Health Literacy and Medication Adherence Among Patients Treated in a Free Health Clinic: A Pilot Study

Association between health literacy and medication adherence in chronic diseases: a recent systematic review

BACKGROUND

Poor medication adherence is a serious barrier to successful chronic disease management. Previous reviews reported that low health literacy could be associated with medication non-adherence but conclusions were uncertain.

AIM

The aim of this systematic review was to clarify the relationship between health literacy and medication adherence in adults with chronic diseases. A secondary objective was to identify the factors that influence medication adherence.

METHOD

Publications analyzing the relationship between health literacy and adherence in adults with chronic diseases were identified through 6 databases between 2015 and 2020. A quality assessment was conducted in order to improve the interpretation of the relationship between health literacy and medication adherence. A narrative synthesis was then performed to describe the relationship between health literacy and medication adherence. The factors influencing medication adherence were then analyzed as a secondary outcome.

RESULTS

Among the 27 studies, 17 and 10 were considered to be of good and medium methodological quality, respectively. Concerning the relationship between health literacy and adherence, 14 reported a positive relationship, 1 study suggested a negative relationship, 3 found mixed results, and 9 reported not finding a relationship. Patient-related factors such as medication beliefs, self-efficacy, or medication knowledge, as well as demographic factors such as ethnic minority and incomes influence medication adherence.

CONCLUSION

The present review confirms an unclear relationship between health literacy and medication adherence. Although health literacy plays a substantial role in medication adherence, other factors must be taken into account when addressing non-adherence.

Cardiovascular Disease and Medication Adherence Among Patients with Type 2 Diabetes Mellitus in an Underserved Community

Optimal management of Type 2 diabetes mellitus (Type 2 DM) is impeded by widespread nonadherence to efficacious medication regimens. Cardiovascular disease (CVD) is the most common cause of morbidity and mortality among persons with Type 2 DM. In this work we evaluated the relationship between CVD and medication adherence to antihypertensives, oral hypoglycemic agents, and antidepressants among patients with Type 2 DM. We also sought to understand how patients perceived barriers to and facilitators of adherence to medications. Adherence to medications was measured in 72 primary care patients from the West Philadelphia area using electronic monitoring (Medication Event Monitoring System caps) over 12 weeks. Standard questions assessed the presence of CVD. Participants answered open-ended questions about barriers to and facilitators of medication adherence. Participants who had CVD were significantly less likely to achieve ≥80% adherence to an antidepressant, oral hypoglycemic agent, and antihypertensive medications at 12 weeks. Participants identified four themes related to medication adherence: Interference from Psychosocial Demands, Need for Technological Innovation, Awareness of Disease Severity, and Integrating Community Linkages. Interventions to improve medication adherence among persons with Type 2 DM in underserved communities may aim to address social determinants of health, create community linkages, emphasize disease severity and utilize apps which are integrated with existing primary care services.

Improving Medication Adherence Through Adaptive Digital Interventions (iMedA) in Patients With Hypertension: Protocol for an Interrupted Time Series Study

BACKGROUND

There is a strong need to improve medication adherence (MA) for individuals with hypertension in order to reduce long-term hospitalization costs. We believe this can be achieved through an artificial intelligence agent that helps the patient in understanding key individual adherence risk factors and designing an appropriate intervention plan. The incidence of hypertension in Sweden is estimated at approximately 27%. Although blood pressure control has increased in Sweden, barely half of the treated patients achieved adequate blood pressure levels. It is a major risk factor for coronary heart disease and stroke as well as heart failure. MA is a key factor for good clinical outcomes in persons with hypertension.

OBJECTIVE

The overall aim of this study is to design, develop, test, and evaluate an adaptive digital intervention called iMedA, delivered via a mobile app to improve MA, self-care management, and blood pressure control for persons with hypertension.

METHODS

The study design is an interrupted time series. We will collect data on a daily basis, 14 days before, during 6 months of delivering digital interventions through the mobile app, and 14 days after. The effect will be analyzed using segmented regression analysis. The participants will be recruited in Region Halland, Sweden. The design of the digital interventions follows the just-in-time adaptive intervention framework. The primary (distal) outcome is MA, and the secondary outcome is blood pressure. The design of the digital intervention is developed based on a needs assessment process including a systematic review, focus group interviews, and a pilot study, before conducting the longitudinal interrupted time series study.

RESULTS

The focus groups of persons with hypertension have been conducted to perform the needs assessment in a Swedish context. The design and development of digital interventions are in progress, and the interventions are planned to be ready in November 2020. Then, the 2-week pilot study for usability evaluation will start, and the interrupted time series study, which we plan to start in February 2021, will follow it.

