Prevalence and related risk factors of chronic kidney disease among adults in Luxembourg: evidence from the observation of cardiovascular risk factors (ORISCAV-LUX) study

Table 1 Identification of CKD estimated by MDRD, according to levels of eGFR and ACR categories, among 1359 participants in the Observation of Cardiovascular Risk Factors in Luxembourg (ORISCAV-LUX) study, 2007-08, aged 18–69 years

eGFR and ACR categories and risk of adverse outcomes			ACR categories (mg/g Cr), description and range
			<30	30–300	>300
			Normal to mildly increased	Moderately increased	Severely increased
			Normoalbuminuria	Microalbuminuria	Macroalbuminuria
			A1	A2	A3	Total
GFR categories (ml/min/1.73 m²)	≥90 Normal and high	G1	612 (48.4%) [137,188]	37 (2.8%) [7919]	5 (0.3%) [940]	654 (51.5%) [146,047]
	60–89 Mild reduction	G2	658 (45.3%) [128,547]	23 (1.6%) [4647]	2 (0.1%) [356]	683 (47.1%) [133,550]
	30–59.9 Moderate impairment	G3	17 (1.1%) [3125]	0	2 (0.1%) [348]	19 (1.2%) [3473]
	15–29.9 Severe impairment	G4	1 (0.1%) [194]	0	1 (0.1%) [222]	2 (0.1%) [416]
	<15 Kidney failure	G5	0	0	1 (0.1%) [165]	1 (0.1%) [165]
		Total	1288 (94.9%) [269,054]	60 (4.4%) [12,566]	11 (0.7%) [2032]	1359 (100%) [283,652]

Data represent number (%) of participants having the pathology [Estimated population in Luxembourg]. Sample weighting used to present data
ACR albumin: creatinine ratio, CKD chronic kidney disease, GFR glomerular filtration rate
CKD identified in people with GFR <60 ml/min/1.73 m2 (GFR categories G3-G5) or markers of kidney damage. In the absence of evidence of kidney damage such as albuminuria, neither eGFR category G1 nor G2 fulfil the criteria for CKD

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