Table 3

Rigidity index and hyaluronic acid concentration in patients with active Rheumatoid Arthritis and their controls

[HA]s (μg/ml)

RI

Controls (n = 40)

20.0 ± 9.0

7.0 ± 0.8

RA Patients (n = 100)

155.80 ± 44.0

11.0 ± 1.3

P

< 0.00001

< 0.001

[HA]s: serum concentration of hyaluronic acid; RI: rigidity index; RA: rheumatoid arthritis.

Luquita et al. Journal of Biomedical Science 2010 17:8   doi:10.1186/1423-0127-17-8