Figure 1.

Cumulative probability plots presenting the individual patients' change in DXR-BMD. (a) Change in digital X-ray radiogrammetry bone mineral density (DXR-BMD) of the entire study group (0 to 1 years, 1 to 2 years, 2 to 5 years). (b-d) Change in DXR-BMD stratified according to antibody to cyclic citrullinated proteins (anti-CCP) positive/negative patients (empty circle: anti-CCP > 25 U/ml, filled circle: anti-CCP ≤ 25 U/ml) for 0 to 1, 1 to 2 and 2 to 5 year change, respectively.