. Author manuscript; available in PMC: 2010 Dec 1.

Published in final edited form as: Osteoarthritis Cartilage. 2009 Jun 26;17(12):1562–1569. doi: 10.1016/j.joca.2009.06.006

Table 3.

Associations of weight-bearing pain with maximal BML score, effusion score and synovitis score.

	Prevalence of knee pain (weight- bearing pain)	Univariate Analysis (RR of knee pain)	Multivariate Analysis^* (RR of knee pain)
Max BML Score
0	4/14 (28.6%)	Referent	Referent
1	18/47 (38.3%)	1.3	1.2
2	22/36 (61.1%)	2.1	1.9
3	42/63 (65.6%)	2.3	2.0
		*P for trend* = *0.0009*	*p for trend* = *0.006*

Effusion Score
0	7/26 (26.9%)	Referent	Referent
1	30/62 (48.8%)	1.8	1.7
2	35/55 (63.6%)	2.4	2.0
3	14/17 (82.4%)	3.1	2.6
		*p for trend* < *0.0001*	*p for trend* = *0.0004*

Synovitis Score
0	2/7 (28.6%)	Referent	Referent
1	42/79 (53.2%)	1.9	1.4
2	29/54 (53.7%)	1.9	1.5
3	13/20 (65.0%)	2.3	1.9
		*p for trend* = *0.20*	*p for trend* = *0.22*

Multivariate analysis results were adjusted for the other two MRI features (e.g. for the max BML score analysis, results were adjusted for effusion and synovitis).