TY - JOUR
T1 - Not throwing out the baby with the bathwater: lessons from the Fibromyalgia Impact Questionnaire
AU - van Wilgen, C.P.
AU - Vuijk, P.J.
AU - van Ittersum, M.W.
AU - Nijs, J.
PY - 2013
Y1 - 2013
N2 - The Fibromyalgia Impact Questionnaire (FIQ) is the most frequently used questionnaire in patients with fibromyalgia in the last 20 years. Recently, a revised version of the FIQ has been published. In this study, we examined the factor structure of the original version using explorative and confirmative factor analyses in a representative group of about 500 Dutch and Belgian patients with fibromyalgia, in which the work-related item was excluded. The FIQ consisting of a three-factor structure with a functional domain (ten items), physical symptom domain (six items), and mental symptom domain (two items), which is the most accurate. From the data presented, it is concluded that the FIQ is a solid, worldwide-used questionnaire with a history of 20 years consisting of three domains. When constructing a revised FIQ, the results of this study can be incorporated. © 2012 Clinical Rheumatology.
AB - The Fibromyalgia Impact Questionnaire (FIQ) is the most frequently used questionnaire in patients with fibromyalgia in the last 20 years. Recently, a revised version of the FIQ has been published. In this study, we examined the factor structure of the original version using explorative and confirmative factor analyses in a representative group of about 500 Dutch and Belgian patients with fibromyalgia, in which the work-related item was excluded. The FIQ consisting of a three-factor structure with a functional domain (ten items), physical symptom domain (six items), and mental symptom domain (two items), which is the most accurate. From the data presented, it is concluded that the FIQ is a solid, worldwide-used questionnaire with a history of 20 years consisting of three domains. When constructing a revised FIQ, the results of this study can be incorporated. © 2012 Clinical Rheumatology.
U2 - 10.1007/s10067-012-2120-3
DO - 10.1007/s10067-012-2120-3
M3 - Article
SN - 0770-3198
VL - 32
SP - 333
EP - 339
JO - Clinical Rheumatology
JF - Clinical Rheumatology
IS - 3
ER -