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Table 1 Comparison of patient characteristics between group GO and group PO

From: The change of cervical sagittal parameters plays an important role in clinical outcomes of cervical spondylotic myelopathy after multi-level anterior cervical discectomy and fusion

 Total (n = 89)Group GO (n = 54)Group PO (n = 35)t/zp
Age (year)58.97 ± 5.7958.19 ± 5.6860.17 ± 5.821.5960.114
Sex (male/female)40/4926/2814/210.5700.450
BMI25.74 ± 4.0025.47 ± 3.5326.17 ± 4.660.5500.582
Duration of symptoms (months)14.64 ± 8.0211.41 ± 5.4219.63 ± 8.854.618< 0.001
Follow-up time (years)2.57 ± 0.782.45 ± 0.642.76 ± 0.941.4100.159
JOA score
 Preoperative7.73 ± 2.848.39 ± 2.606.17 ± 2.942.4680.014
 Last follow-up13.16 ± 2.7414.74 ± 1.1210.71 ± 2.727.205< 0.001
 t/z8.2066.4145.144  
p< 0.001< 0.001< 0.001  
Recovery rate61.13% ± 21.48%75.00% ± 9.52%39.73% ± 16.62%7.948< 0.001
Operative segments   0.0870.768
 Three754629  
 Four1486