. Author manuscript; available in PMC: 2009 Nov 1.

Published in final edited form as: Osteoarthritis Cartilage. 2009 May 27;17(11):1448–1452. doi: 10.1016/j.joca.2009.05.012

Table 1.

Description of OAI and BOKS cohorts used for the analysis of anatomic vs. mechanical alignment

	OAI Cohort (n=143^*)	BOKS Cohort (n=183)
Age, years (mean ± s.d.) (range)	60.5 ± 9.7 (45, 79)	65.9 ± 9.3 (47, 93)
BMI, kg/m2 (mean ± s.d.) (range)	30.2 ± 4.5 (20.9, 43.0)	30.4 ± 4.9 (21.5, 45.0)
%women	51.1	43.2
Mechanical Alignment (mean ± s.d.) (range)	-1.3 ± 4.0 (-12.6, 8.8)	-2.3 ± 4.3 (-11, 16)
Anatomic Alignment (mean ± s.d.) (range)	2.4 ± 3.9 (-7, 17)	3.0 ± 4.2 (-22, 10)
% of knees by KL grade
0	10.3	13.0
1	18.2	23.4
2	34.2	27.6
3	31.0	32.8
4	0	3.2

for OAI, this is the 160 subjects (minus those without full limb films) in the progression cohort whose data have been publicly released. For BOKS, this is the group obtaining long limb films who had follow-up at the third examination