Table 5.
Cost effectiveness ratio for complete van der Helm-van Mil prediction score, score without anti-CCP, score without RF, and score without anti-CCP and without RF.
| Diagnostic score | Cost on 100 patients (US dollars) | Number of patients correctly diagnosed | Incremental cost | Incremental number of correctly diagnosed | ICER |
|---|---|---|---|---|---|
| vHvM without RF and without anti-CCP (cut off score >5.66) | 1180 | 61 | — | — | — |
| vHvM adding RF (without anti-CCP) (cut off score >6) | 1380 | 64 | 200 | 4 | 50 |
| vHvM adding anti-CCP (without RF) (cut off score >6.7) | 7380 | 79 | 6200 | 18 | 344 |
| complete vHvM (with anti-CCP and RF) (cut off score >6.94) | 7580 | 80 | 6400 | 19 | 337 |
vHvM: van der Helm-van Mil prediction score; RF: rheumatoid factor; ICER: incremental cost effectiveness ratio.