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The Internet Intervention Patient Adherence Scale for Guided Internet-Delivered Behavioral Interventions: Development and Psychometric Evaluation.

Artikel i vetenskaplig tidskrift
Författare Fabian Lenhard
Kajsa Mitsell
Maral Jolstedt
Sarah Vigerland
Tove Wahlund
Martina Nord
Johan Bjureberg
Hanna Sahlin
Per Andrén
Karin Melin
Kristina Aspvall
David Mataix-Cols
Eva Serlachius
Jens Högström
Publicerad i Journal of medical Internet research
Volym 21
Nummer/häfte 10
Sidor e13602
ISSN 1438-8871
Publiceringsår 2019
Publicerad vid Institutionen för neurovetenskap och fysiologi
Sidor e13602
Språk en
Länkar dx.doi.org/10.2196/13602
www.ncbi.nlm.nih.gov/entrez/query.f...
Ämneskategorier Barn- och ungdomspsykiatri

Sammanfattning

Patient adherence is defined as the extent to which a patient complies with medical or health advice. At present, there is a lack of reliable and valid measures specifically designed to measure adherence to internet-delivered behavioral interventions.The objective of this study was to develop and psychometrically evaluate a novel measure of adherence to guided internet-delivered behavioral interventions.In collaboration with experienced clinicians and researchers in the field, a 5-item, clinician-rated internet intervention Patient Adherence Scale (iiPAS) was developed. The initial scale was tested in a sample of children and adolescents (N=50) participating in internet-delivered cognitive behavioral therapy (ICBT) studies. A revised version of the iiPAS was then administered to a larger sample of children and adolescents (N=148) with various behavioral problems participating in ICBT trials. The scale was evaluated according to a classical test theory framework.The iiPAS demonstrated excellent internal consistency. Factor analyses revealed one underlying factor, explaining about 80% of the variance, suggesting that the scale captures a homogeneous adherence construct. The iiPAS was strongly associated with objective measures of patient activity in ICBT (number of logins, number of written characters, and completed modules). Furthermore, mid- and posttreatment ratings of the iiPAS were significantly correlated with treatment outcomes. By contrast, objective measures of patient activity in the Web-based platform did not correlate with treatment outcomes.The iiPAS could be a useful tool to measure adherence in a broad range of internet-delivered behavioral interventions.

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