Table 4.
Multivariable associations between patient characteristics and the prevalence of synovitis
| Model term | OR | 95% CI for OR | P value |
| Gender | |||
| Female | 1.104 | 0.279–4.659 | 1.000 |
| Male | 1 | ||
| Disease duration, years | |||
| <1 | 1.772 | 0.416–8.270 | 0.576 |
| 1 to <2.5 | 3.926 | 0.722–25.120 | 0.133 |
| 2.5 to <6 | 0.908 | 0.176–4.711 | 1.000 |
| ≥ 6 | 1 | ||
| Age, years | |||
| <40 | 1.423 | 0.3217–6.597 | 0.837 |
| 40 to <50 | 1.307 | 0.2818–6.179 | 0.951 |
| 50 to <60 | 1.258 | 0.205–7.421 | 1.000 |
| ≥ 60 | 1 | ||
| Anti-CCP | |||
| Positive | 7.611 | 1.475–74.870 | 0.010 |
| Negative | 1 | ||
| SSA | |||
| Positive | 1.588 | 0.376–7.413 | 0.691 |
| Negative | 1 | ||
| SSB | |||
| Positive | 0.393 | 0.130–0.967 | 0.084 |
| Negative | 1 |
Anti-CCP, cyclic citrullinated peptide antibody; CI, confidence interval; OR, prevalence odds ratio.