Table 4 Subgroup analysis of stone anatomical location and its association with immediate stone-free rate and 3-month stone-free rate
Factors | n (RU) | Immediate stone-free rate, n (%) | p value | 3-month stone-free rate, n (%) | p value |
|---|---|---|---|---|---|
Stone anatomical location | |||||
Kidney | 0.128 | 0.195 | |||
Inferior calyx | 8 | 8 (100) | 6 (75.0) | ||
Medial calyx | 3 | 2 (66.7) | 1 (33.3) | ||
Superior calyx | 2 | 1 (50.0) | 0 (0) | ||
Pyelum | 10 | 5 (50.0) | 4 (40.0) | ||
Ureter | –a | 0.242 | |||
Distal ureter | 9 | 9 (100) | 9 (100) | ||
Proximal ureter | 7 | 7 (100) | 6 (85.7) | ||