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Table 1 Patients’ baseline characteristics of the four groups

From: Applications of the scoliosis width-to-length ratio for guiding selection of the surgical approaches of degenerative lumbar scoliosis

  Group A (n = 59) Group B (n = 28) Group C (n = 21) Group D (n = 34) P values
Age, years 62.9 ± 9.99 67.3 ± 8.54 58.2 ± 6.32 64.0 ± 3.29 0.383
Blood loss, ml 448 ± 121 612 ± 85 1118 ± 300 1250 ± 258 <0.001
Operation time, min 148 ± 30 170 ± 18 230 ± 61 236 ± 44 <0.001
Segment level of fusion 2.0 ± 0.87 2.5 ± 0.57 4.5 ± 1.1 4.6 ± 0.81 <0.001
No. of co-morbidities 0.97 ± 0.51 1.25 ± 0.5 1.11 ± 0.33 1.4 ± 0.55 0.32
No. of decompression 1.68 ± 0.78 2.0 ± 1.15 2.11 ± 0.93 2.33 ± 0.51 0.36
Hospital stay, days 16.45 ± 2.14 18.65 ± 1.56 15.35 ± 2.65 17.25 ± 1.54 0.006
  1. Group A, patients whose W/L <0.36 and treated with short fusion
  2. Group B, patients whoseW/L > 0.36 and treated with short fusion
  3. Group C, patients whose W/L <0.36 and treated with long fusion
  4. Group D, patients whoseW/L > 0.36 and treated with long fusion