Table 4 Correlation of surgical ligamentum flavum thickness and area of fibrosis (%) at L4-5 and L5-S1
L4-L5 r-value | p-value | 95 % CI | L5-S1 r-value | p-value | 95 % CI | |
|---|---|---|---|---|---|---|
Group 1 | R: -0.49 | R: 0.002 | R: -66.27–-22.21 | R: -1.00 | R: 0.25 | R: -191.75–131.49 |
Lt: -0.30 | L: <0.001* | L: -68.79–-37.32 | L: -1.00 | L: 0.065 | L: -125.74–16.82 | |
Group 2 | Rt: -0.56 | R: <0.001* | R: -57.39–-30.52 | R: -0.41 | R: 0.001 | R: -56.30–-23.24 |
L: -0.51 | L: <0.001* | L: -52.02–-26.23 | L: -0.53 | L: 0.002 | L: -72.38–-23.92 | |
Group 3 | n(1) | R: 0.95 | R: 0.047 | R: -111.05–-2.00 | ||
L: 0.85 | L: 0.085 | L: -116.13–-17.05 |