The Mental Disability Military Assessment Tool: A Reliable Tool for Determining Disability in Veterans with Post-traumatic Stress Disorder

Andrea S. Fokkens*, Johan W. Groothoff, Jac J. L. van der Klink, Roel Popping, Roy E. Stewart, Lex van de Ven, Sandra Brouwer, Jolanda Tuinstra

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)


Purpose An assessment tool was developed to assess disability in veterans who suffer from post-traumatic stress disorder (PTSD) due to a military mission. The objective of this study was to determine the reliability, intra-rater and inter-rater variation of the Mental Disability Military (MDM) assessment tool. Methods Twenty-four assessment interviews of veterans with an insurance physician were videotaped. Each videotaped interview was assessed by a group of five independent raters on limitations of the veterans using the MDM assessment tool. After 2 months the raters repeated this procedure. Next the intra-rater and inter-rater variation was assessed with an adjusted version of AG09 computing weighted percentage agreement. Results The results of this study showed that both the intra-rater variation and inter-rater variation on the ten subcategories of the MDM assessment tool were small, with an agreement of 84-100 % within raters and 93-100 % between raters. Conclusions The MDM assessment tool proves to be a reliable instrument to measure PTSD limitations in functioning in Dutch military veterans who apply for disability compensation. Further research is needed to assess the validity of this instrument.

Original languageEnglish
Pages (from-to)569-576
Number of pages8
JournalJournal of Occupational Rehabilitation
Issue number3
Publication statusPublished - Sep-2015


  • Veterans disability claims
  • Reliability
  • Insurance disability
  • Instruments
  • Post-traumatic stress disorder
  • PTSD
  • IRAQ

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