Table 1.

Characteristics of rheumatoid arthritis-associated interstitial lung disease patients treated with anti-tumor necrosis factor agents

Values are presented as median (range) or number (%).

RA, rheumatoid arthritis; NS, not significant; ILD, interstitial lung disease; UIP, unusual interstitial pneumonia; TNF, tumor necrosis factor.

^aSeropositivity for rheumatoid factor or anti-cyclic citrullinated peptide antibody.

^bRA-UIP patients were diagnosed according to clinical symptoms and typical UIP pattern on high-resolution computer tomography scanning.