Long term evaluation of disease progression through the quantitative magnetic resonance imaging of symptomatic knee osteoarthritis patients: correlation with clinical symptoms and radiographic changes

Table 2 Characteristics of osteoarthritis patients at baseline

	Slow	Intermediate	Fast	P value^a
Number	48	48	11
Age	60.9 ± 7.5	63.0 ± 7.7	66.0 ± 5.0^b	0.08
Female (%)	68%	64%	45%	0.35
Weight (kg)	78.8 ± 14.0	83.0 ± 14.7	89.7 ± 13.5^b	0.06
Body mass index	29.6 ± 4.3	31.0 ± 4.3	32.6 ± 2.7^b	0.06
Joint space width (mm)	2.98 ± 0.68	2.81 ± 0.58	2.74 ± 0.58	0.31
Global cartilage volume (mm³)	10,013 ± 2,512	10,425 ± 2,882	11,248 ± 2,557	0.37
Medial cartilage volume (mm³)	4,682 ± 1,155	4,936 ± 1,434	5,245 ± 1,165	0.36

Values are mean ± standard deviation. ^ap values from ANOVA. ^bp < 0.05, two-sample t test, fast versus slow.

ISSN: 1478-6362