ASQOL and ASAIMS2 International adaptation

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ASQOL and AS-AIMS2International adaptation
ASAS

• ASAS working group
• Washington, january 2004

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Rationale

• Cultural adaptation to reach equivalence in
  content
• gt concept measured
• Validation to document equivalence in metric
  properties
• gt measurement tool

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Adaptation guidelines

• 14 sets of guidelines published (Konway)
• Adaptation all set variations around
• more than one translation
• forward t number and qualification
• backward t controversial relevance
• involvement of patients, experts, lay people
• jointly with developers

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Adaptation guidelines

• Validation all agree on validation
• standard methodology (construct internal,
  external validity and reliability)
• to check it is as valid as the original
• some add confirmatory analysis
• to fit the original model dimensionality
• recent development with Rasch analysis and
  differential item functioning
• to check for equivalence in scaling

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Current state of science

• Only one article comparing single translation
  with process of adaptation (Falcao, J Rheum2003)
• No data to provide evidence about the respective
  contribution of each set of guidelines

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AS-AIMS2

• AIMS21 57 items in 12 dimensions
• Adapted and validated in several languages
• F, NL, UK, G, Sp, I, Gr, No, Br, Ru, Sw, Ch, He
• AS-AIMS22 64 items in 13 dimensions
• Available in English and French
• to be adapted for spinal mobility dimension
• to be validated in full 13-dimension form
• 1. Meenan et al. Arthritis Rheum 1992
• 2. Guillemin et al. Arthritis Care Res 1999

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ASQOL

• Original developed in English and Dutch1
• Needs-based model assess the impact of the
  condition on the patients QoL beyond impairment
  and disability, by asking what the patients
  health prevents them from doing and about their
  emotional response to these restrictions
• 1. Doward L et al. Ann Rheum Dis, 2003

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ASQoL

• ASQoL 18 items in 1 dimension
• Jointly developed in UK and NL
• Currently adapted and validated in Hungarian and
  Turkish
• Adapted but not validated in other languages F,
  G, Sp, I, CND (FE), USA (EH)
• to be fully validated

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Current status of progress

• ASQoL from the ISSAS study
• adapted in French
• validation data collected
• adapted in German
• other languages pending Fi, I,
  Sp(m),Po(B),CND(E),Ch,Tw
• AS-AIMS2 none adapted yet

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ASAS guidelines for cc-adaptation1,2
1. Guillemin F, J Clin Epi 1993 2. Beaton D,
Spine 2000
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Galen Research method for adaptation
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Differences between methods
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• One method proposed for AS-AIMS2
• ASAS guidelines
• Two methods proposed for ASQoL
• GR and ASAS

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Study objective

• To compare 2 sets of guidelines for
  cross-cultural adaptation of the ASQoL
• standard vs model-specific method
• difference in resources involved (cost)
• usefulness of back-translation
• involvement of patients in scale buiding
• number of patients involved in face validity
  appraisal
• involvement of lay people in scale building

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Study design
GR Translation
ASAS Translation
Field test
Probe technique
Assessors AS patients, lay people - preference
for GR ans ASAS versions - produce combined
GR-ASAS version
GR Version
GR-ASAS Version
ASAS Version
Validity
Validity
Validity
Experts compare metric and scaling
Final Version
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Project participation

• AS-AIMS2
• adaptation open, validated open
• ASQoL
• adaptation restricted, validation open
• Comparison of methods
• Adaptation validation Belgium French, Belgium
  Flemish, Russian (pending French, German)