Table 3.

Risk factors related to different severity of RA-ILD assessed by logistic regression analysis. (A) logistic regression analysis performed to assess the risk factors associated with RA-ILD (RA-mild ILD + RA-advanced ILD). (B) logistic regression analysis performed to assess the risk factors associated with RA-advanced ILD

Variate	OR	95% CI	p-value
Age	1.061	1.020–1.104	0.003
BMI	1.248	1.125–1.383	< 0.001
RF	1.001	1.000-1.002	0.029
Osteoporosis	3.093	1.486–6.436	0.003
CA153	1.124	1.060–1.191	< 0.001

Variate	OR	95% CI	p-value
Age	1.156	1.031–1.297	0.013
smoking history	23.087	2.587-206.024	0.005
CA153	1.583	1.247–2.010	< 0.001

Abbreviations: OR, odds ratio; CI, confidence interval