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Table 5 Measures of agreement, systematic disagreement (bias) and individual variability in pain-related problems with quality-of-life and pain 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 quality-of-life and corresponding ICF codes n PA (%) Systematic disagreement (bias) Individual variation D
RP (95% CI) RV (95%CI)
Do you have problem because of your pain with….
Sleeping 41 27% -0.47 0.08 0.09
(ICF b 134)    (-0.61 to -0.33) (0 to 0.16)  
Energy 38 34% -0.38 0.25 0.17
(ICF b 130)    (-0.57 to -0.19) (0.03 to 0.48)  
Concentration 41 20% -0.44 0.38 0.24
(ICF b 160)    (-0.64 to -0.24) (0.14 to 0.62)  
Stress. psychological demands 41 32% -0.30 0.30 0.20
(ICF d 240)    (-0.51 to -0.09) (0.08 to 0.52)  
Emotional functions 39 36% -0.32 0.27 0.20
(ICF b 152)    (-0.51 to -0.13) (0.08 to 0.47)  
Gastro-intestinal functions 41 37% -0.25 0.23 0.18
(ICF b 535)    (-0.44 to -0.06) (0.06 to 0.41)  
Leisure time 40 28% -0.65 0.15 0.13
(ICF d 920)    (-0.80 to -0.51) (0.02 to 0.27)  
Family relation 40 25% -0.47 0.27 0.18
(ICF d 760)    (-0.66 to -0.28) (0.06 to 0.47)  
Partner relationship 29 38% -0.38 0.26 0.19
(ICF d 770)    (-0.60 to -0.16) (0.04 to 0.47)  
Contact with friends 40 35% -0.54 0.12 0.11
(ICF d 750)    (-0.70 to -0.39) (0 to 0.25)  
Self-support 40 25% -0.13 0.20 0.16
(ICF d 750)    (-0.32 to 0.06) (0.03 to 0.37)  
Managing pay-work 29 38% -0.25 0.33 0.22
(ICF d 850)    (-0.48 to -0.02) (0.06 to 0.59)  
Perceived pain      
Pain just now 41 44% -0.40 0.14 0.12
(ICF b 280)    (-0.55 to -0.24) (0 to 0.29)  
Pain the last week 41 37% -0.38 0.05 0.06
(ICF b 280)    (-0.51 to -0.24) (0 to 0.09)  
The mildest pain 41 34% -0.28 0.14 0.12
(ICF b 280)    (-0.47 to -0.10) (0.01 to 0.27)  
The worst pain 41 46% 0.00 0.23 0.19
(ICF b 280)    (-0.22 to 0.22) (0.04 to 0.43)  
  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).