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

Figure 8. The relation between WPI and four symptom scales on the x-axis in NDB patients.

Figure 8

The red horizontal line occurs at a WPI of 7, the level where high WPI scores begin [56].

WPI: widespread pain index; NDB: National Data Bank for Rheumatic Diseases; NRD: patients with non-inflammatory disorders; RA: rheumatoid arthritis patients; NDB all: count of all somatic symptoms; NDB non-pain, non-FM: all symptoms that are not related to pain or fibromyalgia variables; NDB non-pain: symptoms not related to pain; SSS8: short symptom scale-8 [57]; PHQ-15: Patient Health Questionnaire-15 scale