Table 3 Improvement of clinical outcome scores throughout the follow-up period.

From: Prospective comparative analysis of three types of decompressive surgery for lumbar central stenosis: conventional, full-endoscopic, and biportal endoscopic laminectomy

 

Total

(N = 106)

OPEN

(N = 29)

UNIPORT (N = 32)

BIPORT

(N = 45)

*p-value

Δ VAS back pain

 1 day

2.45 ± 2.81

1.31 ± 3.52

2.91 ± 2.38†

2.87 ± 2.42‡

0.036

 3 day

2.46 ± 3.00

1.24 ± 3.84

3.39 ± 2.33†

2.59 ± 2.58

0.017

 1 month

3.14 ± 2.61

2.92 ± 3.02

3.58 ± 2.20

2.98 ± 2.61

0.532

 3 month

3.24 ± 2.58

2.09 ± 2.79

4.34 ± 2.00†

3.21 ± 2.52

0.002

 6 month

3.19 ± 2.58

2.47 ± 2.59

3.76 ± 2.05

3.25 ± 2.83

0.145

 12 month

2.95 ± 2.58

2.12 ± 2.61

3.58 ± 2.13

3.04 ± 2.76

0.084

Δ VAS leg pain

 1 day

4.47 ± 3.04

4.90 ± 3.50

4.07 ± 2.63

4.49 ± 3.04

0.575

 3 day

4.54 ± 3.05

4.79 ± 3.30

4.25 ± 2.62

4.59 ± 3.21

0.782

 1 month

4.43 ± 2.92

4.64 ± 2.80

4.89 ± 2.48

3.96 ± 3.25

0.353

 3 month

4.54 ± 3.02

3.97 ± 3.32

4.81 ± 2.35

4.72 ± 3.26

0.484

 6 month

4.78 ± 2.83

4.42 ± 2.99

4.55 ± 2.79

5.18 ± 2.76

0.456

 12 month

4.66 ± 2.73

4.37 ± 2.82

4.36 ± 2.82

5.07 ± 2.61

0.427

Δ ODI

 1 month

16.51 ± 17.46

14.81 ± 15.80

18.15 ± 14.42

16.43 ± 20.46

0.760

 3 month

21.41 ± 16.89

17.53 ± 16.15

20.82 ± 18.33

24.33 ± 16.09

0.235

 6 month

20.99 ± 21.61

17.45 ± 19.38

19.23 ± 16.68

24.52 ± 25.62

0.338

 12 month

21.13 ± 21.73

18.07 ± 19.08

19.08 ± 17.02

24.57 ± 25.89

0.373

Δ SF-36 PCS

 1 month

17.23 ± 18.27

14.01 ± 16.32

23.24 ± 15.51

15.03 ± 20.48

0.080

 3 month

23.71 ± 17.70

17.78 ± 15.36

28.23 ± 18.70

24.31 ± 17.67

0.066

 6 month

25.12 ± 20.33

24.81 ± 14.85

26.16 ± 20.32

24.58 ± 23.53

0.942

 12 month

24.40 ± 20.28

24.31 ± 14.71

24.84 ± 20.68

24.14 ± 23.28

0.989

Δ SF-36 MCS

 1 month

6.95 ± 19.30

2.18 ± 21.71

13.21 ± 16.54

5.57 ± 18.71

0.067

 3 month

14.95 ± 19.95

9.84 ± 20.75

19.17 ± 19.93

15.24 ± 19.13

0.189

 6 month

14.77 ± 20.20

12.43 ± 17.78

16.60 ± 19.34

14.98 ± 22.43

0.724

 12 month

13.87 ± 20.40

12.23 ± 18.17

13.39 ± 19.36

15.26 ± 22.69

0.815

  1. The Δ (delta) value represents the change from baseline and each result presents the degree of clinical improvement.
  2. VAS, Visual analog scale; ODI, Oswestry disability index; SF-36, 36-Item Short Form Health Survey; PCS, physical component summary; MCS, mental component summary.
  3. *From analysis of variance.
  4. †Significant difference (p < 0.05) between OPEN and UNIPORT group, by post hoc comparison.
  5. ‡Significant difference (p < 0.05) between OPEN and BIPORT group, by post hoc comparison.
  6. §Significant difference (p < 0.05) between UNIPORT and BIPORT group, by post hoc comparison.
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