Table 2: Bivariate analysis of the FW/LE index < 10%

to predict foraminal decrease.

FW/LE index < 10%

OR (CI 95%)

p

Radiograph

Lateral

3.07 (1.43-6.58)

0.004

Flexion

3.59 (1.32-9.81)

0.013

Extension radiograph

4.01 (1.86-8.64)

< 0.0001

Magnetic resonance imaging

Left

0.195 (0.07-0.56)

0.002

Right

3.07 (1.43-6.58)

0.004

FW/LE = foraminal width/lower endplate.

CI95% = 95% confidence interval.