Table 4 Rank ordering of instrument performance by various discriminative tests for the known group comparisons
| Â | Â | Effect Size | RE | ROC (AUC) |
|---|---|---|---|---|
Self Rated Health | 1 | AQoL (-1.00) | AQoL (1.00) | AQoL (0.76) |
| Â | 2 | WOMAC (0.92) | WOMAC (0.84) | WOMAC (0.75) |
| Â | 3 | PCS (-0.84) | PCS (0.71) | PCS (0.67) |
| Â | 4 | VAS pain (0.79) | VAS pain (0.63) | VAS pain (0.65) |
OWL v Community | 1 | WOMAC (-0.79) | WOMAC (1.57) | WOMAC (0.70) |
group | 2 | VAS pain (0.74) | VAS pain (1.03) | VAS pain (0.70) |
| Â | 3 | AQoL (0.66) | AQoL (1.00) | AQoL (0.67) |
| Â | 4 | PCS (0.44) | PCS (0.46) | PCS (0.64) |
| Â | 5 | MCS (0.24) | MCS (0.13) | MCS (0.56) |