Table 2.
Pain severity (items 1–4) and pain interference with function (items 5–10) scores, percentage of minimum scoring and communalities for the CBPI items, pain severity sum, pain interference with function sum and the CBPI items totaled
| All OA dogs (n = 58) | OA dogs with CBPI ≥1 (n = 49) | Control dogs (n = 21) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| CBPI item | Median (min–max) | % Floorc | Communalities | Median (min–max) | % Floorc | Communalities | Median (min–max) | % Floorc | Communalities |
| Pain at its worsta | 3 (0–8) | 24.6 | 0.76 | 4 (0–8) | 12.2 | 0.74 | 0 (0–1) | 95.2 | NA |
| Pain at its leasta | 0 (0–5) | 54.1 | 0.80 | 1 (0–5) | 46.9 | 0.76 | 0 (0–0) | 100 | NA |
| Pain on averagea | 2 (0–6) | 31.7 | 0.95 | 2 (0–6) | 20.4 | 0.94 | 0 (0–0) | 100 | NA |
| Pain right nowa | 1 (0–6) | 42.6 | 0.82 | 2 (0–6) | 32.7 | 0.78 | 0 (0–0) | 100 | NA |
| General activityb | 2 (0–10) | 34.4 | 0.77 | 3 (0–10) | 22.4 | 0.72 | 0 (0–0) | 100 | NA |
| Enjoyment of lifeb | 1 (0–9) | 44.1 | 0.57 | 1 (0–9) | 34.7 | 0.53 | 0 (0–0) | 100 | NA |
| Ability to riseb | 2 (0–9) | 28.3 | 0.68 | 3 (0–9) | 16.3 | 0.60 | 0 (0–0) | 100 | NA |
| Ability to walkb | 1.5 (0–8) | 31.7 | 0.84 | 2 (0–8) | 20.4 | 0.82 | 0 (0–0) | 100 | NA |
| Ability to runb | 2 (0–10) | 31.7 | 0.81 | 2 (0–10) | 20.4 | 0.78 | 0 (0–0) | 100 | NA |
| Ability to climb2 | 1 (0–10) | 43.3 | 0.67 | 2 (0–10) | 32.7 | 0.62 | 0 (0–0) | 100 | NA |
| PS sum | 7.5 (0–23) | 25.9 | NA | 10 (0–23) | 12.2 | NA | 0 (0–1) | 95.2 | NA |
| PI sum | 12.5 (0–46) | 15.5 | NA | 14 (2–46) | 0 | NA | 0 (0–0) | 100 | NA |
| CBPI total sum | 19.5 (0–66) | 15.5 | NA | 24 (2–66) | 0 | NA | 0 (0–1) | 95.2 | NA |
Values are presented as median (minimum–maximum). Proportion (%) of scoring minimum value (floor) value. Communalities showing proportions of variance for each item that can be explained by the two components, pain severity and pain interference with function, in the exploratory factor analysis by principal component analysis
CBPI canine brief pain inventory, OA osteoarthritis, PS pain severity (item 1–4), PI pain interference with function (item 5–10), NA not applicable
aRange 0–10 (no pain, extreme pain)
bRange 0–10 (does not interfere, interferes completely)
c% Scoring minimum value