Table 4.

Kidney Disease Related Outcomes in Patients with Normal Renal Function, Known Chronic Kidney Disease and Unsuspected Renal Insufficiency Stratified by IV dye administration

	Normal renal function at baseline (n=1446)			Baseline kidney disease* (n=853)			Unsuspected renal insufficiency (n=516 of the 853)
	Received IV dye N = 204	No IV dye N = 1242	p- value **	Received IV dye N = 79	No IV dye N = 774	p- value **	Received IV dye N = 53	No IV dye N = 463	p- value **
Acute kidney injury	3 (1.5%)	11 (0.9%)	0.43
Worsening kidney disease				1 (1.3%)	14 (1.8%)	1.0	1 (1.9%)	4 (0.9%)	0.42

^*Defined as either elevated Cr upon arrival or history of chronic kidney disease

^**Fisher’s exact test