Table 4: Correlation between MRI findings and demographic characteristics.

Finding - Age BMI Family history
loss of disc height level(s) R* - 0.361 -
P* - 0.007 -
Disc bulge R 0.377 -0.323 0.304
P 0.005 0.017 0.025
Paracentral protrusion R - - -
P - - -
foraminal protrusion R 1.000 -1.000 -1.000
P 0.001 0.001 0.001
Ligamentum flavum hypertrophy R - 0.643 -
- - 0.013 -

*P= P.value, R= correlation coefficient.