Table 2.
Comparison between the recurrence group and the nonrecurrence group in male patients
| Recurrent group (n = 35) | Nonrecurrent group (n = 27) | p value | |
|---|---|---|---|
| Median Age (range) | 63 (19ཞ78) | 70 (40ཞ86) | 0.0112 |
| Previous stone episodes before surgery (n) | 20 | 12 | 0.443 |
| The number of stones at surgery: Single/Multiple (n) | 11/24 | 15/12 | 0.0722 |
| Residual fragment * at the primary evaluation (n) | 15 | 10 | 0.795 |
| Median BMI at surgery | 24 (17ཞ41) | 23 (15ཞ29) | 0.206 |
| Median WA at the primary evaluation (range, mm2) | 54,484 (36651ཞ96356) | 53,211 (29225ཞ74076) | 0.103 |
| Median WA at the secondary evaluation (range, mm2) | 52,170 (29311ཞ106329) | 56,520 (23427ཞ76227) | 0.612 |
| Median change of WA (range, ±mm2) | + 2583 (−34113ཞ+12499) | + 1580 (−5798ཞ+17497) | 0.481 |
| Median change of WA per year (range, ±mm2/year) | + 545 (−13645ཞ+4166) | + 861 (−2525ཞ+11665) | 0.397 |
WA Waist area, BMI Body Mass Index
*Diameter longer than 2 mm on CT images