Variables | No-PTGBD group (n = 86) | PTGBD group (n = 27) | Z | P-value | ||
---|---|---|---|---|---|---|
Median | Mean rank | Median | Mean rank | |||
Postoperative hospital stay (d) | 2 | 50.49 | 3 | 77.74 | -3.865 | 0.000* |
Operation time (min) | 46 | 45.78 | 98 | 92.74 | -6.499 | 0.000* |
Blood loss (mL) | 20 | 51.70 | 50 | 73.87 | -3.202 | 0.001* |
Difficulty score | 2 | 48.09 | 4 | 85.37 | -5.336 | 0.000* |