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Table 4 Comparisons of Neck Disability Index (NDI) scores between two groups

From: Zero-profile implant (Zero-p) versus plate cage benezech implant (PCB) in the treatment of single-level cervical spondylotic myelopathy

Group Case Preoperative NDI score 3 months Postoperative NDI score Final follow-up NDI score
Zero-p group 27 24.2 ± 4.1** 14.1 ± 2.2*,** 13.8 ± 1.9*,**
PCB group 30 24.9 ± 3.7 14.4 ± 2.3* 14.1 ± 1.8*
  1. *Compared with the same group of preoperative P < 0.05; **compared with PCB group at the same time points P > 0.05
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