Table 2.

Descriptive statistics of the collected data.

	N	Minimum	Maximum	Mean	SD
Age	55	29	82	64.89	11.948
Number of levels with medullary compression	55	1	4	2.42	1.117
Diameter of maximum compression site	50	2.10	7.80	4.7358	1.54680
Post diameter of maximum compression site	54	1.07	13.40	7.6098	2.34298
Area of maximum compression site	50	17.00	148.30	70.5520	25.12912
Post area of maximum compression site	54	70.00	260.00	119.6946	38.19944
Volume of maximum compression site	50	0.40	12.48	4.5105	2.91674
Post of volume of maximum compression site	47	0.62	14.83	6.2500	3.60587
Diameter difference	49	−5.10	9.00	2.7559	2.48894
Diameter ratio	49	0.19	5.77	0.7889	0.86403
Area difference	49	1.60	167.30	49.3757	34.32665
Area ratio	49	0.15	0.99	0.6065	0.19976
Volume difference	44	−0.14	6.52	1.7618	1.62804
Volume ratio	44	0.26	1.01	0.7043	0.17632
Recovery ratio, discharge	54	−0.33	1.00	0.1244	0.24230
Recovery ratio, 1 y	47	−0.33	1.00	0.1174	0.25041