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Table 3 Item Means and SD, Intraclass Correlations (ICC) with 95% Confidence Interval (CI), Item-total correlations, Cronbach's α if item deleted for Spanish version of CPAQ (N = 205)

From: Veaselaircdhation of the Spanish version of the Chronic Pain Acceptance Questionnaire (CPAQ) for the assessment of acceptance in fibromyalgia

Item no.

Mean

SD

ICC

(95% CI)

Item-total correlation

Cronbach's α if item deleted

1

2.4

1.9

0.83 (0.73-0.90)

0.592

0.81

2

2.1

1.7

0.88 (0.80-0.92)

0.583

0.81

3

1.7

1.8

0.72 (0.55-0.83)

0.480

0.82

4

1.9

1.8

0.56 (0.27-0.73)

0.367

0.82

5

1.9

1.9

0.54 (0.25-0.72)

0.415

0.82

6

2.1

1.8

0.82 (0.72-0.89)

0.566

0.81

7

2.5

2.0

0.61 (0.36-0.76)

0.164

0.83

8

2.2

1.8

0.75 (0.60-0.85)

0.488

0.81

9

1.7

1.7

0.85 (0.76-0.91)

0.554

0.81

10

2.1

1.9

0.64 (0.41-0.78)

0.495

0.81

11

2.5

2.1

0.81 (0.69-0.88)

0.241

0.83

12

2.4

1.9

0.65 (0.42-0.79)

0.395

0.82

13

2.1

2.0

0.47 (0.12-0.67)

0.197

0.83

14

2.1

1.9

0.52 (0.22-0.71)

0.312

0.82

15

1.9

1.8

0.80 (0.67-0.88)

0.531

0.81

16

2.3

2.0

0.65 (0.42-0.78)

0.126

0.83

17

1.7

1.8

0.60 (0.34-0.75)

0.401

0.82

18

1.6

1.9

0.59 (0.32-0.75)

0.378

0.82

19

2.0

1.9

0.69 (0.49-0.81)

0.509

0.81

20

1.3

1.7

0.32 (0.12-0.59)

0.339

0.82

  1. Overall ICC was 0.83 (95% confidence interval: 0.79-0.86)
  2. Cronbach's α of the total score was 0.83