Risk Factors of Urinary Tract Infection in Pediatric Patients with Ureteropelvic Junction Obstruction after Primary Unilateral Pyeloplasty
Table 2
Demographic and clinical characteristics of patients grouped by UTI and non-UTI.
Characteristic
UTI ()
Non-UTI ()
Age (month)
6.72 (3.85, 17.50)
36.00 (9.50, 72.00)
-9.02
< 0.001
Gender, (%)
2.38
0.017
Male
162 (86.17%)
245 (77.53%)
Female
26 (13.83%)
71 (22.47%)
Weight (kg)
9.00 (7.35, 11.53)
15.90 (10.00, 23.00)
-8.88
< 0.001
Height (cm)
70.00 (64.00, 84.00)
100.00 (72.00, 123.00)
-8.40
< 0.001
BMI
17.53 (16.00, 19.14)
16.76 (15.32, 18.63)
-2.70
0.007
Surgical modality, (%)
2.38
0.018
Open pyeloplasty
92 (48.94%)
189 (59.81%)
Laparoscopic pyeloplasty
96 (51.06%)
127 (40.19%)
Cr (μmol/L)
23.00 (20.30, 27.40)
29.40 (23.00, 38.00)
-7.54
< 0.001
BUN (mmol/L)
4.31 (3.30, 5.48)
3.02 (2.23, 4.51)
-6.96
< 0.001
eGFR (ml/min/m2)
82.50 (72.40, 92.03)
84.02 (73.89, 95.37)
-1.40
0.162
Neutrophil (%)
24.25 (18.00, 39.00)
33.80 (22.40, 42.70)
-4.26
< 0.001
Lymphocyte (%)
64.05 (51.00, 71.90)
56.80 (46.55, 67.45)
-4.07
< 0.001
N/L
0.38 (0.26, 0.77)
0.60 (0.34, 0.94)
-4.16
< 0.001
APD (cm)
3.20 (2.70, 4.15)
3.20 (2.50, 4.00)
-1.06
0.290
Renal cortex thickness (mm)
1.80 (1.28, 2.33)
2.20 (1.90, 3.40)
-6.50
< 0.001
Caliectasis, yes/%
44 (23.40%)
52 (16.46%)
1.92
0.055
Postoperative drainage, (%)
6.33
< 0.001
Internal drainage
164 (87.23%)
191 (60.63%)
External drainage
24 (12.77%)
124 (39.27%)
BMI: body mass index; Cr: creatinine; BUN: blood urea nitrogen; eGFR: estimated glomerular filtration rate; N/L: neutrophil/lymphocyte ratio; APD: renal pelvis anteroposterior diameter. Statistical analysis was performed by the chi-square test or Mann–Whitney test.
