Table 4.

Multivariate analyses of factors associated with RA-ILD.

Factor	P	Age- and gender-adjusted
		B-coefficient (SE)	P
RF	0.000	−0.001 (0.000)	0.017
ACPA	0.000	0.000 (0.000)	0.006
CD3−CD56+ NK cells (%)	0.000	−0.049 (0.023)	0.034
CD3−CD56+ NK cells (cells/μl)	0.002	−0.002 (0.001)	0.04
T cells (%)	0.000	0.046 (0.019)	0.016
CD4+ T cells (%)	0.005	0.036 (0.017)	0.038

RF: rheumatoid factor and ACPA: Antibodies to cyclic citrullinated peptides.