Fig. 3
From: Tobacco use in the Myeloproliferative neoplasms: symptom burden, patient opinions, and care
Symptom Severity and Prevalence by Smoking and MPN subtype. Comparison of mean severity (a) and prevalence (b) for individual MPN-10 items and quality of life between current/formers smokers and never smokers by MPN subtype. Symptom severity was measured on a 0 (absent) to 10 (worst imaginable) scale. Quality of life was measured on a 0 (as good as it can be) to 10 (as bad as it can be) scale. Prevalence was defined as a symptom score greater than or equal to 1. *p-value < 0.05. MPN: Philadelphia-negative chronic myeloproliferative neoplasms; ET: essential thrombocythemia; PV: polycythemia vera; MF: myelofibrosis