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Table 2 Minimum and maximum score for EARS-Br items, mean score values, intraclass correlation coefficient (ICC), standard error of measurement (SEM) and minimally detectable change (MDC) of each question and total score of domains of the Brazilian Portuguese version of the Exercise Adherence Rating Scale (EARS-Br) (n = 108)

From: The Brazilian Portuguese version of the Exercise Adherence Rating Scale (EARS-Br) showed acceptable reliability, validity and responsiveness in chronic low back pain

Items

ICC (95% CI)

n = 83

SEM/ MDC

n = 108

Mean Value EARS-Br (SD)

Minimum-maximum Value EARS-Br

1. I do my exercises as often as recommended

0.87 (0.80–0.92)

0.45/ 1.25

3.13 (SD = 1.25)

0–4

2. I forget to do my exercises

0.80 (0.69–0.87)

0.60/ 1.66

2.54 (SD = 1.34)

0–4

3. I do less exercise than recommended by my healthcare professional

0.92 (0.88–0.95)

0.47/ 1.30

2.83 (SD = 1.56)

0–4

4. I fit my exercises into my regular routine

0.86 (0.78–0.91)

0.49/ 1.36

3.42 (SD = 1.26)

0–4

5. I don’t get around to doing my exercises

0.91 (0.87–0.94)

0.41/ 1.13

3.25 (SD = 1.44)

0–4

6. I do most, or all, of my exercises

0.89 (0.83–0.93)

0.43/ 1.20

3.58 (SD = 1.30)

0–4

Total score

0.91 (0.86–0.94)

1.97/5.45

18.75 (SD = 6.56)

0–24

  1. n = sample size; CI = confidence interval 95%; SD = Standard Deviation
  2. SEM = SD√1 − ICC
  3. MDC95 = 1·96 × SEM × √2