Table 3 Comparison of disc heights between the two groups
Subsidence group (n = 16) | Nonsubsidence group (n = 60) | P value | |
|---|---|---|---|
Preoperative operative levels | 9.0 ± 1.5 | 8.8 ± 1.5 | 0.463 |
Preoperative suprajacent levels | 10.2 ± 1.2 | 10.3 ± 1.4 | 0.794 |
Immediate postoperative operative levels | 11.9 ± 0.9 | 11.7 ± 1.4 | 0.541 |