Table 2.
Baseline criteria of the two groups after PSM
| Group A | Group B | P value | |
|---|---|---|---|
| Patients, n | 146 | 146 | |
| Genderb | |||
| Male | 96 (65.8%) | 101 (69.2%) | 0.625 |
| Female | 50 (34.2%) | 45 (30.8%) | |
| Age median (min–max)d | 53 (21–80) | 52 (21–79) | 0.895 |
| BMI (kg/m2)c | 24.7 ± 2.5 | 24.8 ± 2.3 | 0.875 |
| Symptom | |||
| Lumbagoe | 100 (68.5%) | 103 (70.5%) | 0.795 |
| Symptomlesse | 40 (27.4%) | 37 (25.3%) | 0.787 |
| Pyrexiae | 14 (9.6%) | 15 (10.3%) | 1.000 |
| Vomitinge | 28 (19.2%) | 27 (18.5%) | 1.000 |
| Hematuriae | 17 (11.6%) | 17 (11.6%) | 1.000 |
| Treatment history | |||
| ESWLe | 10 (6.8%) | 11 (7.5%) | 1.000 |
| Ureteroscopic lithotripsye | 11 (7.5%) | 11 (7.5%) | 1.000 |
| Percutaneous nephrolithotomye | 12 (8.2%) | 14 (9.6%) | 0.824 |
| Past history | |||
| Hypertensione | 42 (28.8%) | 41 (28.1%) | 0.889 |
| Diabetese | 13 (8.9%) | 13 (8.9%) | 1.000 |
| Degree of hydronephrosise | |||
| No | 39 (26.7%) | 40 (27.4%) | 0.911 |
| Mild | 53 (36.3%) | 52 (35.6%) | |
| Moderate | 46 (31.5%) | 44 (30.1%) | |
| Severe | 8 (5.48%) | 10 (6.8%) | |
| Urinary leucocytee | |||
| No | 37 (25.3%) | 33 (22.6%) | 0.555 |
| Possible | 32 (21.9%) | 35 (24.0%) | |
| Yes | 77 (52.8%) | 78 (53.4%) | |
| Urinary nitritee | 13 (8.9%) | 12 (8.2%) | 1.000 |
| Urine culturee | 21 (14.4%) | 23 (15.8%) | 0.864 |
| E. coli | 10 | 11 | |
| Enterococcus | 4 | 3 | |
| Proteus mirabilis | 2 | 3 | |
| Other | 5 | 6 | |
| Stone size (mm)d | 23.9 ± 9.0 | 24.3 ± 7.1 | 0.462 |
| Operation sitee | |||
| Left | 74 (50.7%) | 77 (52.7%) | 0.810 |
| Right | 72 (49.3%) | 69 (47.3%) | |
| Stone location | |||
| Ureteric stonee | 23 (15.8%) | 22 (15.1%) | 0.749 |
| Renal and ureteric stonee | 26 (17.8%) | 25 (17.1%) | 1.000 |
| Renal stonee | 84 (57.5%) | 85 (58.2%) | 1.000 |
| Staghorn stonee | 13 (8.9%) | 14 (9.6%) | 1.000 |
cNormally distributed variable data analysed with paired-sample t test
dNonnormally distributed variable data analysed with the Wilcoxon-Mann–Whitney test
eCategorical variable data analysed with the McNemar test