Measurement properties of the Fear-Avoidance Belief Questionnaire for physical activity in patients with shoulder impingement syndrome

Figures & data

Table 1 Patient characteristics at baseline (n=45)

	Valuea
Sex (male)	27 (60.0)
Age (years), mean ± SD	48.1±15.0
BMI, mean ± SD	27.1±5.5
Pain duration
<7 months	11 (24.4)
7–12 months	14 (31.1)
13–24 months	6 (13.3)
>24 months	14 (31.1)
Employment
Currently employed	28 (62.2)
Unemployed	5 (11.1)
Student/training	3 (6.7)
Retired	9 (20.0)
On sick leave	8 (17.8)
Baseline score, mean ± SD
FABQ-PA (0–24), n=44	12.8±6.5
OSS (0–48), n=45	32.1±8.2

Note:

a Values are n (%) unless otherwise indicated.

Abbreviations: BMI, body-mass index; FABQ-PA, Fear-Avoidance Belief Questionnaire for physical activity; OSS, Oxford Shoulder Score.

Figure 1 Bland–Altman plot.

Notes: Intraindividual differences between the Fear-Avoidance Belief Questionnaire for physical activity (FABQ-PA) scores on test and retest plotted against the average of scores. The center line represents the mean difference with 95% CI (dashed lines), and the solid flanking lines represent the 95% limits of agreement.

Figure 2 (A) Correlation between FABQ-PA scale and OSS at baseline; (B) correlation between change scores from baseline to 3 months for the FABQ-PA and OSS.

Abbreviations: Fear-Avoidance Belief Questionnaire for physical activity; OSS, Oxford Shoulder Score.