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Table 1 The relevant data of patients and outcomes

From: Is laminectomy and fusion the better choice than laminoplasty for multilevel cervical myelopathy with signal changes on magnetic resonance imaging? A comparison of two posterior surgeries

Characteristics LF Group LP Group P Value
Cases 52 52  
Age (years old) 59.62 ± 8.46 57.35 ± 7.18 0.14a
Sex (male/female) 24/28 27/25 0.56b
Tobacco use (yes/no) 20/32 23/29 0.55b
Operation levels 3.87 ± 0.67 3.79 ± 0.73 0.56a
HSIR 2.26 ± 0.31 2.38 ± 0.37 0.08a
Duration of pre-operative symptoms (months) 5.85 ± 2.72 5.21 ± 2.64 0.23a
With OPLL (yes/no) 19/33 14/38 0.29b
Operative Time (minutes) 158.17 ± 18.33 149.73 ± 15.56 0.01a
Intraoperative Blood Loss 225.84 ± 25.90 213.51 ± 47.98 0.11a
Pre-operation
 JOA 11.62 ± 1.21 12.03 ± 1.41 0.11a
 VAS-N 4.04 ± 1.34 3.68 ± 0.92 0.11a
 SF-36(PCS) 34.29 ± 13.87 37.05 ± 11.43 0.27a
 SF-36(MCS) 36.76 ± 10.34 38.17 ± 11.59 0.51a
 ROM of Extension and Flexion(°) 42.26 ± 12.35 45.88 ± 14.24 0.17a
  1. HSIR high signal intensity ratio
  2. JOA Japanese Orthopedic Association score
  3. OPLL Ossification of the posterior longitudinal ligament
  4. VAS-N Visual Analogue Score of Neck
  5. SF-36 (PCS and MCS) The Physical and Mental Component Scores of the Short-Form 36
  6. ROM Range of Motion
  7. aT-test
  8. bChi-square test