Table 2.

Cross-correlation analysis between Digital Arthritis Index (DAI) and standard measures.

	DAI	Δ Joint size	Arthritis score
DAI		0.84*	0.87*
Δ Joint size	0.84∗		0.90*
Arthritis Score	0.87∗	0.90*
Histopathology
Inflammation score	0.93∗	0.89*	0.94*
Pannus	0.79∗	0.83*	0.78*
Cartilage damage	0.89∗	0.81**	0.87*
Bone resorption	0.78∗	0.82*	0.77*
Periosteal bone formation	0.71∗	0.64*	0.62*
Total score	0.91∗	0.87*	0.89*

n = 52 rats from three independent experiments were used for analysis. ^∗P ≤ 0.0001.