Microdecompression versus Open Laminectomy and Posterior Stabilization for Multilevel Lumbar Spine Stenosis: A Randomized Controlled Trial

Table 2

The mean differences of age between study groups.

Study variables	Study groups	N	Mean	SD	t-test	value
Age (years)	Group A	50	56.60	7.79	0.87	0.386
	Group B	50	55.20	8.28