Assessment of Medication Adherence and Related Factors in Hypertensive Patients: The Role of Beliefs About Medicines

Factors affecting medication adherence in patients using oral chemotherapy: A descriptive study

IntroductionThe utilization of oral chemotherapy agents for cancer treatment has witnessed a steady rise in recent years. The pivotal determinant for the success of oral chemotherapy lies in the adherence of cancer patients to the prescribed treatment. This study aims to explore oral chemotherapy adherence and identify factors influencing medication adherence among cancer patients.MethodsA total of 103 cancer patients participated in this descriptive study. Data were collected using the Oral Chemotherapy Adherence Scale, the Turkish Translation of the Beliefs about Medicines Questionnaire (BMQ-T) and The Functional Living Index-Cancer.ResultsOf the participants, 66% reported good adherence to oral chemotherapy. Key findings indicate that access to health services (β = -1.473, p = 0.009), cancer stage (β = -1.570, p = 0.015) and the BMQ-T subscale of General Overuse (β = .696, p = 0.041) were independent predictors of medication adherence.ConclusionThe study observed medication non-adherence in one-third of patients undergoing oral chemotherapy. Primary contributors to non-adherence included difficulties in accessing health services, advanced cancer stage and the belief that drugs are over-recommended by doctors. These results underscore the need for a heightened focus on preventable factors, such as improving access to health services and addressing beliefs about drug overuse, to enhance medication adherence in patients receiving oral chemotherapy.

Factors influencing medication adherence among hypertensive patients in primary care settings in Central Vietnam: A cross-sectional study

BACKGROUND

Medication adherence plays a crucial role in effectively managing hypertension, a significant public health concern, especially in regions like Central Vietnam. This study aimed to assess medication adherence levels among hypertensive patients in primary care settings and explore the factors influencing adherence within this specific population.

METHODS

We conducted a cross-sectional study to evaluate medication adherence and its determinants among individuals with hypertension in Central Vietnam. Medication adherence was assessed using the 5-item version of the Medication Adherence Report Scale self-report. We collected data on the demographics, medical history, lifestyle, hypertension knowledge, along with the patient beliefs and perceptions about hypertension. Logistic regression analysis was employed to identify the key factors associated with their medication adherence.

RESULTS

Our study revealed that only half of the hypertensive patients adhered to their prescribed medication regimens. Several factors significantly influenced their medication adherence, including age, ethnicity, educational level, home blood pressure monitoring, healthy diet, time since hypertension diagnosis, hypertension knowledge, and patient beliefs. According to the logistic regression analysis, a healthy diet and patient beliefs emerged as primary predictors of medication adherence. Patients who strongly believed in the necessity of medication demonstrated better adherence, while concerns about overuse and harm were linked to lower adherence levels.

CONCLUSIONS

This study highlighted the suboptimal levels of medication adherence among hypertensive patients in primary care settings in Central Vietnam. It underscored the urgent need for tailored interventions to address this issue. For the sake of better medication adherence, healthcare providers were suggested to prioritize patient education, address patient beliefs and concerns about medication, and promote the practice of home blood pressure monitoring.

Quality-of-life and beliefs about medication in relation to a therapy adherence intervention in resistant hypertension: the Resistant HYpertension: MEasure to ReaCh Targets trial

OBJECTIVE

To assess the impact of personalized feedback on therapy adherence testing results on quality of life and beliefs about medication in patients with resistant hypertension, as well as to identify patient-oriented predictors of therapy adherence.

METHODS

This study was a prespecified post hoc analysis of the multicenter randomized controlled trial Resistant HYpertension: MEasure to ReaCh Targets (RHYME-RCT). Patients were randomized to a personalized feedback conversation on measured antihypertensive drug levels additional to standard-of-care, or standard-of-care only. The primary outcomes consisted of EuroQol EQ-5D-5L and Beliefs about Medicine Questionnaire (BMQ) scores at 12 months.

RESULTS

A total of 56 patients with median age 61.5 [25th-75th percentile: 55.8-69.3] years (21.4% women) were included. Mean blood pressure ±SD was 149.8/84.1 ± 14.9/13.8 mmHg while being on a median of 5.6 [4.8-7.3] defined daily dosages (DDD) of antihypertensive drugs. At 12 months, no differences were observed in EQ-5D-5L index (0.81 [0.69-0.89] vs. 0.89 [0.73-1.00]; P  = 0.18) and visual analogue scale score on general patient-perceived health (70 [60-80] vs. 70 [60-82]; P  = 0.53) between the intervention-arm and the standard-of-care only-arm. Likewise, individual EQ-5D-5L domain scores and BMQ scores did not differ between both arms. Irrespective of the intervention, independent positive predictors of the percentage adherence were patient age, EQ-5D-5L index score, BMQ-specific necessity score and concern score, whereas the total number of drugs prescribed was a negative predictor.

CONCLUSION

Within this prespecified subanalysis of the randomized RHYME-RCT trial, implementation of a personalized feedback conversation targeting therapy adherence did not improve health-related quality-of-life and beliefs about medication in patients with resistant hypertension.

Beliefs about medications when treating hypertension in primary health care: results from "PERson-centredness in hypertension management using information Technology (PERHIT)"

PURPOSE

Hypertension is a major global health concern. Despite of efficient antihypertensive medications a low percentage of patients reach a blood pressure (BP) of <140/90. Nonadherence is a great concern in hypertension treatment and patients' beliefs about medications has been shown to have a strong impact on adherence. The objective of this study is to examine beliefs about medications and its impact on BP treatment in a group of Swedish primary healthcare patients treated for hypertension with or without an E-health platform.

