The WHODAS 2.0 is a Patient-Reported-Outcome (PRO) instrument that uses 36 questions to assess the global health status of patients across 6 health domains, independent of disease. They include:
- Cognition – understanding, and communication: 6 questions.
- Mobility – movement and locomotion: 5 questions
- Self-care – personal hygiene, dressing, eating and coping alone: 4 questions
- Social interaction – interacting with other people: 5 questions
- Life activities – domestic duties, leisure, work and studies: 8 questions
- Social participation – community activities, participation in society: 8 questions.
The questionnaire’s domains are based upon the conceptual framework of the WHO’s International Classification of Functioning, Disability and Health (ICF), which has been the international standard to describe and measure health and disability since 2001. All ICF domains are fully covered by WHODAS 2.0, making it unique as a generic, disease-independent PRO instrument.2
The WHODAS is available in 3 different survey forms:
administered and completed by the interviewer
administered and completed by the patient
administered and completed by a third party (e.g. relative, spouse) on behalf of the patient.
It is also available in at least 47 languages.11