Univariate and multivariate logistic regression models with 1-year change in RAMRIS erosion score ≥ 1 unit as dependent variable
| Univariate models | Final multivariate model | |||||
|---|---|---|---|---|---|---|
| Variable | OR | 95% CI for OR | p Value | OR | 95% CI for OR | p Value |
| Extensor carpi ulnaris tenosynovitis on US (yes vs no) | 7.00 | 1.77 to 27.68 | 0.006 | 7.18 | 1.57 to 32.82 | 0.01 |
| 28 swollen joint counts (per unit) | 1.11 | 0.98 to 1.26 | 0.08 | |||
| RAMRIS synovitis (per unit) | 1.26 | 0.96 to 1.65 | 0.10 | |||
| RAMRIS bone marrow oedema (per unit) | 1.23 | 0.96 to 1.54 | 0.08 | 1.38 | 1.01 to 1.90 | 0.04 |
| Gender (male vs female) | 4.75 | 0.96 to 23.57 | 0.06 | 4.38 | 0.79 to 24.32 | 0.09 |
| Age (per year) | 0.98 | 0.94 to 1.03 | 0.53 | |||
Age and sex were forced into the multivariate model. These variables were tested in univariate models, but eliminated due to p value >0.20: age, rheumatoid factor, anticyclic citrullinated peptide, C reactive protein, erythrocyte sedimentation rate, disease activity score with 28 joint counts, 28 tender joint counts, MRI tenosynovitis score, US radio/carpal synovitis, US extensor carpi dorsalis tenosynovitis, US extensor carpi radialis tenosynovitis and US flexor tenosynovitis.
RAMRIS, rheumatoid arthritis MRI score; US, ultrasonography.