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Table 4 Presence of hydronephrosis according to patient characteristics among patients with AKI

From: Clinical utility of gray scale renal ultrasound in acute kidney injury

Patient characteristics Hydronephrosis absent (n= 768) Hydronephrosis present (n= 42) P value†
Demographics    
  Age ≥ 65 years 373 (48.6) 30 (71.4) 0.005
  Male sex 412 (53.6) 19 (45.2) 0.29
Medical history    
  BPH 29 (3.8) 3 (7.1) 0.284
  Abdominal malignancy 58 (7.6) 10 (23.8) 0.001
  Nephrolithiasis 12 (1.6) 3 (7.1) 0.018
  Other* 16 (2.1) 7 (16.7) <0.001
  CKD 419 (54.6) 25 (59.5) 0.43
  Prior normal RUS 168 (21.9) 15 (35.7) 0.04
  1. Data are presented as n (%).
  2. Abbreviations: Cr creatinine, RUS renal ultrasound, BPH benign prostatic hypertrophy.
  3. *Other includes neurogenic bladder, retroperitoneal fibrosis, congenital renal or urinary tract anomaly, prior pelvic surgery, prior ectopic pregnancy, prior pelvic inflammatory disease, prior surgery on kidney for reason other than cancer, and abdominal trauma.
  4. †Bivariate logistic regression.