Table 1.
Patient demographic, clinical, and renal stone characteristics compared between the non-prestent and prestent groups.
| Variables | Non-prestent group |
Prestent group |
p-value |
|---|---|---|---|
| (n = 86) | (n = 80) | ||
| Age (years), mean ± SD | 55.2 ± 12.6 | 58.3 ± 12.9 | 0.117 |
| Gender, n (%) | 0.566 | ||
| Male | 36 (41.9%) | 38 (47.5%) | |
| Female | 50 (58.1%) | 42 (52.5%) | |
| BMI (kg/m2) Mean ± SD | 26.5 ± 4.7 | 25.2 ± 5.5 | 0.115 |
| Comorbidities, n (%) | |||
| Diabetes mellitus | 24 (27.9%) | 18 (22.5%) | 0.534 |
| Hypertension | 50 (58.1%) | 41 (51.3%) | 0.462 |
| Dyslipidemia | 32 (37.2%) | 31 (38.8%) | 0.965 |
| Gout | 3 (3.5%) | 4 (5.0%) | 0.712 |
| Coronary artery disease | 4 (4.7%) | 2 (2.5%) | 0.683 |
| Preoperative eGFR, n (%) | 0.322 | ||
| eGFR <60 | 17 (19.8%) | 22 (27.5%) | |
| eGFR >60 | 69 (80.2%) | 58 (72.5%) | |
| Kidney side, n (%) | 0.302 | ||
| Right kidney | 39 (45.3%) | 29 (36.3%) | |
| Left kidney | 47 (54.7%) | 51 (63.8%) | |
| Total stone size (mm), (mean ± SD) | 13.6 ± 3.4 | 13.5 ± 3.8 | 0.879 |
| Total stone size in lower pole | 13.2 ± 3.5 | 13.1 ± 3.6 | 0.867 |
| Total stone size in non-lower pole | 13.9 ± 3.3 | 14.1 ± 4.1 | 0.835 |
| Stone location, n (%) | 0.162 | ||
| Lower pole | 38 (44.2%) | 45 (56.3%) | |
| Non-lower pole | 48 (55.8%) | 35 (43.8%) |
A p-value <0.05 indicates statistical significance.
Abbreviations: SD, standard deviation; BMI, body mass index; eGFR, estimated glomerular filtration rate.