Probability of erosion progression over time in a single joint (GEE model, taking the correlation of four repeated reads into account as within-subject variation source)
| Compared conditions | OR (95% CI) | p Value |
|---|---|---|
| Treatment | ||
| MTX | 1 (reference) | |
| ETA | 0.54 (0.45 to 0.65) | <0.001 |
| MTX+ETA | 0.32 (0.26 to 0.39) | <0.001 |
| Swelling | ||
| Improvement/none | 1 (reference) | |
| Worse/persistent | 2.13 (1.69 to 2.69) | <0.001 |
| Baseline erosions | ||
| Normal | 1 (reference) | |
| Eroded | 2.00 (1.68 to 2.39) | <0.001 |
ETA, etanercept only; GEE, generalised estimating equations; MTX, methotrexate only; OR, odds ratio.