Assessing usability of the 'Adherence Starts with Knowledge 20' (ASK-20) questionnaire for Japanese adults with bronchial asthma receiving inhaled corticosteroids long term

Autor: Ryo Atsuta, Yasuo To, Susumu Sakamoto, Isao Mukai, Akihiro Kobayashi, Arisa Kinoshita, Kazuhisa Takahashi
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Allergology International, Vol 66, Iss 3, Pp 411-417 (2017)
Druh dokumentu: article
ISSN: 1323-8930
37556878
DOI: 10.1016/j.alit.2016.09.001
Popis: Background: Maintaining high treatment adherence levels is critical for effective management of chronic diseases. The Adherence Starts with Knowledge 20 (ASK-20) questionnaire is the only linguistically validated patient-reported treatment adherence tool available in Japan. We conducted additional analyses on ASK-20 data from Japanese adults with asthma. Methods: This was a prospective, non-interventional, single-visit, multi-centre study in Japanese adults (n = 300) with asthma receiving long-term treatment with inhaled corticosteroids (ICS) or ICS/long-acting beta-agonists. We tested the reliability, validity and the relationship between different adherence conditions and ASK-20 score. At one centre, ICS adherence prescription rate was calculated retrospectively based on 2-year percentage ICS adherence data contained within medical records. Results: The ASK-20 had good internal consistency reliability (Cronbach's alpha = 0.76; n = 290). Discriminant validity was demonstrated with significant correlations between the percentage ICS adherence rates and both the mean ASK-20 total score and mean total barrier count (TBC) (r = −0.51 and −0.58, p
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