MATERIALS AND METHOD

In a randomised unblinded controlled trial, 949 patients with hypertension from Swedish primary health care centres were included. The intervention group used a web-based system to support self-management of hypertension for eight weeks. Beliefs about medication questionnaire (BMQ) were administered to all patients at inclusion, 8-week follow up and 1-year follow up.

RESULTS

Data were collected from the 862 patients who completed the trial. No statistically significant difference was found in BMQ-scores between the intervention and the control group. An association between lower scores in the BMQ subsection 'General-Harm' and achieving target BP of <140/90 mmHg were noted (p = 0.021).

CONCLUSION

This study shows a significant association between beliefs about medication and BP levels, on hypertensive patients in the Swedish primary care setting, in only one out of four subsections of the BMQ. The intervention did not have a significant effect on changing patients' beliefs about medication. Further emphasis on patients' beliefs about medications could be useful in the clinical setting.

Nurses' role in promoting medication adherence

ABSTRACT

A patient's willingness and desire to adhere to their medication plan are affected by their beliefs about taking medications, their self-efficacy, health literacy level, ability to afford prescription drug costs, and relationship with their clinicians. This article details strategies for creating a collaborative relationship with the patient, developing trust, and nurturing medication adherence.

Medication Adherence in Hypertensive Individuals in Panama 2019: A National Cross-Sectional Study

Poor medication adherence is a public health concern leading to a large burden of cardiovascular disease among persons with hypertension. Using data from 3281 persons with diagnosed hypertension (N = 622,581) from the Panamanian National Health Survey (ENSPA) collected in 2019, we assessed the national prevalence of low-moderate medication adherence in hypertensive individuals using the 4-scale Morisky Medication Adherence Scale (4-MMAS) and identifying gender-specific associated factors. Multivariate logistic regression models were used to estimate the association between possible risk factors and low-moderate medication adherence with odds ratios (OR) and 95% confidence intervals (95% CI) stratified by gender. The national prevalence of low-moderate medication adherence was 78.2% (95% CI: 74.7-81.0%); in men it was 74.4% (95% CI: 67.5-80.3%) and in women it was 81.4% (78.4-84.0%). In women, low-moderate medication adherence was associated with living in indigenous area (OR: 5.15; 95% CI: 1.40-18.98), educational level (OR no formal education: 0.77, 95% CI 0.28-2.14; OR for primary education: 0.76, 95% CI 0.38-1.56; OR for secondary education: 0.90, 95% CI 0.48-1.70; Higher education as reference), increased BMI (normal as reference, OR for overweight: 1.35, 95% CI: 0.73-2.50, OR for obesity: 1.65, 95% CI: 0.90-3.03) and medical diagnosis of anxiety/depression (OR: 4.89, 95% CI: 1.36-17.49). However, in men, it was associated with having secondary education (OR: 2.94; 95% CI: 1.03-8.36), currently smoking (OR: 16.74, 95% CI: 1.83-152.70), taking antihypertensive medication with denial of hypertension diagnosis (OR: 4.35, 95% CI: 1.11-17.11) and having less than three annual check-ups (OR for no health check-ups: 2.97, 95% CI: 0.63-13.88; OR for 1-2 check-ups: 1.61, 95% CI: 0.78-3.32: three or more health check-ups: reference). Time since diagnosis was inversely associated with low-moderate adherence. This study assesses for the first time the national prevalence of low-moderate medication adherence among hypertensive individuals in Panama. Low-moderate medication adherence is an important public health issue that should be addressed to achieve blood pressure control in patients diagnosed with hypertension, taking into account gender-specific factors.

Global Burden, Regional Differences, Trends, and Health Consequences of Medication Nonadherence for Hypertension During 2010 to 2020: A Meta-Analysis Involving 27 Million Patients

Background

Nonadherence to antihypertensive medications is the leading cause of poor blood pressure control and thereby cardiovascular diseases and mortality worldwide.

Methods and Results

We investigated the global epidemiology, regional differences, and trend of antihypertensive medication nonadherence via a systematic review and meta‐analyses of data from 2010 to 2020. Multiple medical databases and clinicaltrials.gov were searched for articles. Observational studies reporting the proportion of patients with anti‐hypertensive medication nonadherence were included. The proportion of nonadherence, publication year, year of first recruitment, country, and health outcomes attributable to antihypertensive medication nonadherence were extracted. Two reviewers screened abstracts and full texts, classified countries according to levels of income and locations, and extracted data. The Joanna Briggs Institute prevalence critical appraisal tool was used to rate the included studies. Prevalence meta‐analyses were conducted using a fixed‐effects model, and trends in prevalence were analyzed using meta‐regression. The certainty of evidence concerning the effect of health consequences of nonadherence was rated according to Grading of Recommendations, Assessment, Development and Evaluations. A total of 161 studies were included. Subject to different detection methods, the global prevalence of anti‐hypertensive medication nonadherence was 27% to 40%. Nonadherence was more prevalent in low‐ to middle‐income countries than in high‐income countries, and in non‐Western countries than in Western countries. No significant trend in prevalence was detected between 2010 and 2020. Patients with antihypertensive medication nonadherence had suboptimal blood pressure control, complications from hypertension, all‐cause hospitalization, and all‐cause mortality.

Conclusions

While high prevalence of anti‐hypertensive medication nonadherence was detected worldwide, higher prevalence was detected in low‐ to middle‐income and non‐Western countries. Interventions are urgently required, especially in these regions. Current evidence is limited by high heterogeneity.

Registration

URL: www.crd.york.ac.uk/prospero/; Unique identifier: CRD42021259860.