Asymptomatic Preclinical Rheumatoid Arthritis-Associated Interstitial Lung Disease

Table 1

Comparison of clinical characteristics in RA-ILD and RA-no ILD.

	All	RA-ILD	RA-no ILD	𝑃 value
Total number	103	63	40
Gender (F/M)	76/27	46/17	30/10	0.823
Mean age (year)	49.1 ± 14.7	53.0 ± 14.8	42.9 ± 12.4	<0.001*
Mean disease duration (years)	4.3 ± 5.7	5.0 ± 6.7	3.1 ± 3.0	0.049*
DAS28	4.4 ± 1.4	4.9 ± 1.2	3.7 ± 1.3	<0.001*
RF	402.0 ± 1268.2	555.8 ± 1599.1	159.8 ± 206.7	0.057
Anti-CCP	218.2 ± 171.7	231.8 ± 178.0	196.8 ± 161.1	0.316

^∗𝑃<0.05.