Variable | ULIF | O-TLIF | P-value |
---|---|---|---|
Duration of drainage (day) | 2.21 ± 0.41 | 2.64 ± 0.92 | 0.003* |
Total amount of postoperative drainage (ml) | 97.09 ± 73.30 | 219.06 ± 140.13 | 0.000* |
Drainage of first postoperative day (ml) | 57.08 ± 39.61 | 124.91 ± 71.92 | 0.000* |
Drainage of second postoperative day (ml) | 33.79 ± 31.67 | 61.40 ± 35.30 | 0.000* |
Drainage of third postoperative day (ml) | 30.00 ± 16.73 | 49.04 ± 25.30 | 0.029* |
Intraoperative blood loss (ml) | / | 85.38 ± 23.20 | / |