Table 6. Serum Creatinine Levels in Different Groups Before and After Stent Removal^a.

Variables	Group 1 (n = 30)	Group 2 (n = 31)	Group 3 (n = 30)	P value
Creatinine before stent removal	1.30 ± 0.20	1.44 ± 0.32	1.37 ± 0.26	0.15
Creatinine after stent removal	1.37 ± 0.19	1.42 ± 0.31	1.45 ± 0.23	0.42

^aData are expressed as mean ± SD.