Session Type: Abstract Submissions (ACR)
Background/Purpose: The Fibromyalgia Rapid Screening Tool (FiRST) is a brief, simple and straightforward self-administered questionnaire with excellent discriminative value, of potential value for the detection of fibromyalgia in patients with diffuse chronic pain. To evaluate the usefulness of a Spanish version of the FiRST questionnaire for the detection of fibromyalgia (FM ) in primary health care centers.
Methods: The Spanish translation of the original FiRST French questionnaire was carried out by Rheumatologists and Professors of French and Spanish Language. Translation was performed in second person, to enable self or hetero application (see annex). This study is prospective and multicenter, including 404 consecutive patients diagnosed with FM according to the 1990 ACR modified criteria and 2010 ACR criteria. FM was diagnosed by specialists in Rheumatology. We also included a control group of similar age and sex, consisting of 147 Rheumatoid Arthritis (RA) patients and 219 Osteoarthritis (OA) patients. The modified 2010 ACR criteria was applied, the number of tender points was evaluated, and the FiRST questionnaire and Fibromyalgia Impact Questionnaire (FIQ) were completed. Sensitivity, specificity and predictive value were analysed for each of the 6 items of the FiRST questionnaire and for the global score (5 or 6 positive items), as well as the correlation between the global score and other parameters. The results obtained were expressed as median and interquartile range and were analyzed with the Mann –Whitney U test using SPSS 15. P values less than 0.05 were considered significant.
Results: The mean age of patients with FM was 51.67 years. The mean FIQ score was 73.29. The median disease evolution was 12 years (IC: 6-21 ). Median tender points was 16 (IC: 14-18). 356 of 404 FM patients who met the 1990 ACR criteria and the 2010 modified criteria had a positive FiRST (scores 5 or 6). In the control group (AR + OA), 16 subjects had a positive FiRST and 343 a negative FiRST (scores or 4 or less). The sensitivity value for global score (5-6 positive ítems) with 95% interquartile range was 92 (88.9-95.1), the specificity 87.4 (80.8-94), positive predictive value 95.7 (93.3-98.1), and negative predictive value 78.2 (70.6-85.9). There was a significant correlation between total FiRST (scores 5 or 6) and Widespread Pain Index (p < 0.0001), Symptom Severity Scale (p < 0.0001), time to disease progression (p < 0.0001) and FIQ (p < 0.0001).
Conclusion: In patients with FM who met the 1990 ACR criteria and the 2010 modified ACR criteria, the overall sensitivity of the Spanish translation of the FiRST was slightly higher than in the original study. This questionnaire is easy to use and useful for the detection of FM patients in primary health care centers.
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ACR Meeting Abstracts - https://acrabstracts.org/abstract/analysis-of-the-fibromyalgia-rapid-screening-tool-spanish-version-to-detect-fibromyalgia-in-primary-health-care-centers/