Table 2.
Influencing factors on the success rate after fURS between lower calyx stone and non-lower calyx stone patients.
| Lower calyx | Non-lower calyx | |||||
|---|---|---|---|---|---|---|
| SF | Non-SF | p | SF | Non-SF | p | |
| Number of patients, n | 80 | 62 | 110 | 12 | ||
| Age, mean ± SD, years | 50.15 ± 11.42 | 48.85 ± 12.01 | 0.513a | 48.61 ± 12.42 | 50.50 ± 8.22 | 0.608a |
| Gender, n (%) | 0.682 | 0.004 | ||||
| Male | 45 (54.9%) | 37 (45.1%) | 66 (84.6%) | 12 (15.4%) | ||
| Female | 35 (58.3%) | 25 (41.7%) | 44 (100%) | 0 (0%) | ||
| BMI, mean ± SD, kg m−2 | 23.97 ± 3.38 | 23.34 ± 3.49 | 0.367a | 23.10 ± 2.99 | 24.84 ± 1.06 | 0.418a |
| Stone laterality, n (%) | 0.151 | 0.952 | ||||
| Left | 42 (51.2%) | 40 (48.8%) | 54 (90.0%) | 6 (10.0%) | ||
| Right | 38 (63.3%) | 22 (36.7%) | 56 (90.3%) | 6 (9.7%) | ||
| Hydronephrosis | <0.001 | 0.008 | ||||
| No/mild | 66 (79.5%) | 17 (20.5%) | 75 (96.2%) | 3 (3.8%) | ||
| Severe | 14 (23.7%) | 45 (76.3%) | 35 (79.5%) | 9 (20.5%) | ||
| Experience of operator, n (%) | <0.001 | 0.003 | ||||
| fURS ≥ 100 | 57 (79.2%) | 15 (20.8%) | 58 (98.3%) | 1 (1.7%) | ||
| fURS < 100 | 23 (32.9%) | 47 (67.1%) | 52 (82.5%) | 11 (17.5%) | ||
| Stone diameter (cm), n (%) | <0.001 | 0.796 | ||||
| ≤ 1 | 60 (68.2%) | 28 (31.8%) | 46 (92.0%) | 4 (8.0%) | ||
| >1 | 20 (37.0%) | 34 (63.0%) | 64 (88.9%) | 8 (11.1%) | ||
| Stone volume (cm3), n (%) | <0.001 | 0.890 | ||||
| ≤ 1 | 68 (65.4%) | 36 (34.6%) | 66 (89.2%) | 8 (10.8%) | ||
| >1 | 12 (31.6%) | 26 (68.4%) | 44 (91.7%) | 4 (8.3%) | ||
SD, standard deviation; fURS, flexible ureteroscope; SF, stone free.
a
t-test.
Others are chi-square test.