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Table 5 Pain NRS and ODI scoring of studied patients at 3- and 6-month PO

From: Evaluating the outcome of classic laminectomy surgery alone versus laminectomy with fixation surgery in patients with lumbar canal stenosis regarding improvement of pain and function

Parameter Group A Group B P value
(n = 92) (n = 92)
NRS score Score Preoperative 6.6 ± 1.2 6.5 ± 1.3 0.936
At 3-month follow-up 4.2 ± 1.9a 3.4 ± 1.6a 0.0042
At 6-month follow-up 3.4 ± 1ab 3 ± 1.3a 0.0048
Percentage of decrease Frequency ≥ 50% 54 (58.7%) 69 (75%) 0.0188
< 50% 38 (41.3%) 23 (25%)
Mean percentage 47.4 ± 13.1 54.3 ± 16.6 0.002
ODI score Preoperative 32 ± 5 30.8 ± 4.6 0.063
At end of follow-up 18.3 ± 3.9 15.9 ± 3 0.0001
Percentage of decrease Frequency ≥ 50% 29 (31.5%) 48 (52.2%) 0.0045
< 50% 63 (68.5%) 44 (47.8%)
Mean percentage 41.7 ± 13.6 47.2 ± 12.5 0.0019
  1. This table shows that the success rate presented as the frequency of patients developed ≥ 50% reduction of both pain and ODI scores were significantly higher in group B versus group A