Table 5.

Logistic regression analysis.

Independent Variables	First Model: Dependent Variable, Larsen Score at 10 Years			Second model: Dependent Variable, Annual Progression Rate
Independent Variables	p	OR	95% CI	p	OR	95% CI
Larsen score at baseline	< 0.001	18.060	6.576–49.597	< 0.01	2.616	1.286–5.322
Anti-CCP	0.01	3.794	1.325–10.859	NS	1.511	0.754–3.030
IgM RF	NS	1.276	0.445–3.659	NS	1.885	0.976–3.639
Disease duration at baseline	NS	1.589	0.616–4.097	NS	1.122	0.594–2.118
Time-averaged CRP	0.07	2.667	0.920–7.731	0.06	1.996	0.994–4.007
Time-averaged ESR	NS	1.338	0.488–3.665	NS	1.009	0.513–1.986
Time-averaged SJC	NS	1.877	0.727–4.844	< 0.01	2.251	1.189–4.259

Anti-CCP: anticyclic citrullinated peptide; RF: rheumatoid factor; CRP: C-reactive protein; ESR: erythrocyte sedimentation rate; SJC: swollen joint count; NS: not significant.