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Basement data.
| Items | Data BD (n = 71) | Data BO (n = 56) | P |
|---|---|---|---|
| Sex (M/F) | 39/32 | 28/28 | 0.584 |
| Age (years) | 63.99 ± 5.07 | 64.05 ± 5.33 | 0.930 |
| Levels | |||
| L3/L4 | 5 | 2 | |
| L4/L5 | 41 | 35 | |
| L5/S1 | 25 | 19 | |
| Disease Duration (months) | 26.32 ± 17.81 | 30.29 ± 15.51 | 0.194 |
| Operation duration (M) | 151.41 ± 19.03 | 128.48 ± 16.92 | 0.000 |
| blood loss volume(ml) | 102.11 ± 34.26 | 120.70 ± 32.89 | 0.003 |
| drainage (ml) | 71.25 ± 14.55 | 85.47 ± 19.01 | 0.011 |
| length of stay(d) | 8.92 ± 1.22 | 9.16 ± 1.12 | 0.427 |
