. 2011 Mar 29;50(8):1473–1479. doi: 10.1093/rheumatology/ker129

Table 3.

Clinical model for predicting erosion-free status at 2-year follow-up

	Initial model^a	Partial model	Final model^b
Variables	OR (95% CI)	OR (95% CI)	OR (95% CI)
Age of RA onset (q5 years)	0.82 (0.72, 0.93)	0.80 (0.71, 0.90)	0.80 (0.71, 0.91)
Gender: male	1.7 (0.76, 3.7)	1.6 (0.74, 3.5)	1.6 (0.74, 3.5)
RA duration, years	0.86 (0.77, 0.97)	0.90 (0.78, 0.97)	0.86 (0.77, 0.96)
Anti-CCP negative	1.3 (0.70, 2.5)	1.4 (0.74, 2.6)	–
MDHAQ	0.81 (0.65, 1.0)	–	–

^aInitial model: age, gender, disease duration + all variables from univariate analysis with P < 0.25. ^bFinal model: significant variables only + gender.