Classification of FM according to FAST3-P, FAST3-F, and FAST4 compared to 2011 FM criteria and clinical diagnosis (n = 132).
| N = 132 | 2011 FM Criteria | Clinical Diagnosis | ||
|---|---|---|---|---|
| Criteria Positive | Criteria Negative | Criteria Positive | Criteria Negative | |
| FAST3-P–positive FM | 22 (81.5%) | 7 (6.7%) | 16 (57.1%) | 13 (12.5%) |
| FAST3-P–negative FM | 5 (18.5%) | 98 (93.3%) | 12 (42.9%) | 91 (87.5%) |
| Correct: 90.9%, κ 0.73 | Correct: 81.1%, κ 0.44 | |||
| FAST3-F–positive FM | 21 (77.8%) | 8 (7.6%) | 19 (67.9%) | 10 (9.6%) |
| FAST3-F–negative FM | 6 (22.2%) | 97 (92.4%) | 9 (32.1%) | 94 (90.4%) |
| Correct: 89.4%, κ 0.68 | Correct: 85.6%, κ 0.57 | |||
| FAST4–positive FM | 19 (70.4%) | 3 (2.9%) | 14 (50%) | 8 (7.7%) |
| FAST4–negative FM | 8 (29.6%) | 102 (97.1%) | 14 (50%) | 96 (92.3%) |
| Correct: 91.7%, κ 0.72 | Correct: 83.3%, κ 0.51 | |||
FM: fibromyalgia; FAST3-P: Fibromyalgia Assessment Screening Tools cumulative score of pain, self-report painful joint count, and symptom checklist; FAST3-F: FAST cumulative score of fatigue, self-report painful joint count, and symptom checklist; FAST4: FAST cumulative score of pain, fatigue, self-report painful joint count, and symptom checklist.