Prolonged fatigue in Ukraine and the United States: Prevalence and risk factors.
Fred FriedbergNathan TintleJake ClarkEvelyn J BrometPublished in: Fatigue : biomedicine, health & behavior (2014)
The lifetime prevalence of prolonged fatigue in Ukraine was 40% higher than that found in U.S. data. In addition, fatigue prevalence increased sharply with age in Ukraine perhaps due to limited social and medical resources and greater comorbidity.