Table 2.
Distribution and floor/ceiling effects of HAAS-I and other measures in subjects with total hip arthroplasty
| Outcome measures | Test mean (SD) | Re-test mean (SD) | Floor/ceiling effects (%) |
|---|---|---|---|
| HAAS | 10.50 (3.62) | 10.52 (3.42) | 0/0 (0%,0%) |
| WOMAC | 17.49 (22.40) | n.a. | 10/0 (15%,0%) |
| WOMAC Pain | 14.68 (20.81) | n.a. | 21/0 (31%,0%) |
| WOMAC Stiffness | 19.22 (25.41) | n.a. | 32/0 (48%,0%) |
| WOMAC ADL | 17.91 (22.91) | n.a. | 11/0 (16%,0%) |
| NRS | 2.01 (1.86) | n.a. | 1/0 (2%,0%) |
| SF-36 Physical Function | 67.23 (29.14) | n.a. | 0/10 (0%,15%) |
| SF-36 Physical Role | 46.30 (44.22) | n.a. | 27/22 (40%,33%) |
| SF-36 Bodily Pain | 62.06 (30.00) | n.a. | 3/17 (5%,25%) |
| SF-36 General health | 32.23 (16.90) | n.a. | 0/0 (0%,0%) |
| SF-36 Vitality | 59.86 (17.42) | n.a. | 0/0 (0%,0%) |
| SF-36 Social function | 72.38 (23.80) | n.a. | 0/12 (0%,18%) |
| SF-36 Emotional Role | 65.17 (45.48) | n.a. | 20/40 (30%,60%) |
| SF-36 Mental Health | 67.00 (21.26) | n.a. | 0/4 (0%,6%) |
n.a. not available, SD standard deviation, ICC intraclass correlation coefficient, CI confidence interval, HAAS-I High-Activity Arthroplasty Score (Italian version), NRS numerical rating scale, WOMAC Western Ontario and McMaster University index, SF-36 Short Form Health Survey 36 items