Medication adherence across the lifespan: Theory, methods, interventions and six grand challenges

A content analysis of medication adherence material in patient educational resources about gout

Objective

This study aimed to investigate how medication adherence is addressed in online gout resources in six countries. We investigated how often adherence was referred to, the strategies suggested to improve patient adherence, and the types of nonadherence that were targeted. We also examined the readability of the adherence material.

Methods

A content analysis was conducted on 151 online gout resources from medical and health organisations in six predominantly English-speaking countries. Two reviewers coded the content of the websites into categories (kappa 0.80). The analysis involved coding the resources for reasons for nonadherence, and adherence-promoting strategies. Flesch-Kincaid Reading Ease scores and word count were also computed.

Results

Out of 151 websites examined, 77 websites discussed medication adherence (51%), with intentional nonadherence being more prevalent than unintentional nonadherence. 67 websites targeted different types of nonadherence, including drug-specific concerns (50%), misconceptions of gout curability and the necessity of medication (16%), forgetfulness (16%), and other practical challenges (5%). Strategies to promote adherence were found in one-third of the websites, with medication education being the most prevalent strategy (17%), followed by healthcare provider engagement (13%) and memory aid strategies (6%). On average, about 11% of the words (89.27, SD = 76.35) in the entire document were focused on adherence. Difficult reading comprehension was found in one-fifth of adherence-related websites.

Conclusion

Findings reveal limited medication adherence coverage and narrow strategies in online gout resources. Improved adherence portrayal is needed for effective gout management through comprehensive strategies and clear, understandable information.

'Just keep taking them, keep hoping they'll work': A qualitative study of adhering to medications for multimorbidity

OBJECTIVE

Compared to single diseases, health psychology reflects many areas of medical research by affording relatively less attention to the experiences of people self-managing multiple co-occurring conditions and, in particular, the experience of managing the associated complex medication regimens. This study aimed to explore the experience of self-managing multimorbidity among older adults, with a focus on medication adherence.

DESIGN

A qualitative approach was taken, using individual semi-structured interviews.

METHODS

Sixteen people with complex multimorbidity aged 65 years or older were recruited through general practice to take part in semi-structured interviews. Data were analysed following guidelines for reflexive thematic analysis.

RESULTS

Two themes were generated, with each theme comprising three subthemes. Theme one represents the amplified burden arising from multimorbidity that leads to unique challenges for self-management, such as integrating multiple medications into daily life, accumulating new symptoms and treatments, and managing evolving medication regimens. Theme two represents pathways towards relief that reduce this burden and promote medication adherence, such as prioritising certain conditions and treatments, resigning to the need for multiple medications, and identifying and utilising adherence supports.

CONCLUSIONS

We identified factors relevant to medication adherence for older adults with multimorbidity that go beyond single-disease influences and account for the amplified experience of chronic disease that multimorbidity can produce for some people. While evidence of single-disease influences remains fundamental to tailoring behavioural interventions to individuals, the impact of multimorbidity on medication adherence should be accounted for in research and practice.

Beliefs about medication as predictors of medication adherence in a prospective cohort study among persons with multiple sclerosis

BACKGROUND

Though adherence to disease-modifying therapies (DMTs) among persons with multiple sclerosis (PwMS) varies and is often below 80%, only few prospective studies on adherence examined predictors beyond demographic and clinical characteristics.

OBJECTIVES

Identify antecedents to adherence and persistence to DMT in a prospective design among PwMS.

METHODS

PwMS (n = 186) were prospectively assessed at three time points: baseline, 6 (Time 1) and 12 months later (Time 2). Clinical, demographic information and patient-reported medication beliefs, illness perceptions, medication habits, perceived health and affect were surveyed in-person. Adherence and persistence were assessed by a combination of self-reports and retrospective review of medication claims.

FINDINGS

PwMS were 69.9% (Time 1) and 71% (Time 2) adherent to their DMTs and 64.5.9% were persistent. Beliefs about Medications were consistently predictive at both time points (baseline to Time 1 and Time 1 to Time 2) of medication adherence and persistence whereas other perceptions were predictive in some analyses; clinical and demographic characteristics were mostly not predictive of adherence nor persistence. The prospective association of beliefs about medication with adherence held also in multivariate analyses (OR = 0.88, 95% CI 0.78-0.99, p = 0.029).

