Chalder Fatigue Scale (CFQ-11)
Chalder Fatigue Scale (CFQ-11; Chalder 1993): 11-item self-report of physical (items 1-7) and mental (items 8-11) fatigue, each rated 0-3.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Item 1 - tiredness
- 3
- Item 2 - need to rest
- 2
- Item 3 - sleepy or drowsy
- 2
- Item 4 - difficulty starting things
- 2
- Item 5 - lacking energy
- 1
- Item 6 - less strength
- 1
- Item 7 - feeling weak
- 1
- Item 8 - difficulty concentrating
- 2
- Item 9 - slips of the tongue
- 1
- Item 10 - finding the right word
- 1
- Item 11 - memory
- 1
Result: CFQ-11 bimodal 5 of 11 (Likert 17 of 33) — fatigue caseness (bimodal >= 4 is a case).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Bands
- higher = more fatigue; a bimodal total of 4 or more indicates fatigue caseness.
What you enter
- Item 1 - tiredness (0-3)
- Item 2 - need to rest (0-3)
- Item 3 - sleepy or drowsy (0-3)
- Item 4 - difficulty starting things (0-3)
- Item 5 - lacking energy (0-3)
- Item 6 - less strength (0-3)
- Item 7 - feeling weak (0-3)
- Item 8 - difficulty concentrating (0-3)
- Item 9 - slips of the tongue (0-3)
- Item 10 - finding the right word (0-3)
- Item 11 - memory (0-3)
How this is calculated
- Items
- eleven items (physical 1-7, mental 8-11) each rated 0-3; Likert total 0-33, bimodal total 0-11.
Chalder T, Berelowitz G, Pawlikowska T, et al. Development of a fatigue scale. J Psychosom Res. 1993;37(2):147-153. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.