Table 2.

Sample Summary.

	Control (non-ligamentous)	Ligamentous	p value
Case (n)	10	10
Diagnosis*	Lumbar spinal stenosis (7)	Lumbar spinal stenosis (10)
	Lumbar disc herniation (3)
Age (yrs) [range]	70.70±10.98[57-91]	75.70±4.83[67-82]	0.211
Sex (M:F)	5:5	6:4	0.653**
CSA of LF (mm2)	60.26±16.71	121.90±31.91	0.000102
CSA of spinal canal (mm2)	200.04±28.26	188.22±42.66	0.479
LSAR***	0.301±0.068	0.662±0.154	0.0000171

*Parentheses, number of cases

**Fisher’s exact test

*** Ligamentum flavum/spinal canal area ratio

Data are expressed as mean±SD.