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Antipsychotic Medication Adherence Scale (AMAS): Development and preliminary psychometric properties
Published online by Cambridge University Press: 23 March 2020
Abstract
Although being highly consensual that antipsychotic adherence is an important outcome predictor in psychosis, existing reviews have found mean rates of adherence around 40–60%. Several aspects, such as patient-related, medication-related, environmental-related variables have been described as important predictors.
This study aim is to develop, administer and present preliminary psychometric properties of a new scale for antipsychotic medication adherence that includes different types of predictors (clinical, psychosocial, and practical among others).
The “AMAS” was developed by a multidisciplinary team and was based on recent research on factors influencing antipsychotic adherence. The scale evolved from multiple drafts and experts were contacted in order to improve the final version. Over 50 patients with a diagnosis of a psychotic-spectrum disorder taking antipsychotic medication will be assessed with the “AMAS” and the Medication Adherence Rating Scale. Additionally, each patient's psychiatrist will fill in a form with demographic and clinical variables (such as type of symptoms, previous adherence problems, current adherence, insight and other relevant variables).
This is an ongoing study and the sample is still being collected (scheduled finish date: February/2016). Our statistical analysis’ plan includes: reliability analysis (Chronbach's alpha, alpha if item deleted, inter item correlations and covariances and item-total correlations); validity (convergent validity); factorial analysis.
It is hypothesized that the “AMAS” will be a practical, reliable and valid unidimentional instrument with clinical utility assessing adherence to antipsychotics. The “AMAS” can be also useful in assessing intervention targets (e.g. psychoterapeutical, psychoeducational) to enhance adherence.
The authors have not supplied their declaration of competing interest.
- Type
- EW540
- Information
- European Psychiatry , Volume 33 , Issue S1: Abstracts of the 24th European Congress of Psychiatry , March 2016 , pp. s258 - s259
- Copyright
- Copyright © European Psychiatric Association 2014
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