. Author manuscript; available in PMC: 2014 Jun 1.

Published in final edited form as: Osteoarthritis Cartilage. 2013 Mar 18;21(6):806–814. doi: 10.1016/j.joca.2013.03.007

Table 2. Femur BML Volume vs WORMS scores.

(a) Lateral compartment
	0	1	2	3+	p-value
N	67	14	17	16
Mean	11.8	37.7	381.1	1153.7
Std Dev	88.7	55.2	285.0	615.0
Minimum	0.00	0.00	0.00	312.00
Median	0.0	0.0	331.9	1100.0	<0.001¹
Maximum	723.8	160.2	1043.4	2268.8
n(%) = 0	65 (97%)	8 (57%)	1 (6%)	0 (0%)	<0.001²
n(%) >0	2 (3%)	6 (43%)	16 (94%)	16 (100%)	<0.001²
¹Kruskill-Wallis. All pairwise comparisons significant.
²Fisher's Exact test
		Spearman Correlation
		Coefficient	95% CI	p-value
		0.88	0.83, 0.91	<.0001
(b) Medial compartment
	0	1	2	3+	p-value
N	45	25	21	24
Mean	8.0	26.1	355.2	1039.8
Std Dev	35.5	35.1	362.1	1709.0
Minimum	0.00	0.00	0.00	0.00
Median	0.00	0.00	248.14	405.86	<0.001¹
Maximum	199.9	91.4	1299.2	6502.5
n(%) = 0	42 (93%)	15 (60%)	3 (14%)	4 (17%)	<0.001²
n(%) >0	3 (7%)	10 (40%)	18 (86%)	20 (83%)	<0.001²
¹Kruskill-Wallis. All pairwise comparisons significant.
²Fisher's Exact test
		Spearman Correlation
		Coefficient	95% CI	p-value
		0.72	0.62, 0.80	<.0001