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Table 1 Cohort characteristics

From: Point-of-care ultrasound for the detection of hydronephrosis in emergency department patients with suspected renal colic

N413
Male (%)208 (50.4)
Age, years mean (SD)42.2 (13.5)
BMI, mean (SD)28.96 (11.2)
BMI category (%)
 < 2027 (6.7)
 20–24.9111 (27.6)
 25–29.9126 (31.3)
 30–34.976 (18.9)
 > 3562 (15.4)
 Missing10
Time from POCUS to formal imaging, min
 Mean (SD)−31.81 (63.1)
 Median−40.50
 25th percentile−58.0
 75th percentile−24.0
Hydronephrosis present on POCUS
 No175 (42.4)
 Yes219 (53.0)
 Indeterminate19 (4.6)
Formal imaging modality
 CT350 (85.0)
 US63 (15.0)
Hydronephrosis on formal imaging
 Severe19 (4.6)
 Moderate78 (19.0)
 Mild113 (27.4)
 Absent202 (49.0)
2nd ER visit for Imaging results (%)49 (12)
Urologic Consult60 (17.4)
Urologic intervention/complication
 Lithotripsy15 (4.4)
 Stent20 (5.8)
 Percutaneous nephrostomy0
 Sepsis8 (2.3)
 Hospital admission17 (5.2)
 Death0
Stone or evidence of recent passage seen on formal imaging (%)205 (50)
  1. SD standard deviation, BMI body mass index, CT computed tomography, US ultrasound)