. 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 3. Tibia BML Volume vs WORMS scores.

(a) Lateral compartment
	0	1	2	3+	p-value
N	80	17	11	7
Mean	41.7	206.4	554.8	1193.3
Std Dev	122.1	364.1	555.8	1224.5
Minimum	0.00	0.00	55.82	167.09
Median	0.00	56.6	277.5	624.0	<0.001¹
Maximum	722.2	1485.0	1754.9	3163.2
n(%) = 0	67 (84%)	3 (18%)	0 (0%)	0 (0%)	<0.001²
n(%) >0	13 (16%)	14 (82%)	11 (100%)	7 (100%)	<0.001²
¹Kruskill-Wallis. All pairwise comparisons significant.
²Fisher's Exact test
		Spearman Correlation
		Coefficient	95% CI	p-value
		0.73	0.63, 0.80	<.0001
(b) Medial compartment
	0	1	2	3+	p-value
N	21	28	22	43
Mean	9.6	157.6	217.9	1394.5
Std Dev	41.5	231.3	262.0	1393.5
Minimum	0.00	0.00	0.00	0.00
Median	0.00	110.3	113.7	904.6	<0.001¹
Maximum	190.4	1168.8	916.4	5226.6
n(%) = 0	19 (90%)	10 (36%)	5 (23%)	1 (2%)	<0.001²
n(%) >0	2 (10%)	18 (64%)	17 (77%)	42 (98%)	<0.001²
¹Kruskill-Wallis. All pairwise comparisons significant.
²Fisher's Exact test
		Spearman Correlation
		Coefficient	95% CI	p-value
		0.75	0.65, 0.82	<.0001