TY  - SER
TI  - The internet intervention Patient Adherence Scale (iiPAS): Development and psychometric evaluation in a clinical sample of children and adolescents
SN  - 1439-4456
N1  - PDF en biblioteca; Bibliografía: p.18-20
N2  - Background: Patient adherence is defined as the extent to which a patient complies with medical or health advice. Previous
results from the psychotherapy field indicate that there are clinically relevant associations between patient adherence and
treatment outcomes. However, measures of adherence have not been adapted to modern, internet-delivered formats of
psychological interventions.
Objective: The objective of this study was to develop and psychometrically evaluate a novel measure, the internet intervention
Patient Adherence Scale (iiPAS).
Methods: In collaboration with experienced clinicians and researchers in the field, a five item clinician-rated internet
intervention Parent Adherence Scale (iiPAS) was developed. The initial scale was tested in a sample of children and adolescents
(N=50) participating in internet-delivered cognitive behavior therapy (ICBT). A revised version of the iiPAS was then
administered to a larger sample of children and adolescents (N=148) with various mental health conditions receiving ICBT. The
scale was evaluated according to a classical test theory framework.
Results: The iiPAS demonstrated overall excellent internal consistency. Factor analyses revealed one underlying factor,
explaining about 80% of the variance. The iiPAS was associated with objective measures of patient activity in ICBT (number of
logins, number of written characters, completed modules). Furthermore, the iiPAS demonstrated a significant association with
treatment outcome.
Conclusions: This evaluation demonstrated sound psychometric characteristics of the iiPAS in a clinical sample of children and
adolescents receiving ICBT. The iiPAS could be a useful measurement tool to capture adherence to to a broad range of internetdelivered behavioural interventions
ER  -