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. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: Spine J. 2014 Mar 22;14(12):2799–2810. doi: 10.1016/j.spinee.2014.03.024

Table 2.

Patient characteristics prior to treatment. All measures are reported as the mean and standard deviation except where noted.

Group Matched Unmatched
Number of Subjects 76 25
Sex (number of males/females) 35/41 15/10
Age (y) 40.15 (11.06) 45.88 (8.82)
Height (m) 1.72 (0.09) 1.74 (0.10)
Weight (kg) 70.52 (12.46) 73.44 (12.62)
Body mass index (kg/m2) 24.07 (3.23) 24.28 (2.63)