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. 2021 Nov 29;13(11):e20010. doi: 10.7759/cureus.20010

Figure 2. WPI and SSS scores in 3,276 US primary care patients.

Figure 2

The horizontal line at SSS of 5 and the vertical line at WPI of 7 represent fibromyalgia diagnostic-level requirements. Red dots are fibromyalgia criteria-positive cases, as diagnosed by physicians. In the right upper quadrant, red dot cases satisfied the criteria. In the left upper quadrant, red dots cases did not satisfy the fibromyalgia criteria. Blue dots are fibromyalgia-positive cases that satisfy the criteria but were not diagnosed by physicians. Tan dots are fibromyalgia criteria and physician-negative cases with high WPI but low SSS. Yellow dots are fibromyalgia criteria and physician-negative cases with high SSS and low WPI. White dots are fibromyalgia criteria and physician-negative cases with low SSS and low WPI. Only cases in the right upper quadrant satisfy fibromyalgia 2016 criteria. The dashed diagonal line represents the line where the PSD score is 12 [2].

WPI: widespread pain index; SSS: symptom severity scale; PSD: polysymptomatic distress; FM: fibromyalgia