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Table 4 Risk factors for fUTI in renal stones following URSL performed after obstructive pyelonephritis treatment

From: Optimal timing of ureteroscopic lithotripsy after the initial drainage treatment and risk factors for postoperative febrile urinary tract infection in patients with obstructive pyelonephritis: a retrospective study

Variables

Univariable analysisa

Multivariable analysisa

Odds ratio

95% CI

p value

Odds ratio

95% CI

p value

Gender

      

 Male

1

     

 Female

1.99

0.69–5.75

0.20

   

Pre-URSL sepsis

      

 No

1

     

 Yes

2.13

0.74–6.11

0.24

   

Maximal Hounsfield unit value (HU)b

      

  < 750

1

     

  ≥ 750

1.12

0.39–3.17

0.84

   

Period from antipyresis to URSL (days)b

      

  < 20

1

     

  ≥ 20

0.9

0.31–2.64

0.85

   

Pre-URSL ureteral stent placement period (days)b

      

  < 21

1

  

1

  

  ≥ 21

4.3

1.13–16.4

0.033

5.16

1.28–20.8

0.021

Operation time (min)b

      

  < 75

1

  

1

  

  ≥ 75

3.35

1.11–10.1

0.032

4.00

1.25–12.8

0.020

  1. curvefUTI febrile urinary tract infection, CT computed tomography, HU hounsfield unit, URSL ureteroscopic lithotripsy
  2. aLogistic analysis
  3. bCutt off value of continuous variable is calculated from ROC