Patient selection and preparation strategies for the use of contrast material in patients with chronic kidney disease

Table 1 Prevalence of chronic kidney disease in the USA[1]

		1988-1994	1999-2004
Stage 1	(persistent albuminuria + normal GFR)	1.7%	1.8%
Stage 2	(persistent albuminuria + GFR 60-89)	2.7%	3.2%
Stage 3	(GFR 30-59)	5.4%	7.7%
Stage 4	(GFR 15-29)	0.2%	0.4%
Stage 5	(kidney failure) 0.2%
Total		10.0%	13.1%

The National Kidney Foundation, USA 2003; The National Health and Nutrition Examination Surveys; and The National Center of Health Statistics. GFR: Glomerular filtration rate.