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Table 4 Predictors of stone impaction in patients groups

From: Value of preoperative ureteral wall thickness in prediction of impaction of ureteric stones stratified by size in laser ureteroscopic lithotripsy

 

Univariate analysis

Multivariate analysis

OR

95% CI

p

OR

95% CI

p

All patients

Age

1.05

1.0–1.09

0.02

1.04

0.99–1.09

0.15

Hydronephrosis

3.06

0.85–11.0

0.086

–

–

–

UWT

1.44

1.16–1.79

0.001

2.23

1.58–3.13

< 0.001

Stone size

1.17

1.05–1.31

0.004

1.36

1.18–1.56

< 0.001

Stone site

Upper

Ref

     

Middle

0.17

0.04–0.81

0.026

0.08

0.01–0.5

0.007

Lower

1.21

0.59–2.48

0.61

4.37

1.57–12.2

0.005

Patients with stone size ≤ 10 mm

Age

1.0

0.91–1.12

0.93

–

–

–

Hydronephrosis

0.79

0.09–7.28

0.83

–

–

–

UWT

2.07

1.16–3.69

0.014

2.07

1.16–3.69

0.014

Stone size

0.94

0.53–1.67

0.84

–

–

–

Stone site

Upper

Ref

     

Middle

0.0

0.0–0.0

0.99

–

–

–

Lower

1.85

0.33–10.28

0.48

–

–

–

Patients with stone size > 10 mm

Age

1.04

0.99–1.08

0.11

–

–

–

Hydronephrosis

0.24

0.05–1.17

0.08

–

–

–

UWT

1.91

1.37–2.65

< 0.001

3.08

1.85–5.13

< 0.001

Stone size

1.01

0.87–1.17

0.88

–

–

–

Stone site

Upper

Ref

     

Middle

0.2

0.04–1.03

0.054

0.2

0.03–1.23

0.083

Lower

1.49

0.62–3.61

0.37

8.49

2.19–32.89

0.002

  1. UWT ureteral wall thickness
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BMC Urology

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