Table 1 General information of patients
| Â | Frequency | Percent (%) |
|---|---|---|
General information | Â | Â |
Gender | Â | Â |
Female | 17 | 40.5 |
Male | 25 | 59.5 |
Age group | Â | Â |
Youth | 6 | 14.3 |
Middle age | 23 | 54.8 |
Old age | 13 | 30.9 |
Pathogeny | Â | Â |
Congenital stenosis | 7 | 16.7 |
inflammation | 12 | 28.6 |
Urinary calculi related diseases | 15 | 35.7 |
Iatrogenic | 8 | 19.0 |
Balloon diameter (mm) | Â | Â |
6Â mm | 9 | 21.4 |
8Â mm | 33 | 78.6 |
Degree of stenosis | Â | Â |
Light | 18 | 42.9 |
Moderate | 16 | 38.1 |
Severe | 8 | 19.0 |
Degree of hydronephrosis | Â | Â |
Light | 6 | 14.3 |
Moderate | 15 | 35.7 |
Severe | 21 | 50.0 |
Indwelling time of drainage tube (month) | Â | Â |
6 | 33 | 78.6 |
9 | 9 | 21.4 |