CONCLUSIONS

We hypothesize that iMedA will improve medication adherence and self-care management. This study could illustrate how self-care management tools can be an additional (digital) treatment support to a clinical one without increasing burden on health care staff.

TRIAL REGISTRATION

ClinicalTrials.gov NCT04413500; https://clinicaltrials.gov/ct2/show/NCT04413500.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/24494.

Development of a Question Prompt List for Patients Living With HIV and Assessment of Their Information Needs

A question prompt list (QPL) is an efficient method to facilitate patient active participation and communication by providing patients with questions to ask their health care providers. We developed a QPL based on the information needs of patients living with HIV in Korea. A mixed method study design was used, involving five sequential steps: literature review, focus group interview with experienced nurses, in-depth interviews with patients, expert reviews, and a survey of 170 patients. A QPL with 27 questions was developed through literature reviews and expert reviews, and 12 questions were identified based on the Borich needs assessment model. Questions included items regarding diagnosis and prognosis, medication, depressive symptoms, sexual relationships, and family and social life. Our findings suggest that a QPL should be used as a tool to encourage effective communication for patients living with HIV.

Relationship Between Medication Literacy and Medication Adherence in Inpatients With Coronary Heart Disease in Changsha, China

Background: Medication literacy may be associated with medication safety, and medication adherence is critical in treating coronary heart disease. Few studies have explored the association between medication literacy and medication adherence in patients with coronary heart disease. The aim was to investigate the status of medication literacy and medication adherence among Chinese inpatients with coronary heart disease, and explore the association between medication literacy and medication adherence.

Methods: The study was a cross-sectional survey. Four hundred seventy inpatients with coronary heart disease were recruited from hospitals in Changsha, Hunan, China. Participants’ demographic and clinical data were retrieved from hospital charts. Medication adherence was assessed using the four-item Morisky Medication Adherence Scale. Medication literacy was assessed using the Chinese Version of the Medication Literacy Scale. For univariate analysis, potential factors influencing medication adherence were tested by T-tests, analysis of variance, and the Kruskal–Wallis H test. Binary logistic regression model was conducted with medication adherence as the outcome variable in order to analyze the association between medication literacy and medication adherence in inpatients with coronary heart disease.

Results: Among 512 participants, 470 (91.8%) produced valid responses for the survey. Mean (SD) of medication adherence score was 2.26 (13.6); only 13.6% had optimal medication adherence. Mean (SD) of medication literacy score was 7.52 (4.09); participants with adequate medication literacy was 30.2% (142). Binary logistic regression analysis indicated that medication literacy was an independent predictor associated with medication adherence. Participants with adequate medication literacy were more likely to have optimal medication adherence (OR 1.461 [95% CI: 0.114, 0.643]; P = 0.005), and participants with a high level of education (OR 0.613 [95% CI: 0.284, 0.694]; P< 0.001), a fewer number of medicines (OR 1.514 [95% CI: -0.631, -0.198]; P < 0.001), having medical insurance (OR 0.770 [95% CI: -1.769, 0.059]; P = 0.043), and single inpatients were more likely to be adherent (OR 1.655 [95% CI:-0.858, -0.149]; P = 0.005).

Conclusions: The study indicates a significant association between medication literacy and medication adherence in patients with coronary heart disease. These results suggest that medication literacy is an important consideration in the development, implementation, and evaluation of medication adherence interventions.

Health Literacy Studies Conducted in Australia: A Scoping Review

Health literacy (HL) is an essential component of various literacies mentioned in the field of health and education, including cultural, technological, media and scientific literacies. It is important for motivating higher consumer engagement. We aimed to review previous studies of HL in Australia to inform future studies, extend current knowledge and further enhance HL. Using search strings, a systematic search of four databases (i.e., MEDLINE; Embase; CINAHL and Eric) was carried out. A Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) based search strategy led to identification of a total of N = 9696 records, that were further screened for inclusion in the review. The review findings were categorized into three major themes: (1) HL and health numeracy; (2) contrast of: knowledge deficiency, knowledge gained, problems of current health care system and (3) HL measurement methods and its domains. The findings from this scoping review show a dearth of measurement tools with sound psychometric properties for assessing HL. The findings also reveal low levels of HL in consumers which is in turn affecting health-related behaviors, utilization of health services and navigation of the health system. More recent developments have tried to integrate vital aspects, including introduction of applications to increase HL and exploring HL in Aboriginal communities.