Numbers of subjects in the fibromyalgia* (FM) and non-fibromyalgia* (non-FM) groups who met and did not meet the 2010 Modified American College of Rheumatology criteria** for FM, respectively.
Met the Criteria
FM Group, n = 174
Non-FM Group, n = 277
Yes
157
29
No
17
248
↵* Determined by the rheumatologist’s clinical assessment as the gold standard.
↵** Widespread Pain Index is ≥ 7 and Symptom Severity Score is ≥ 5, or Widespread Pain Index is 3–6 and Symptom Severity Score is ≥ 9.