TY - JOUR
T1 - Enhancing 'meaningfulness' of functional assessments
T2 - UK adaptation of the Amsterdam IADL questionnaire
AU - Stringer, Gemma
AU - Leroi, Iracema
AU - Sikkes, Sietske A.M.
AU - Montaldi, Daniela
AU - Brown, Laura J.E.
PY - 2021/1/1
Y1 - 2021/1/1
N2 - Objective:Commonly used measures of instrumental activities of daily living (IADL) do not capture activities for a technologically advancing society. This study aimed to adapt the proxy/informant-based Amsterdam IADL Questionnaire (A-IADL-Q) for use in the UK and develop a self-report version.Design:An iterative mixed method cross-cultural adaptation of the A-IADL-Q and the development of a self-report version involving a three-step design: (1) interviews and focus groups with lay and professional stakeholders to assess face and content validity; (2) a questionnaire to measure item relevance to older adults in the U.K.; (3) a pilot of the adapted questionnaire in people with cognitive impairment.Setting:Community settings in the UK.Participants:One hundred and forty-eight participants took part across the three steps: (1) 14 dementia professionals; 8 people with subjective cognitive decline (SCD), mild cognitive impairment (MCI), or dementia due to Alzheimer's disease; and 6 relatives of people with MCI or dementia; (2) 92 older adults without cognitive impairment; and (3) 28 people with SCD or MCI.Measurements:The cultural relevance and applicability of the A-IADL-Q scale items were assessed using a 6-point Likert scale. Cognitive and functional performance was measured using a battery of cognitive and functional measures.Results:Iterative modifications to the scale resulted in a 55-item adapted version appropriate for UK use (A-IADL-Q-UK). Pilot data revealed that the new and revised items performed well. Four new items correlated with the weighted average score (Kendall's Tau-.388,-.445,-.497,-.569). An exploratory analysis of convergent validity found correlations in the expected direction with cognitive and functional measures.Conclusion:The A-IADL-Q-UK provides a measurement of functional decline for use in the UK that captures culturally relevant activities. A new self-report version has been developed and is ready for testing. Further evaluation of the A-IADL-Q-UK for construct validity is now needed.
AB - Objective:Commonly used measures of instrumental activities of daily living (IADL) do not capture activities for a technologically advancing society. This study aimed to adapt the proxy/informant-based Amsterdam IADL Questionnaire (A-IADL-Q) for use in the UK and develop a self-report version.Design:An iterative mixed method cross-cultural adaptation of the A-IADL-Q and the development of a self-report version involving a three-step design: (1) interviews and focus groups with lay and professional stakeholders to assess face and content validity; (2) a questionnaire to measure item relevance to older adults in the U.K.; (3) a pilot of the adapted questionnaire in people with cognitive impairment.Setting:Community settings in the UK.Participants:One hundred and forty-eight participants took part across the three steps: (1) 14 dementia professionals; 8 people with subjective cognitive decline (SCD), mild cognitive impairment (MCI), or dementia due to Alzheimer's disease; and 6 relatives of people with MCI or dementia; (2) 92 older adults without cognitive impairment; and (3) 28 people with SCD or MCI.Measurements:The cultural relevance and applicability of the A-IADL-Q scale items were assessed using a 6-point Likert scale. Cognitive and functional performance was measured using a battery of cognitive and functional measures.Results:Iterative modifications to the scale resulted in a 55-item adapted version appropriate for UK use (A-IADL-Q-UK). Pilot data revealed that the new and revised items performed well. Four new items correlated with the weighted average score (Kendall's Tau-.388,-.445,-.497,-.569). An exploratory analysis of convergent validity found correlations in the expected direction with cognitive and functional measures.Conclusion:The A-IADL-Q-UK provides a measurement of functional decline for use in the UK that captures culturally relevant activities. A new self-report version has been developed and is ready for testing. Further evaluation of the A-IADL-Q-UK for construct validity is now needed.
KW - Amsterdam IADL Questionnaire (A-IADL-Q)
KW - Instrumental activities of daily living (IADL)
KW - cross-cultural adaptation
KW - mild cognitive impairment (MCI)
KW - subjective cognitive decline (SCD)
UR - http://www.scopus.com/inward/record.url?scp=85083393322&partnerID=8YFLogxK
U2 - https://doi.org/10.1017/S1041610219001881
DO - https://doi.org/10.1017/S1041610219001881
M3 - Article
C2 - 32290875
SN - 1041-6102
VL - 33
SP - 39
EP - 50
JO - International psychogeriatrics
JF - International psychogeriatrics
IS - 1
ER -