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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

From: Psychometric evaluation of the canine brief pain inventory in a Swedish sample of dogs with pain related to osteoarthritis

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

  1. 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
  2. CBPI canine brief pain inventory, OA osteoarthritis, PS pain severity (item 1–4), PI pain interference with function (item 5–10), NA not applicable
  3. aRange 0–10 (no pain, extreme pain)
  4. bRange 0–10 (does not interfere, interferes completely)
  5. c% Scoring minimum value