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Table 3 Comparison of cervical parameters between single-segment group and multi-segment group

From: Cervical sagittal parameters were closely related to Neck Disability Index score after anterior cervical decompression and fusion

   Total (n=212) Single-segment (n=78) Multi-segment (n=134) P
  Preoperative 11.17±8.56 11.69±8.51 12.42±8.55 .552
  Postoperative 13.30±7.53 14.15±8.04 13.56±7.21 .583
CL Follow-up 14.64±6.44 15.33±6.42 15.01±6.46 .738
  P 0.040 .183 .557  
  P’ <0.001 .009 .016  
  Preoperative 15.64±9.12 15.22±10.25 15.88±8.42 .616
  Postoperative 13.49±7.09 13.80±8.47 13.31±6.18 .632
SVA Follow-up 16.23±7.72 15.99±9.06 15.79±6.82 .277
  P 0.042 0.718 .015  
  P’ 0.978 0.588 .999  
  Preoperative 20.11±6.08 20.08±5.83 20.13±6.25 .954
  Postoperative 17.48±5.96 18.36±6.13 16.97±5.82 .103
T1S Follow-up 20.26±6.04 20.00±5.41 20.42±6.39 .623
  P <0.001 .206 <0.001  
  P’ 0.991 .999 .975  
  Preoperative 7.96±8.09 8.39±8.85 7.71±7.64 .556
  Postoperative 3.70±6.87 4.21±9.02 3.41±5.25 .418
TS-CL Follow-up 5.14±7.67 4.67±7.03 5.41±8.03 .502
  P 0.001 .012 <0.001  
  P’ 0.001 .013 .050  
  Preoperative 76.33±8.07 76.89±8.83 76.78±7.63 .923
  Postoperative 78.67±5.72 79.13±5.38 79.20±5.95 .924
SCA Follow-up 75.75±6.74 74.98±7.02 77.04±6.53 .033
  P 0.004 .164 .012  
  P’ 0.965 .358 .986  
  Preoperative 57.91±5.56 57.09±5.08 59.23±5.71 .006
  Postoperative 57.16±5.40 56.16±4.63 58.57±5.67 .002
NT Follow-up 56.87±5.18 56.11±4.33 58.11±5.55 .007
  P 0.639 .546 .711  
  P’ 0.252 .477 .280  
  Preoperative 78.59±7.25 78.00±7.59 79.73±7.03 .095
  Postoperative 77.50±6.52 75.78±5.39 79.26±6.80 <0.001
TIA Follow-up 78.95±6.62 78.78±5.51 79.86±7.21 .257
  P 0.483 .106 .924  
  P’ 0.996 .846 .998  
  Preoperative 20.84±6.17 20.92±5.87 20.79±6.35 .881
NDI score Follow-up 16.52±6.90 16.29±6.36 16.66±7.20 .714
  p <0.001 <0.001 <0.001  
BMI (Kg/m2)   23.78±2.62 23.15±2.43 24.15±2.67 .007
Sex (male/female)   147/65 62/16 85/49 .014
Age (years)   52.59±10.46 48.38±10.12 55.04±9.88 .000
Duration of symptoms (mouths)   9.38±16.95 9.04±18.28 9.58±16.19 .824
  1. Comparisons of preoperative, postoperative and follow-up cervical parameters, P was result of preoperative and postoperative comparison, P’ was result of preoperative and follow-up comparison