Multidimensional Fatigue Inventory-20

Multidimensional Fatigue Inventory-20 or MFI-20® is a 20-item scale was developed in 1995 to measure fatigue severity, and has been extensively used to measure fatigue in cancer and cancer-related illnesses.

The MFI-20 evaluates five dimensions of fatigue:
 * general fatigue
 * physical fatigue
 * reduced motivation
 * reduced activity, and
 * mental fatigue

Copyright and translations
The MFI study form has a registered trademark and copies are available at the Academic Medical Centre, University of Amsterdam, Amsterdam, Netherlands.

Originally developed by a Dutch team, the MFI has since been translated into many different languages.

Wichita Clinical Study
The Multidimensional Fatigue Inventory (MFI) was one of the tests comprising the CDC's Wichita Clinical Study conducted from December 2002 to July 2003 in Wichita, Kansas, USA.

Citation

 * 1995, (Abstract)

Notable studies

 * 2009, Further validation of the Multidimensional Fatigue Inventory in a US adult population sample (Full text)
 * 2012, Multidimensional Fatigue Inventory (MFI) "Reliability and Validity: In an initial psychometric evaluation, develops reported an internal consistency ranging from .53 to .93. The scale was also found to be sensitive to differences between the participants groups."