Table 4 EQ-5D and SF-6D known group validity
From: The psychometric performance of generic preference-based measures for patients with pressure ulcers
| Â | EQ-5D | SF-6D | ||||||
|---|---|---|---|---|---|---|---|---|
| Â | N | M (SD) | ES | Sig | N | M (SD) | ES | Sig |
Category | Â | Â | Â | 0.001 | Â | Â | Â | 0.02 |
 0 | 87 | 0.364 (0.36) |  |  | 84 | 0.602 (0.11) |  |  |
 1 | 77 | 0.250 (0.36) | 0.32 |  | 76 | 0.580 (0.07) | 0.20 |  |
 2 | 122 | 0.160 (0.38) | 0.25 |  | 117 | 0.561 (0.10) | 0.27 |  |
 3/4 | 8 | 0.115 (0.34) | 0.12 |  | 8 | 0.536 (0.10) | 0.25 |  |
Ulcer status | Â | Â | Â | 0.005 | Â | Â | Â | 0.008 |
No wound | 160 | 0.310 (0.36) | Â | Â | 160 | 0.592 (0.10) | Â | Â |
Current ulcer | 130 | 0.160 (0.38) | 0.40 | Â | 125 | 0.560 (0.10) | 0.32 | Â |
N of comorbidities |  |  |  | 0.001 |  |  |  | P < 0.001 |
 0 |  | 0.397 (0.35) |  |  |  | 0.631 (0.13) |  |  |
 1 |  | 0.196 (0.37) | 0.57 |  |  | 0.578 (0.10) | 0.41 |  |
 2 |  | 0.229 (0.38) | 0.08 |  |  | 0.575 (0.10) | 0.03 |  |
 3 |  | 0.257 (0.36) | 0.07 |  |  | 0.548 (0.08) | 0.27 |  |
 4 |  | −0.030 (0.23) | 0.79 |  |  | 0.502 (0.12) | 0.58 |  |
 5+ |  | −0.024 (0.23) | −0.02 |  |  | 0.438 (0.75) | 0.09 |  |