Fig. 4
From: Circulating levels of GDF15 in patients with myalgic encephalomyelitis/chronic fatigue syndrome
Linear regression charts between levels of GDF15 and severity of symptoms reported by study participants with ME/CFS at baseline time-point. The charts illustrate the regression lines between levels of circulating GDF15 (y-axis) and reported symptoms (x-axis) among the ME/CFS patient cohort only, including participants in the mild and severe disease categories. Symptoms were measured by distinct validated instruments, at the time of blood collection (baseline time-point) and 95% Confidence Intervals. The statistical significance of the tested correlations between levels of GDF15 and measured symptoms are also presented in the charts (P values)