Table 1.

Incidence of contrast-induced nephropathy in treatment arms.

Study	CIN incidence NaHCO3 (%)	CIN incidence NS (%)
Merten	1.7	13.6
Hengel	2.6	12.1
REMEDIAL	1.9	9.9
RENO	1.8	21.8
Masuda	6.7	34.5
Ozcan	4.5	13.6
Shaikh	8.8	11.8
Kim	17.9	18.2
Chen	1.8	14.0
Heguilen	11.1	11.1
Saidin	31.0	14.3
Brar	13.3	14.5
Maioli	10.0	11.5
REINFORCE	4.2	2.7
Malpica	15.8	21.7
Tamura	1.4	12.5
Lin	13.3	16.7

CIN = contrast-induced nephropathy; NaHCO₃ = sodium bicarbonate; NS = normal saline.