Table 2 Comparison of scores from the 5-, 10-, and 15-item OA-FUNCTION-CATs and the full item bank
From: A functional difficulty and functional pain instrument for hip and knee osteoarthritis
| Â | Total (n = 328) | Both hip and knee (n = 89) | Hip (n = 53) | Knee (n = 186) | ||||
|---|---|---|---|---|---|---|---|---|
Version | Mean (SD) | Range | Mean (SD) | Range | Mean (SD) | Range | Mean (SD) | Range |
Difficulty | Â | Â | Â | Â | Â | Â | Â | Â |
   5-CAT | 49.7 (10.7) | 23.7–82.3 | 47.2 (9.4) | 31.6–79 | 52.3 (11.2) | 35.8–82.3 | 50.1 (11) | 23.9–82.3 |
   10-CAT | 50.1 (10.9) | 23.7–91.2 | 47.6 (9.5) | 31–88.6 | 53.4 (11.5) | 37.9–91.2 | 50.4 (11.2) | 23.7–91.2 |
   15-CAT | 50.4 (11.2) | 22.7–95.6 | 47.8 (9.8) | 30.2–91.8 | 53.8 (11.8) | 37.4–95.6 | 50.6 (11.4) | 22.7–95.6 |
   Full item bank | 50.4 (10.8) | 24.2–96.7 | 47.6 (9.6) | 28.5–95.8 | 54.1 (9.7) | 37.5–75.7 | 50.7 (11.3) | 24.2–96.7 |
Pain | Â | Â | Â | Â | Â | Â | Â | Â |
   5-CAT | 49.9 (10.7) | 24.5–84.6 | 47.4 (8.9) | 31.1–74.8 | 53.7 (11.9) | 34.6–76.9 | 49.9 (10.8) | 24.5–84.6 |
   10-CAT | 50.5 (11.5) | 25.8–98.4 | 47.6 (8.6) | 31.7–66.1 | 55.2 (13.1) | 37.2–87.6 | 50.6 (11.8) | 25.8–98.4 |
   15-CAT | 50.6 (11.8) | 26.2–107.3 | 47.5 (8.6) | 32.8–67.8 | 55.3 (13.3) | 36.2–87.1 | 50.7 (12.3) | 26.2–107.3 |
   Full item bank | 50.7 (11.9) | 25–112.9 | 47.4 (8.2) | 32.2–72.6 | 55.3 (12.5) | 36.9–90.8 | 50.9 (12.7) | 25–112.9 |