Table 2 Comparisons between groups in terms of radiographical measurements.

From: Investigation of the predictive value of Hounsfield units in predicting stone culture results in urinary stone disease

 

Group A

Group B

p-valuea

HUcore

919.0 (694.0–1,250.0)

1073.0 (783.3-1,259.5)

0.060

HUproximal

733.0 (437.0–950.0)

930.5 (650.0–1,150.0)

< 0.001

HUdistal

502.0 (302.0–850.0)

815.0 (540.0–1,100.0)

< 0.001

AbsoluteHUdifference distal & proximal

−95.0 (−200.0)–(−40.0)

−60.0 (−100.0)–(−30.0)

0.008

AbsoluteHUdifference core & distal

268.0 (124.0–553.0)

170.0 (110.0–260.0)

< 0.001

AbsoluteHUdifference core & proximal

210.0 (61.0–344.0)

100.0 (58.0–200.0)

< 0.001

AbsoluteHUdifference core & periphery mean

225.5 (94.0–447.5)

140.0 (95.0–220.0)

< 0.001

RelativeHUdifference distal & proximal

83.3 (63.0–93.9)

92.0 (86.7–96.8)

< 0.001

RelativeHUdifference core & distal

161.8 (114.4–269.4)

119.4 (113.6–136.1)

< 0.001

RelativeHUdifference core & proximal

126.3 (109.6–171.1)

111.9 (106.2–121.6)

< 0.001

RelativeHUdifference core & periphery mean

1.40 (1.12–2.13)

1.17 (1.10–1.25)

< 0.001

  1. Data are expressed as median (25 th − 75 th percentile), aMann-Whitney U test. Group A: patients with positive stone cultures, Group B: patients with negative stone cultures, HU: Hounsfield unit.
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