Table 3 Analysis of postoperative variables
From: Impact of weight on stone-free rate during percutaneous nephrolithotomy
Group 1 | (%) | Group 2 | (%) | Group 3 | (%) | Group 4 | (%) | P-value | |
|---|---|---|---|---|---|---|---|---|---|
Average (< 25) | Overweight (25–29.9) | Obese (30–39.9) | Morbid obese (> 40) | ||||||
Patients count(123) | 40 | 45 | 34 | 4 | |||||
Hospitalization duration (days) | 0.014 | ||||||||
Median(range) | 4 (3–5) | 4 (3–10) | 4 (3–7) | 5.5 (4–7) | |||||
Hemoglobin drop (g/dl) | 0.094 | ||||||||
Median(range) | .95 (0–2) | 1 (0–4) | 1.05 (1–4) | .95 (1–4) | |||||
Postoperative complications | 0.833 | ||||||||
Anemia(4) | 2 | 5 | 2 | 4.4 | 0 | 0 | 0 | 0 | |
Leakage < 24 h(9) | 3 | 7.5 | 3 | 6.7 | 3 | 8.8 | 0 | 0 | |
Persistent leakage > 24 h(2) | 0 | 0 | 0 | 0 | 2 | 5.8 | 0 | 0 | |
Colonic injury(1) | 1 | 2.5 | 0 | 0 | 0 | 0 | 0 | 0 | |
Postoperative DJ insertion (8) | 4 | 10 | 2 | 4.4 | 2 | 5.8 | 0 | 0 | 0.704 |
Fate of residual stones | 0.366 | ||||||||
ESWL(10) | 7 | 17.5 | 1 | 2.2 | 2 | 5.8 | 0 | 0 | |
2nd look(8) | 0 | 0 | 2 | 4.4 | 6 | 17.6 | 0 | 0 | |
Open surgery(2) | 0 | 0 | 2 | 4.4 | 0 | 0 | 0 | 0 | |
Follow-up (2) | 1 | 2.5 | 1 | 2.2 | 0 | 0 | 0 | 0 | |
Results | 0.623 | ||||||||
Number of patients with residual stones(22) | 7 | 17.5 | 7 | 15.5 | 8 | 23.5 | 0 | 0 | |
Number patients with stone-free status(101) | 33 | 82.5 | 38 | 84.5 | 26 | 76.5 | 4 | 100 | |