2A. Mean BILD score at baseline, among 1,035 participants, by disease duration category: Participants with longer disease duration (>20 years) had significantly higher mean damage scores as compared to those with shorter disease duration. 2B. Mean BILD scores at 6 years follow up, among 729 participants, by disease duration category: Overall higher BILD scores as compared to baseline, with significantly higher mean damage scores for patients with disease duration of >20 years as compared to shorter disease duration (p<0.001).