Table 1. Demographic and clinical properties of the patients.

	Group I: AKI	Group II: non-AKI
Patient characteristics	(n = 161)	(n = 793)	p-value
Age, years (mean + SD)	60.3 + 8.4	60.9 + 8.2	0.48**
Male, n (%)	109 (67.8)	563 (71.0)	0.40*
Female, n (%)	52 (32.2)	230 (29.0)
Hypertension, n (%)	71 (44.1)	325 (44.1)	0.47*
Diabetes mellitus, n (%)	52 (32.3)	267 (33.7)	0.74*
Smoking, n (%)	71 (44.1)	313 (38.5)	0.28*
Hyperlipidaemia, n (%)	67 (41.6)	367 (46.3)	0.27*
BMI (kg/m²) (mean + SD)	26.3 + 3.4	26.5 + 3.6	0.70**
Ejection fraction (%) (mean + SD)	53.8 + 8.5	54.4 + 8.7	0.40**
Basal heart rate (bpm) (mean + SD)	65.7 + 7.2	66.5 + 7.3	0.18**

AKI, acute kidney injury; BMI, body mass index.

*Pearson’s chi-squared test, **Student’s t-test