Table 2. Baseline Characteristics and Treatment Outcomes of SWL vs. ECIRS Groups after Propensity Score Matching.
| Characteristics | SWL group (n=70) | ECIRS group (n=70) | p value | |
|---|---|---|---|---|
| Age (yr) | 53.6±14.6 | 56.9±13.5 | 0.170 | |
| Sex | >0.999 | |||
| Female | 27 (38.6) | 26 (37.1) | ||
| Male | 43 (61.4) | 44 (62.9) | ||
| MSL (mm) | 21.4±13.2 | 23.7±13.9 | 0.331 | |
| MSD (HU) | 1082.6±488.9 | 995.5±352 | 0.229 | |
| SHI (HU) | 202.3±91.1 | 217.2±107.5 | 0.376 | |
| SFR | 20 (28.6) | 50 (71.4) | <0.001 | |
| Success rate | 29 (41.4) | 61 (87.1) | <0.001 | |
| S-ReSC score | 4.73±11.62 | 3.41±20.5 | 0.354 | |
| Modified S-ReSC score | 6.54±11.61 | 5.14±2.78 | 0.330 | |
| Multiple stones | - | 47 (67.1) | ||
| Operating room time (min) | - | 73.14±28.23 | ||
| LOS (day) | - | 2 (1.25–2) | ||
| Hemoglobin change | - | -1.05±1.26 | ||
| Creatinine change | - | 0.07±0.35 | ||
| eGFR change | - | -3.83±12.30 | ||
SWL, shock-wave lithotripsy; ECIRS, endoscopic combined intrarenal surgery; MSL, maximal stone length; MSD, mean stone density; HU, Hounsfield units; SHI, stone heterogeneity index; SFR, stone-free rate; S-ReSC, Seoul National University Renal Stone Complexity; LOS, length of stay; eGFR, estimated glomerular filtration rate.
Data are presented as means±standard deviations, numbers (percentage), or medians (interquartile range).