The roles of past behavior and health beliefs in predicting medication adherence to a statin regimen
Todd D Molfenter,1 Abhik Bhattacharya,2 David H Gustafson11Center for Health Enhancement Systems Studies (CHESS), Madison, WI, USA; 2Blue Health Intelligence, Chicago, IL, USAPurpose: Current medication-adherence predictive tools are based on patient medication-taking beliefs, but studying past beha...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Dove Medical Press
2012-09-01
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| Series: | Patient Preference and Adherence |
| Online Access: | http://www.dovepress.com/the-roles-of-past-behavior-and-health-beliefs-in-predicting-medication-a10932 |
| _version_ | 1818367757327007744 |
|---|---|
| author | Molfenter TD Bhattacharya A Gustafson DH |
| author_facet | Molfenter TD Bhattacharya A Gustafson DH |
| author_sort | Molfenter TD |
| collection | DOAJ |
| description | Todd D Molfenter,1 Abhik Bhattacharya,2 David H Gustafson11Center for Health Enhancement Systems Studies (CHESS), Madison, WI, USA; 2Blue Health Intelligence, Chicago, IL, USAPurpose: Current medication-adherence predictive tools are based on patient medication-taking beliefs, but studying past behavior may now be a more explanatory and accessible method. This study will evaluate if past medication-refill behavior for a statin regimen is more predictive of medication adherence than patient medication-taking health beliefs.Patients and methods: This prospective longitudinal study was implemented in a national managed care plan in the United States. A group of 1433 statin patients were identified and followed for 6 months. Medication-taking health beliefs, collected from self-reported mail questionnaires, and past medication-refill behavior, using proportion of days covered (PDC), were collected prior to 6-month follow-up. Outcomes were measured using categorical PDC variable (of adherence, PDC ≥ 85%, versus nonadherence, PDC < 85%), with model fit estimated using receiver operator characteristic analysis.Results: The area under the receiver operator characteristic curve for past behavior (Az = 0.78) was significantly greater (P < 0.05) than for patient health beliefs (Az = 0.69), indicating that past prescription-refill behavior is a better predictor of medication adherence than prospective health beliefs. Among health beliefs, the factor most related to medication adherence was behavioral intent (odds ratio, 5.12; 95% confidence interval, 1.84 to 15.06). The factor most strongly related to behavioral intent was impact of regimen on daily routine (odds ratio, 3.3; 95% confidence interval, 1.41 to 7.74).Conclusion: Electronic medical records and community health-information networks may make past prescription-refill rates more accessible and assist physicians with managing medication-regimen adherence. Health beliefs, however, may still play an important role in influencing medication-taking behaviors.Keywords: medication adherence, habit, health beliefs |
| first_indexed | 2024-12-13T22:57:07Z |
| format | Article |
| id | doaj.art-a76f9db017e24d71adbe94f6258f533d |
| institution | Directory Open Access Journal |
| issn | 1177-889X |
| language | English |
| last_indexed | 2024-12-13T22:57:07Z |
| publishDate | 2012-09-01 |
| publisher | Dove Medical Press |
| record_format | Article |
| series | Patient Preference and Adherence |
| spelling | doaj.art-a76f9db017e24d71adbe94f6258f533d2022-12-21T23:28:29ZengDove Medical PressPatient Preference and Adherence1177-889X2012-09-012012default643651The roles of past behavior and health beliefs in predicting medication adherence to a statin regimenMolfenter TDBhattacharya AGustafson DHTodd D Molfenter,1 Abhik Bhattacharya,2 David H Gustafson11Center for Health Enhancement Systems Studies (CHESS), Madison, WI, USA; 2Blue Health Intelligence, Chicago, IL, USAPurpose: Current medication-adherence predictive tools are based on patient medication-taking beliefs, but studying past behavior may now be a more explanatory and accessible method. This study will evaluate if past medication-refill behavior for a statin regimen is more predictive of medication adherence than patient medication-taking health beliefs.Patients and methods: This prospective longitudinal study was implemented in a national managed care plan in the United States. A group of 1433 statin patients were identified and followed for 6 months. Medication-taking health beliefs, collected from self-reported mail questionnaires, and past medication-refill behavior, using proportion of days covered (PDC), were collected prior to 6-month follow-up. Outcomes were measured using categorical PDC variable (of adherence, PDC ≥ 85%, versus nonadherence, PDC < 85%), with model fit estimated using receiver operator characteristic analysis.Results: The area under the receiver operator characteristic curve for past behavior (Az = 0.78) was significantly greater (P < 0.05) than for patient health beliefs (Az = 0.69), indicating that past prescription-refill behavior is a better predictor of medication adherence than prospective health beliefs. Among health beliefs, the factor most related to medication adherence was behavioral intent (odds ratio, 5.12; 95% confidence interval, 1.84 to 15.06). The factor most strongly related to behavioral intent was impact of regimen on daily routine (odds ratio, 3.3; 95% confidence interval, 1.41 to 7.74).Conclusion: Electronic medical records and community health-information networks may make past prescription-refill rates more accessible and assist physicians with managing medication-regimen adherence. Health beliefs, however, may still play an important role in influencing medication-taking behaviors.Keywords: medication adherence, habit, health beliefshttp://www.dovepress.com/the-roles-of-past-behavior-and-health-beliefs-in-predicting-medication-a10932 |
| spellingShingle | Molfenter TD Bhattacharya A Gustafson DH The roles of past behavior and health beliefs in predicting medication adherence to a statin regimen Patient Preference and Adherence |
| title | The roles of past behavior and health beliefs in predicting medication adherence to a statin regimen |
| title_full | The roles of past behavior and health beliefs in predicting medication adherence to a statin regimen |
| title_fullStr | The roles of past behavior and health beliefs in predicting medication adherence to a statin regimen |
| title_full_unstemmed | The roles of past behavior and health beliefs in predicting medication adherence to a statin regimen |
| title_short | The roles of past behavior and health beliefs in predicting medication adherence to a statin regimen |
| title_sort | roles of past behavior and health beliefs in predicting medication adherence to a statin regimen |
| url | http://www.dovepress.com/the-roles-of-past-behavior-and-health-beliefs-in-predicting-medication-a10932 |
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