Table 1.
Baseline information
| Items | Control group (n=95) | Observation group (n=109) | χ2/t value | P-value |
|---|---|---|---|---|
| Age (years) | 43.96±5.44 | 45.17±4.57 | 1.703 | 0.090 |
| Gender | ||||
| Male | 48 | 60 | 0.416 | 0.519 |
| Female | 47 | 49 | ||
| BMI (kg/m2) | 22.88±1.95 | 22.75±1.98 | -0.468 | 0.641 |
| Affected side | ||||
| Left side | 43 | 52 | 0.122 | 0.727 |
| Right side | 52 | 57 | ||
| STONE score | 8.00 [7.00, 9.00] | 8.00 [7.00, 9.00] | 0.657 | 0.496 |
| Family history of stones | ||||
| Yes | 11 | 16 | 0.425 | 0.515 |
| No | 84 | 93 | ||
| Preoperative urinary tract infection | ||||
| Yes | 22 | 27 | 0.072 | 0.788 |
| No | 73 | 82 | ||
| History of hypertension | ||||
| Yes | 8 | 5 | 1.251 | 0.263 |
| No | 87 | 104 | ||
| History of diabetes | ||||
| Yes | 10 | 7 | 1.119 | 0.290 |
| No | 85 | 102 | ||
| Type of stone | ||||
| Multiple calculus | 71 | 89 | 1.435 | 0.231 |
| Staghorn calculus | 24 | 20 |
Note: BMI, Body Mass Index; STONE score, Stone Treatment Outcome Prediction Engine.