Lale Altan1, Reyhan Çeliker2, İlker Ercan3, Murat Birtane4, Kenan Akgün5, Coşkun Zateri6, Nurettin Taştekin4, Aylin Rezvani7, İlknur Aktaş8, Şenay Özdolap9, Erbil Dursun10, Nigar Dursun10, Selda Sarıkaya9. 1. Department of Physical Medicine and Rehabilitation, Uludag University School of Medicine, Bursa, Turkey. 2. Department of Physical Medicine and Rehabilitation, Acibadem University, School of Medicine, İstanbul, Turkey. 3. Department of Biostatistics, Uludag University School of Medicine, Bursa, Turkey. 4. Department of Physical Medicine and Rehabilitation, Trakya University School of Medicine, Edirne, Turkey. 5. Department of Physical Medicine and Rehabilitation, Istanbul University Cerrahpaşa School of Medicine, İstanbul, Turkey. 6. Department of Physical Medicine and Rehabilitation, Onsekiz Mart University School of Medicine, Çanakkale, Turkey. 7. Department of Physical Medicine and Rehabilitation, Bezmialem University School of Medicine, İstanbul, Turkey. 8. Department of Physical Medicine and Rehabilitation, Fatih Sultan Mehmet Training and Research Hospital, İstanbul, Turkey. 9. Department of Physical Medicine and Rehabilitation, Bülent Ecevit University School of Medicine, Zonguldak, Turkey. 10. Department of Physical Medicine and Rehabilitation, Kocaeli University School of Medicine, Kocaeli, Turkey.
Abstract
OBJECTIVE: The objective of this study was to test the reliability and validity of the Turkish version of the Fibromyalgia Participation Questionnaire (FPQ). METHODS: One hundred and eighty-four female patients with fibromyalgia syndrome were included in the study. All patients filled out the Turkish FPQ (FPQ-T) questionnaire, which was obtained by translation from German according to the guideline for the process of cross-cultural adaptation The patients filled out the revised Fibromyalgia Impact Questionnaire (FIQ) and reevaluated the FPQ-T two hours later. Internal consistency reliability of the FPQ-T was assessed by calculating the "if item deleted" using Cronbach's alpha and the "item-total correction" coefficient for each item of the questionnaire. The consistency of the subscales and the correlation of the test-retest values were assessed. The test-retest values were compared using the Wilcoxon test. Criterion validity was measured using FIQ scales by Spearman's rank correlation coefficient. RESULTS: For internal reliability, Cronbach's alpha coefficient was calculated as 0.957 for nonworking patients and 0.958 for working patients. Cronbach's alpha values of 0.939, 0.871, and 0.914 were obtained for daily, social, and work life, respectively. Correlation coefficients were 0.888 for daily life, 0.859 for social life, and 0.901 overall in the nonworking group versus 0.896 the in working group. The comparison of scores obtained from test-retest measurements showed no significant difference except for Item 3. The correlation of the symptom severity score (SSS) and the FPQ-T was r=0.385 (p<0.001) and r=0.390 (p<0.001) for the nonworking and working subgroups, respectively. The evaluation of construct validity showed a significant correlation between the SSS and FPQ-T. CONCLUSION: The results of our study showed that the FPQ-T is reliable and valid for assessing participation and social functioning in fibromyalgia patients in Turkish society.
OBJECTIVE: The objective of this study was to test the reliability and validity of the Turkish version of the Fibromyalgia Participation Questionnaire (FPQ). METHODS: One hundred and eighty-four female patients with fibromyalgia syndrome were included in the study. All patients filled out the Turkish FPQ (FPQ-T) questionnaire, which was obtained by translation from German according to the guideline for the process of cross-cultural adaptation The patients filled out the revised Fibromyalgia Impact Questionnaire (FIQ) and reevaluated the FPQ-T two hours later. Internal consistency reliability of the FPQ-T was assessed by calculating the "if item deleted" using Cronbach's alpha and the "item-total correction" coefficient for each item of the questionnaire. The consistency of the subscales and the correlation of the test-retest values were assessed. The test-retest values were compared using the Wilcoxon test. Criterion validity was measured using FIQ scales by Spearman's rank correlation coefficient. RESULTS: For internal reliability, Cronbach's alpha coefficient was calculated as 0.957 for nonworking patients and 0.958 for working patients. Cronbach's alpha values of 0.939, 0.871, and 0.914 were obtained for daily, social, and work life, respectively. Correlation coefficients were 0.888 for daily life, 0.859 for social life, and 0.901 overall in the nonworking group versus 0.896 the in working group. The comparison of scores obtained from test-retest measurements showed no significant difference except for Item 3. The correlation of the symptom severity score (SSS) and the FPQ-T was r=0.385 (p<0.001) and r=0.390 (p<0.001) for the nonworking and working subgroups, respectively. The evaluation of construct validity showed a significant correlation between the SSS and FPQ-T. CONCLUSION: The results of our study showed that the FPQ-T is reliable and valid for assessing participation and social functioning in fibromyalgia patients in Turkish society.
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