The Evaluation of Risk Factors for Postoperative Infectious Complications after Percutaneous Nephrolithotomy

Table 1

Clinical characteristics of study population.

Parameter	Mean (SD)
Age (year)	51.07 (12.08)
Stone size	2.88 (1.30)
Surgery time (min)	133.66 (53.35)
Day of antibiotic use before surgery (days)	0.54 (1.44)
	(%)
Gender
Male	110 (67.1)
Female	54 (32.9)
Stone
<3	101 (61.6)
≥3	63 (38.4)
Diabetes	14 (8.5)
Staghorn calculi	7 (4.3)
Hydronephrosis	125 (76.2)
	45 (27.4)
Postoperative fever	20 (12.2)
Shock	1 (0.61)

size: the measurement of diameter of the largest stone based on preoperative CT scanning.
number: the total counting of the stone based on preoperative CT scanning.
: systemic inflammatory response syndrome.
: standard deviation.