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AQoL-6D questionnaire
Algorithms
Population Norms
AQoL-6D Structure
Conceptualisation:
Description:
- 6 separately scored dimensions, with variable item numbers and response levels.
- A simple global ‘utility’ score
- Increased sensitivity in the range of good health
Dimensions:
- Independent Living - household tasks, mobility outside the home, walking and self-care;
- Relationships - friendships, family and community role;
- Mental Health - feelings of despair, worry, sadness, tranquility/agitation;
- Coping - covering having enough energy, being in control and coping with problems;
- Pain - the frequency of pain, the degree of pain and the interference with usual activities caused by pain;
- Senses - seeing, hearing and communication.
Construction
Descriptive System:
- Structural Equation Modelling of the construction item bank completed by a representative sample of 316 members of the public across SEIFA groups and
312 hospital patients.
- Items were collected as for AQoL-4D.
Scaling System:
- TTO and PTO interviews were done with 361 randomly selected members of the public across SEIFA groups to determine utility weights for items, dimensions and AQoL “all worst”
- Multiplicative models to combine items into dimensions
- Multiplicative model to combine dimensions into a ‘stage 1’ single index.
- Econometric analysis to correct stage 1 estimates to produce a stage 2 index.
Timing:
AQoL-6D takes about 2-3 minutes to complete.
Research team:
J Richardson (team leader), N Day, G Hawthorne, S Peacock, A Iezzi
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