Table 1. Comparison of preexisting risk factors in patients with CIAKI after percutaneous coronary intervention (n=159).

*Statistically significant (p<0.05) association

CIAKI: contrast-induced acute kidney injury

Risk factors	Frequency (%)
	Yes	No
Male gender*	12 (7.6%)	147 (92.4%)
Age >50 years	7 (4.4%)	152 (95.6%)
Diabetes mellitus*	11 (6.9%)	148 (93.1%)
Hypertension*	12 (7.6%)	147 (92.4%)
Smoking	4 (2.6%)	155 (97.4%)
Obesity	3 (1.9%)	156 (98.1%)