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Development of the purposeful action medication-taking questionnaire
Mary Jayne Johnson1, Sandra Rogers
1Brigham Young University, Provo, Utah, USA.
Western Journal of Nursing Research
|April 6, 2006
Summary
This study developed the Medication-Taking Questionnaire (MTQ) to assess why patients with hypertension accept medication. The validated MTQ: Purposeful Action tool shows good psychometric properties for understanding adherence decisions.
Area of Science:
- Health Psychology
- Psychometrics
- Clinical Pharmacy
Background:
- Medication adherence is crucial for managing hypertension effectively.
- Understanding the decision-making process (purposeful action) is key to improving adherence.
- Existing tools may not fully capture the reasons behind accepting medication treatment.
Purpose of the Study:
- To develop and validate the Medication-Taking Questionnaire (MTQ): Purposeful Action.
- To measure the purposeful action domain within the medication adherence model for hypertension.
- To provide a psychometrically sound instrument for assessing medication acceptance decisions.
Main Methods:
- A three-phase study involving item evaluation, psychometric analysis, and validation.
- Phase I: Content validity and clarity assessment.
- Phase II: Item analysis, internal consistency, exploratory factor analysis; Phase III: Temporal stability and construct validity.
Main Results:
- The final MTQ: Purposeful Action consists of 12 items across 2 subscales: treatment benefits and medication safety.
- The questionnaire demonstrated good internal consistency, temporal stability, and construct validity.
- Psychometric properties indicate the tool effectively represents the decision-making process for adherence.
Conclusions:
- The MTQ: Purposeful Action is a psychometrically validated instrument.
- It accurately measures the purposeful action domain in hypertension medication adherence.
- The tool can aid in understanding and improving patient adherence to hypertension treatment.