4.3	533	4.3	774	4.3
CKD stage
eGFR ≥ 60 mL/min/1.73 m2	27,109	88.9	10,737	86.4	16,372	90.6
eGFR 45–59 mL/min/1.73 m2	1749	5.7	859	6.9	890	4.9
eGFR 30–44 mL/min/1.73 m2	1034	3.4	524	4.2	510	2.8
eGFR 29–15 mL/min/1.73 m2	406	1.3	190	1.5	216	1.2
eGFR < 15 mL/min/1.73 m2	195	0.6	117	0.9	78	0.4

* CKD-EPI equation is the recently developed race-free equation to estimate the glomerular filtration rate (eGFR) [7].