Table 3 Comparison of stone heterogeneity index (SHI) in one-session success and stone-free status according to stone size.

From: Stone heterogeneity index as the standard deviation of Hounsfield units: A novel predictor for shock-wave lithotripsy outcomes in ureter calculi

 

N (%)

SHI (HU)

P-value*

Stone size ≥10 mm (N = 229)

One-session success

Yes

115 (50.2)

279.92 ± 115.66

<0.001

No

114 (49.8)

204.99 ± 85.85

 

One-session stone-free

Yes

109 (47.6)

274.62 ± 113.76

<0.001

No

120 (52.4)

213.54 ± 94.76

 

Stone size <10 mm (N = 375)

One-session success

Yes

301 (80.3)

224.15 ± 102.60

0.180

No

74 (19.7)

210.23 ± 78.89

 

One-session stone-free

Yes

291 (77.6)

221.43 ± 100.22

0.991

No

84 (22.4)

221.31 ± 84.30

 
  1. SHI: stone heterogeneity index.
  2. *Student’s two-sample t-test for stone heterogeneity index in each group.
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