Figure 1
From: Toward characterization and definition of fibromyalgia severity
Relationship between self-reported fibromyalgia severity and current pain (A) and pain-related sleep interference (B). Values represent mean scores (± standard deviation as shown by the vertical bars) from the short form of the modified Brief Pain Inventory. P values are for the overall association between fibromyalgia severity and levels of current pain and pain-related sleep interference using ANOVA.