Table 8 Association between stone characteristics among different procedures
From: Comparative study between radiation exposure in common urological procedures
N | Mean | SD | 95% confidence interval for mean | Minimum | Maximum | p value | |||
|---|---|---|---|---|---|---|---|---|---|
Lower bound | Upper bound | ||||||||
Stone size | ESWL | 33 | 16.6 mm | 3.8 | 15.2 | 18.0 | 10.00 mm | 20.00 mm | 0.001 |
URS | 33 | 12.1 mm | 2.8 | 11.1 | 13.1 | 10.00 mm | 20.00 mm | ||
PCNL | 33 | 27.5 mm | 3.3 | 26.3 | 28.7 | 20.00 mm | 30.00 mm | ||
Total | 99 | 18.7 mm | 7.3 | 17.3 | 20.2 | 10.00 mm | 30.00 mm | –- | |
Stone density | ESWL | 33 | 896.9 HU | 146.2 | 845.1 | 948.8 | 500.00 HU | 1000.00 HU | 0.675 |
URS | 33 | 863.6 HU | 166.8 | 804.4 | 922.8 | 450.00 HU | 1000.00 HU | ||
PCNL | 33 | 874.2 HU | 154.1 | 819.5 | 928.9 | 400.00 HU | 1000.00 HU | ||
Total | 99 | 878.2 HU | 155.0 | 847.3 | 909.2 | 400.00 HU | 1000.00 HU | –- | |