Purpose of the Questionnaire

The main purpose of this research tool is to assess the current health status of individuals with fibromyalgia syndrome in both clinical and research settings.

Questionnaire Analysis

The FIQ-10 was developed in 1991 by Burckhardt and colleagues in Portland, Oregon, USA. The questionnaire consists of 10 questions referring to the past seven days and evaluates areas such as functionality, the impact of the syndrome on daily life, and general symptomatology.

Scoring of Questions

The first question includes 11 sub-items that refer to the individual’s ability to perform daily activities involving major muscle groups, each rated on a 4-point Likert scale (0 = always, 3 = never). Questions 2 and 3 refer to the number of days the person felt well and the number of days they were unable to work or perform household tasks due to symptoms. The remaining questions (4-10) use 100mm visual analog scales to assess aspects such as difficulty with work, pain, fatigue, morning tiredness, stiffness, anxiety, and depression.

Statistical Analysis

The higher the final score, the greater the negative impact of fibromyalgia symptoms on the individual’s life (maximum total score: 100).

Validity of the Questionnaire

The construct validity of the FIQ-10 was assessed by measuring the correlation between its components and has been proven to be a valid research tool.

Reliability of the Questionnaire

Test-retest reliability and internal consistency were good, with values of 0.81 and 0.72 respectively.

References

Burckhardt, C.S., Clark, S.R., Bennett, R.M. (1991): The fibromyalgia impact questionnaire (FIQ): development and validation. J Rheumatol. 18:728-733.
Bennett, R. M. (2005). The Fibromyalgia Impact Questionnaire (FIQ): a review of its development, current version, operating characteristics and uses. Clin Exp Rheumatol. 23(5 Suppl 39):154-62.
Paolucci, T., Baldari, C., Di Franco, M., Didona, D., Reis, V., Vetrano, M., Guidetti, L. (2016). A New Rehabilitation Tool in Fibromyalgia: The Effects of Perceptive Rehabilitation on Pain and Function in a Clinical Randomized Controlled Trial. Evidence-Based Complementary and Alternative Medicine, 2016. Available at https://doi.org/10.1155/2016/7574589.