Table 2 The perioperative outcomes of the two groups
Variable | Low implant density | High implant density | (p-Value) |
|---|---|---|---|
Operating time (minutes) | 278.4 ± 37.4 | 331.0 ± 86.7 | 0.004 |
Blood loss (ml) | 823.6 ± 212.1 | 1010.9 ± 450.9 | 0.048 |
Blood transfusion (ml) | 538.2 ± 295.3 | 597.6 ± 421.8 | 0.532 |
Hospital stays (days) | 18.7 ± 3.3 | 19.9 ± 3.5 | 0.161 |
Implant costs ($) | 10,191.0 ± 3326.48 | 13,577.3 ± 4939.2 | 0.003 |
Fused levels | 12.0 ± 1.6 | 10.3 ± 2.3 | 0.001 |
No. screws | 15.1 ± 2.9 | 19.6 ± 4.3 | <0.001 |
Screw density | 1.3 ± 0.2 | 1.9 ± 0.1 | <0.001 |
Cross-link | 0.6 ± 0.8 | 0.3 ± 0.6 | 0.06 |