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Table 1 Comparison of demographic characteristics in two groups

From: Clinical outcomes of transforaminal endoscopic lateral recess decompression by using the visualized drilled foraminoplasty and visualized reamed foraminoplasty: a comparison study

Characteristics VDF group (n = 45) VRF group (n = 42) P value
Age (years) 59.18 ± 8.84 57.83 ± 7.54 0.45
Gender: (male) (%) 28 (62.22) 23 (54.76) 0.48
BMI (kg/m2) 25.10 ± 4.11 24.73 ± 4.18 0.68
Diabetes (%) 7 (15.56) 5 (11.90) 0.62
Low extremity atherosclerosis disease (%) 6 (13.33) 7 (16.67) 0.66
Duration of symptoms (months) 12.58 ± 6.12 14.12 ± 7.11 0.28
Operative level: (L4/5)/(L4/5 + L5/S1) (%) 31 (68.89) 26 (61.90) 0.49
With/without herniated disc 22 (48.89) 27 (64.29) 0.15
Bartynski grade: Bartynski grade 3/(Bartynski grade 2+ Bartynski grade 3) (%) 18 (40.00) 14 (33.33) 0.52
Follow-up (months) 23.29 ± 5.36 21.57 ± 5.10 0.13
  1. The Age, BMI, Duration of symptoms, Follow-up were verified by student t-test; The Gender, Diabetes, low extremity atherosclerosis, operative level, combined herniated disc and Bartynski grade were verified by χ2 test. P < 0.05 represented significance. VDF visualized drilled foraminoplasty, VRF visualized reamed foraminoplasty