Can the Fatigue Severity Scale 7-item version be used across different patient populations as a generic fatigue measure - a comparative study using a Rasch model approach.
Johansson S, Kottorp A, Lee KA, Gay CL, Lerdal A
Health Qual Life Outcomes. 2014; 12(1):24. Epub 2014 Feb 22. PMID: 24559076.Abstract