PROMIS Fatigue Short Form 8a
Psychology: Health & SleepReliability: alpha 0.953 sample items
About this scale
An 8-item NIH-developed measure of fatigue intensity and impact. IRT-calibrated.
Sample item(s)
“How fatigued were you on average?”
“To what degree did your fatigue interfere with your physical functioning?”
“To what degree did your fatigue interfere with your enjoyment of life?”
Reliability
Reported internal consistency: alpha 0.95. As a rule of thumb, Cronbach’s α ≥ .70 is considered acceptable, ≥ .80 good, and ≥ .90 excellent for established measures.
Notes
Free for academic use.
Source & citation
Cella, D., Lai, J. S., Jensen, S. E., Christodoulou, C., Junghaenel, D. U., Reeve, B. B., & Stone, A. A. (2016): PROMIS Fatigue item bank had clinical validity across diverse chronic conditions. Journal of Clinical Epidemiology, Vol. 73, pp. 128–134.
Source. Scale details are summarised from the publication cited above. Always consult the original source for the full item set, scoring, and permission to use.
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