Figure 3

Frequencies of patients per category at baseline and week 12. Definition of categories, based on the classification rules from Figure 2: Category 1: BPIPIF ≥7.14; Category 2: 3.29 ≤ BPIPIF <7.14 AND FIQ20 < 5; Category 3: 3.29 ≤ BPIPIF <7.14 AND FIQ20 ≥ 5; Category 4: BPIPIF <3.29 AND FIQ14 ≥ 2, Category 5: BPIPIF <3.29 AND FIQ14 < 2. BPIPIF = BPI pain interference overall scores; FIQ = Fibromyalgia Impact Questionnaire; LOCF = last observation carried forward; N = Number of evaluable patients with outcome data at baseline and endpoint (Week 2–12, LOCF).