Table 2 Multivariate analysis of peri-operative variables for reoperation risk, excluding post-operative CT as a pre-operative indicator

From: Clinical validation of an AI-assisted system for real-time kidney stone detection during flexible ureteroscopic surgery

Variables

Univariate analysis

Multivariate analysis

OR (95% CI)

p value

OR (95% CI)

p value

Proportion of RFs

 >2 mm

1.099 (1.059–1.142)

<0.001

1.100 (1.056–1.145)

<0.001

 1–2 mm

0.977 (0.956–0.990)

0.038

  

 <1 mm

0.934 (0.903–0.967)

0.036

  

Stone location

 Proximal

Reference

 

Reference

 

 Distal

7.69 (2.133–27.700)

0.002

8.791 (1.249–61.897)

0.029

 Multiple

2.56 (0.918–7.157)

0.072

2.578 (0.632–10.518)

0.187

Stone composition

 Calcium oxalate

Reference

 

Reference

 

 Calcium phosphate

2.74 (0.977–7.711)

0.055

4.394 (0.968–19.936)

0.055

 Uric acid

0.65 (0.195–2.179)

0.486

  

Age

0.99 (0.959–1.025)

0.599

  

Sex

1.53 (0.613–3.840)

0.361

  

Operative time

1.00 (0.993–1.013)

0.542

  

Hydronephrosis

0.64 (0.223–1.831)

0.405

  
  1. OR odds ratio, CI confidence interval, RFs residual fragments.
Back to article page