Short Form of the COM-B Physical Activity Questionnaire
Short Form of the COM-B Physical Activity Questionnaire
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About the questionnaire
About the questionnaire
The COM-B PAQ Short Form is a 15-item version designed for rapid behavioural screening. It includes:
Capability, Opportunity and Motivation
Each item reflects one TDF domain, ensuring theoretical coverage while reducing length.
Why was it developed?
Why was it developed?
The short form was developed to:
Improve feasibility in time-limited settings
Reduce respondent burden
Support large-scale data collection
Enable routine monitoring in practice environments
It balances theoretical integrity with real-world usability.
Validity and Reliability
Validity and Reliability
The short form maintains strong psychometric properties and demonstrates:
Good internal reliability
Acceptable validity
Clear discrimination between activity levels
The full multi-phase development and psychometric validation study can be accessed via the References page.
Completing the questionnaire
Completing the questionnaire
15 items
3 sections
5-point Likert scale
Completion time: approximately 3–5 minutes
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