Table 4 The comparison between the first 24 procedures and the sequential 24 procedures
|  | Patients 1–24 | Patients 25–48 | P value |
|---|---|---|---|
Operation time, minutes, mean (SD) | 247.2 ± 47.3 | 213.5 ± 26.2 | 0.004 |
Estimated blood loss, milliliters, mean (SD) | 250.0 ± 148.2 | 242.9 ± 112.8 | 0.853 |
Length of hospital stay, nights mean (SD) | 8.2 ± 2.9 | 5.5 ± 1.8 |  < 0.001 |
Hb drop (g/dl), mean (SD) | 2.0 ± 1.5 | 1.8 ± 1.0 | 0.628 |