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Table 3 The VAS,ODI and JOA scores of patients at different time points

From: A comparison of the bilateral decompression via unilateral approach versus conventional approach transforaminal lumbar interbody fusion for the treatment of lumbar degenerative disc disease in the elderly

Variable   BDUA Control P-Value Significance
VAS scores post-surgery 3.45 ± 0.89 3.07 ± 1.15 0.1464 ns
3 months 1.33 ± 0.48 3.45 ± 0.43 < 0.0001 ****
Last time 1.25 ± 0.51 1.40 ± 0.62 0.3345 ns
ODI scores post-surgery 43.48 ± 19.30 40.52 ± 15.53 0.4158 ns
3 months 9.74 ± 6.71 10.33 ± 6.54 0.7287 ns
Last time     
JOA scores post-surgery 15.97 ± 5.12 17.13 ± 4.12 0.3507 ns
3 months 24.90 ± 2.33 25.17 ± 1.82 0.6252 ns
Last time 27.87 ± 2.40 28.27 ± 1.82 0.2777 ns
3 months JOA improvement ≥75% 13 11   
JOA improvement =50–74% 12 12   
JOA improvement =25–49% 5 5   
JOA improvement ≤24% 1 2   
Last time JOA improvement ≥75% 26 28   
JOA improvement =50–74% 4 1   
JOA improvement =25–49% 1 1   
JOA improvement ≤24% 0 0   
  1. Note: Data shown as number or mean ± standard deviation. P < 0.05, significant difference. Independent samples t test
  2. VAS, visual analog scale; ODI, oswestry disability index; JOA, Japanese Orthopaedic Association
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