CONCLUSIONS

Adherence and persistence are predicted by medication beliefs of PwMS. As medication beliefs are modifiable, they should be assessed periodically and targeted as a focus of tailored interventions aimed to improve adherence and consequently health outcomes in PwMS.

REGISTRATION

Clinical trials registry # NCT02488343 , date: 06/08/2015.

Psychosocial Determinants of the Intention to Take Oral Antihypertensive Drugs: A Cross-sectional Study

Objective: To identify the psychosocial predictors that influence the behavioral intention to take oral antihypertensive drugs. Materials and methods: A cross-sectional study, based on the theory of planned behavior. A questionnaire constructed and validated was applied to 220 individuals with systemic arterial hypertension in outpatient follow-up at a public hospital. The chi-square and Fisher’s exact tests, Spearman’s correlation and multiple logistic regression were used for data analysis. Results: The participants presented a high intention of taking antihypertensive drugs. The behavioral beliefs (ß = 0.0432; p = 0.0364), subjective norm (ß = -1.5708; p < 0.01) and perceived behavioral control (ß = 2.2809; p = 0.0028) explained the behavioral intention in 33 %. Conclusions: The behavioral beliefs, the subjective norm, and the perceived behavioral control are significant psychosocial predictors of taking antihypertensive drugs and must be valued, individually and jointly, in the health actions targeted at this population.

Multiple modality approach to assess adherence to medications across time in Multiple Sclerosis

BACKGROUND

Medication adherence is especially challenging in a chronic condition such as Relapsing Multiple Sclerosis (RMS). Medication adherence among persons with MS (PwMS) is usually assessed via a single measure, mostly electronic pharmacy records.

OBJECTIVES

Assess medication adherence in multiple modes across time among PwMS; examine consistency across time and associations between measures.

METHODS

PwMS (N = 194) were surveyed prospectively at three time points (baseline, 6 and 12 months later) and their health records and medication claims were retrospectively obtained. Adherence score was based on medication possession ratio (MPR) and two patient-reported outcome (PRO) measures. Electronic monitoring devices assessing medication adherence were also initiated.

RESULTS

MPR of each nonadherent PwMS, once compared to medical records containing prescription changes, was found as underestimating adherence. MPR was between the two PROs in identifying nonadherence and associations between the measures and across time was moderate (Kappa ranged 0.37-0.42). The use of electronic monitoring devices was not adopted by patients. A score indicated adherence as 66% and 64.9% at Time1 and Time 2, respectively, with 21.1% of PwMS nonadherent at both time points. Adherence did not vary significantly by DMT type.

CONCLUSIONS

Being a dynamic behavior, medication adherence should be repeatedly monitored by using multiple modalities and focused on in clinician-patient encounters, especially in chronic diseases such as MS, which requires long-term treatments. Applying PROs in monitoring medication adherence would facilitate implementation of Participatory Medicine and patient-centered strategies in MS care.

When Is Forgetting Not Forgetting? A Discursive Analysis of Differences in Forgetting Talk Between Adults With Cystic Fibrosis With Different Levels of Adherence to Nebulizer Treatments

Forgetting is often cited as a reason why people struggle to adhere to treatments for chronic conditions. Interventions have tried to improve forgetting behavior using reminders. We used a discursive psychological approach to explore differences in how high and low adherers constructed forgetting their nebulizer treatments for cystic fibrosis. Interviews were conducted with 18 adults from a cystic fibrosis center in the United Kingdom. High adherers constructed forgetting treatments as occasional lapses in automaticity and temporary lapses in memory that they found easy to repair. Low adherers utilized forgetting to normalize more consistent nonadherence to treatments. However, it is important to contextualize forgetting as a discursive resource that helped these participants to negotiate moral discourses around adherence to treatment that reminder interventions cannot address; we therefore recommend a more behavioral, patient-focused, theory-driven approach to intervention development.