Table 4 Relationship between selected risk factors and progression of RA-ILD.

From: Predictors of long-term prognosis in rheumatoid arthritis-related interstitial lung disease

 

beta coefficient

P-value

Age

0.057

0.015

MMP13 (log Year 5—log Year 0)

1.072

0.156

CXCL11 (log Year 5—log Year 0)

0.253

0.509

  1. Descriptive analyses showed differences in risk of RA-ILD progression for age, RF, and changes (log Year 5-log Year 0) in serum levels of CXCL11/ITAC and MMP13. We conducted Spearman correlation analyses for continuous variables to exclude highly correlated variables (r > 0.5 and p < 0.05) from the final logistic regression model in order to avoid multicollinearity. Based on these considerations and impact on AIC values, age, MMP-13 (log Year 5-log Year 0), and CXCL11 (log Year 5-log Year 0) were selected to include in the final model.