Research Article
Have access already?
Get access to this article:
Or get access to the particular issue:
- Perpetual access Add to cart ($49.95)
Or get access to the entire journal:
Abstract
Background: Many patients experience difficulty taking medications resulting in suboptimal adherence. Ambiguity surrounding adherence issues in chronic illness has been exacerbated by a lack of patient-centered, medication-specific, and theoretically integrative measurement instruments. Aim: To develop a reliable and valid instrument to measure the factors that influence adherence in patients prescribed pharmacotherapy for coronary artery disease. Methods: Phase 1 involved the development of instrument structure and content. Constructs to be measured were defined through an analysis of adherence literature and qualitative interviews with patients. Phase 2 established the psychometric properties of the instrument. Exploratory factor analyses, reliability, and validity estimations were undertaken with a sample of patients (n = 404) from 3 tertiary cardiology referral centers. Results: Factor analyses resulted in a logically coherent, 16-item, three-factor solution that explained 50.5% variance. The factors were labelled: “Medication Planning Strategies,” “Health Risk, and Health Protection.” Internal consistency reliability met acceptable standards (α = .700 to α = .785). Fair to excellent intraclass correlations for temporal stability were demonstrated (.498–.882). Preliminary construct validity was supported by promising findings in relation to content validity results and factor structure stability. Conclusions: A new adherence instrument for patients on pharmacotherapy for coronary artery disease has been developed and initial psychometric properties have been established. Additional instrument validation will be directed at further establishing construct and criterion-related validity. It is intended that this measure will be useful in identifying factors that impede or facilitate adherent behavior and contribute to advancing the science of instrument development within adherence research.
Period | Abstract | Full | Total | |
---|---|---|---|---|
Apr 2024 | 8 | 0 | 0 | 8 |
Mar 2024 | 15 | 0 | 0 | 15 |
Feb 2024 | 3 | 0 | 0 | 3 |
Jan 2024 | 7 | 0 | 0 | 7 |
Dec 2023 | 1 | 0 | 0 | 1 |
Nov 2023 | 13 | 0 | 0 | 13 |
Oct 2023 | 5 | 0 | 0 | 5 |
Sep 2023 | 4 | 0 | 0 | 4 |
Jul 2023 | 4 | 0 | 0 | 4 |
Jun 2023 | 13 | 0 | 0 | 13 |
May 2023 | 2 | 0 | 0 | 2 |
Apr 2023 | 12 | 0 | 0 | 12 |
Mar 2023 | 2 | 0 | 0 | 2 |
Feb 2023 | 1 | 0 | 0 | 1 |
Jan 2023 | 8 | 0 | 0 | 8 |
Dec 2022 | 20 | 0 | 0 | 20 |
Nov 2022 | 21 | 0 | 0 | 21 |
Oct 2022 | 38 | 0 | 0 | 38 |
Sep 2022 | 7 | 0 | 0 | 7 |
Aug 2022 | 18 | 0 | 0 | 18 |
Jul 2022 | 7 | 0 | 0 | 7 |
Jun 2022 | 6 | 0 | 0 | 6 |
May 2022 | 3 | 0 | 0 | 3 |
Apr 2022 | 10 | 0 | 0 | 10 |
Mar 2022 | 34 | 0 | 1 | 35 |
Feb 2022 | 12 | 0 | 1 | 13 |
Jan 2022 | 12 | 3 | 1 | 16 |
Dec 2021 | 22 | 0 | 0 | 22 |
Nov 2021 | 7 | 0 | 0 | 7 |
Oct 2021 | 5 | 0 | 0 | 5 |
Sep 2021 | 5 | 0 | 0 | 5 |
Aug 2021 | 2 | 0 | 0 | 2 |
Jul 2021 | 7 | 0 | 0 | 7 |
Jun 2021 | 3 | 0 | 0 | 3 |
May 2021 | 20 | 1 | 1 | 22 |
Apr 2021 | 48 | 0 | 0 | 48 |
Mar 2021 | 18 | 0 | 0 | 18 |
Feb 2021 | 28 | 0 | 0 | 28 |
Jan 2021 | 21 | 0 | 0 | 21 |
Dec 2020 | 19 | 0 | 0 | 19 |
Nov 2020 | 24 | 1 | 1 | 26 |
Oct 2020 | 6 | 0 | 0 | 6 |
Sep 2020 | 21 | 0 | 0 | 21 |
Aug 2020 | 30 | 0 | 0 | 30 |
Jul 2020 | 12 | 0 | 0 | 12 |
Jun 2020 | 80 | 2 | 2 | 84 |
May 2020 | 6 | 0 | 0 | 6 |
Apr 2020 | 13 | 0 | 0 | 13 |
Mar 2020 | 30 | 0 | 0 | 30 |
Feb 2020 | 18 | 0 | 0 | 18 |
Jan 2020 | 63 | 0 | 0 | 63 |
Dec 2019 | 5 | 0 | 0 | 5 |
Nov 2019 | 11 | 0 | 0 | 11 |
Oct 2019 | 2 | 0 | 0 | 2 |
Sep 2019 | 9 | 0 | 0 | 9 |
Aug 2019 | 3 | 0 | 0 | 3 |
Jul 2019 | 9 | 0 | 0 | 9 |
Jun 2019 | 3 | 0 | 0 | 3 |
May 2019 | 3 | 0 | 0 | 3 |
Apr 2019 | 14 | 0 | 0 | 14 |
Mar 2019 | 3 | 0 | 0 | 3 |
Feb 2019 | 10 | 0 | 0 | 10 |
Jan 2019 | 10 | 0 | 0 | 10 |
Dec 2018 | 9 | 0 | 0 | 9 |
Nov 2018 | 4 | 0 | 0 | 4 |
Oct 2018 | 2 | 2 | 1 | 5 |
Sep 2018 | 1 | 0 | 0 | 1 |
Aug 2018 | 3 | 0 | 0 | 3 |