Table 5

Comparison of Fibromyalgia Impact Questionnaire and Revised Fibromyalgia Impact Questionnaire weighting on actual and achieved domain scores

FIQ

FIQR

Change



Given weight

Achieved weight

Given weight

Achieved weight


Function

10%

4.30 (7%)

30%

15.61 (28%)

+11.31

Overall impact

20%

11.42 (19%)

20%

10.97 (19%)

-0.45

Symptoms

70%

44.85 (74%)

50%

30.00 (53%)

-14.85

Total

60.57 (100%)

56.58 (100%)

-3.99


This analysis shows that the weighting of the Revised Fibromyalgia Impact Questionnaire (FIQR) closely approximates the given weight. The 'imbalance' observed in the Fibromyalgia Impact Questionnaire (FIQ) between function and symptom (7% and 74%) has been markedly improved in the FIQR (28% and 53%).

Bennett et al. Arthritis Research & Therapy 2009 11:R120   doi:10.1186/ar2783

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