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Table 4 Measures of agreement, systematic disagreement (bias) and individual variability in pain-related problems with function between patient’s assessments on the validated Functional Barometer, FB(2.0) and the observer’s ICF-classifications

From: The functional barometer –a self-report questionnaire in accordance with the international classification of functioning, disability and health for pain related problems; validity and patient-observer comparisons

The FB(2.0) items of function and corresponding ICF codes n PA (%) RP (95% CI) RV (95% CI) D
Do you have problem because of your pain with….
Dressing 41 32% -0.19 0.32 0.20
(ICF d 540) (-0.39 to 0.02) (0.09 to 0.55)
Joint mobility 41 29% -0.16 0.36 0.21
(ICF b 710) (-0.38 to 0.05) (0.07 to 0.64)
Muscle strength 39 18% -0.29 0.35 0.20
(ICF b 730) (-0.51 to -0.07) (0.07 to 0.63)
Endurance 39 23% -0.17 0.38 0.23
(ICF b 740) (-0.41 to 0.06) (0.12 to 0.64)
Walking 40 33% -0.31 0.20 0.14
(ICF d 450) (-0.49 to -0.13) (0.002 to 0.40)
Walking in stairs 41 51% -0.11 0.29 0.19
(ICF d 4551) (-0.29 to 0.07) (0.07 to 0.52)
Keeping posture 41 22% -0.60 0.15 0.13
(ICF d 4153) (-0.75 to -0.45) (0.02 to 0.27)
Making the bed 40 30% 0.01 0.27 0.19
(ICF d 649) (-0.19 to 0.22) (0.08 to 0.47)
Ordinary housework 41 29% -0.27 0.09 0.11
(ICF d 640) (-0.43 to -0.11) (0.02 to 0.17)
Lifting/carrying things 39 28% -0.30 0.40 0.24
(ICF d 430) (-0.53 to -0.07) (0.13 to 0.68)
Driving a car 39 33% -0.06 0.33 0.22
(ICF d 4751) (-0.28 to 0.15) (0.09 to 0.57)
Using transportation 41 29% -0.46 0.31 0.21
(ICF d 470) (-0.65 to -0.27) (0.11 to 0.52)
  1. The measures of percentage agreement (PA), the systematic disagreement in position (RP), individual variability (RV), disorder (D), and corresponding 95% confidence intervals (95% CI).