Antihypertensive Medication Adherence and Associated Factors: A Cross-Sectional Analysis of Patients Attending a National Referral Hospital in Asmara, Eritrea

High Burden and Trend in Nonadherence to Blood Pressure-Lowering Medications: Meta-Analysis of Data From Over 34 000 Adults With Hypertension in Sub-Saharan Africa

BACKGROUND

Nonadherence to blood pressure (BP)-lowering medication is a strong predictor of poor BP control. Sub-Saharan Africa has extremely low BP control rates (~10%), but it is unclear what the burden of medication nonadherence among Africans with hypertension is. This systematic review estimated the prevalence and determinants of nonadherence to BP-lowering medications in Sub-Saharan Africa.

METHODS AND RESULTS

Multiple databases were searched from inception to December 6, 2023. Two reviewers performed independent screening, extraction, and quality assessment of studies. We pooled the prevalence estimates using random effects meta-analyses and summarized the determinants using a narrative synthesis. From the 1307 records identified, we included 95 studies published between 1995 and 2023. The overall prevalence of nonadherence to BP-lowering medication among 34 102 people treated for hypertension in 27 countries was 43.9% (95% CI, 39.2-48.6). There was no change in the prevalence of nonadherence over time. Nonadherence varied by measurement method and by median age (39.4%, ≥57 years versus 47.9%, <57 years). Socioeconomic and patient-related factors were the most frequent factors influencing adherence. Active patient participation in management, accurate perceptions, and knowledge of hypertension and its treatment predicted good medication adherence, whereas high pill burden, medication cost, side effects, and comorbidities predicted poor adherence.

CONCLUSIONS

Two out of every 5 people are nonadherent to their BP treatment. With the African population projected to increase from 1.4 to ~2.5 billion by 2050, targeted strategies are urgently needed to optimize medication adherence in people with hypertension in Sub-Saharan Africa.

Prevalence of hypertensive retinopathy and its associated factors among adult hypertensive patients attending at Comprehensive Specialized Hospitals in Northwest Ethiopia, 2024, a multicenter cross-sectional study

INTRODUCTION

Hypertensive retinopathy refers to changes in the retinal microvasculature resulting from elevated blood pressure, and the global burden ranges from 2 to 85%. However, there was no evidence on prevalence and associated factors of hypertensive retinopathy among adult hypertensive patients in the study area even in Ethiopia.

OBJECTIVE

The aim of this study was to investigate prevalence of hypertensive retinopathy and associated factors in adult hypertensive patients attending at Comprehensive Specialized Hospitals in Northwest Ethiopia in 2024.

METHODS

Multicenter hospital-based cross-sectional study was conducted in Northwest Ethiopia Comprehensive specialized hospitals from June, 07 to August, 07, 2024. A multistage sampling technique with an interval of 3 was applied to select 696 study participants. Data were collected through personal interviews, review of medical records and eye examinations. Data were entered into the Kobo Toolbox and then transferred to STATA version 17 for analysis. Bivariable and then multivariable binary logistic regression models were fitted to determine factors associated with hypertensive retinopathy. Variables with a P-value of less than 0.05 at multivariable analysis were considered statistically significant.

RESULT

A total of 696 (95.34%) participants were included in the study. The prevalence of hypertensive retinopathy was 57.47%(95%CI: 53.75, 61.10). Age > 74 years (AOR = 4.24, 95%CI = 1.54,11.64), heart disease(AOR = 5.38, 95%CI = 1.86,15.58), duration of hypertension > 5years (AOR = 12.66, 95%CI = 3.88,41.29), dyslipidemia (AOR = 3.44,95%CI = 1.59-7.45), uncontrolled current levels of hypertension (AOR = 40.03, 95%CI = 17.19,93.18), poor adherence of hypertensive medications (AOR = 1.84, 95%CI = 1.12,3.03) and diabetes (AOR = 3.56, 95%CI = 1.49,5.99) were positively associated with hypertensive retinopathy.

CONCLUSION

-The prevalence of hypertensive retinopathy is high among systemic hypertensive patients seen in Northwest Ethiopia comprehensive specialized hospitals and independently associated with older age, longer duration of hypertension, heart disease, diabetes, dyslipidemia, poor adherence of hypertension medications and uncontrolled hypertension. Early diagnosis and treatment of hypertension was recommended to prevent target organ complications.

Uncontrolled hypertension among adult hypertensive patients in Addis Ababa public hospitals: A cross-sectional study of prevalence and associated factors

BACKGROUND

In 2019, 77% of women and 82% of men with hypertension had uncontrolled hypertension worldwide. Uncontrolled hypertension can cause stroke, myocardial infarction, heart failure, renal failure, dementia, blindness, and death. However, most of the studies used the previous seventh joint national committee classification to classify hypertensive patients as either controlled or uncontrolled. This study aimed to assess the prevalence and associated factors of uncontrolled hypertension among adult hypertensive patients at public hospitals in Addis Ababa, Ethiopia.

METHODS

From April 12 to May 12, 2024, three public hospitals in Addis Ababa employed a hospital-based cross-sectional study design with 408 hypertensive patients. Systematic random sampling was used to select the study participants. We used a structured interview questionnaire and chart review and took physical measurements. Data were entered into Epidata and analyzed using the statistical package for social science version 25. A logistic regression model was used to identify factors associated with uncontrolled hypertension at a P-value < 0.05 with a 95% confidence interval.

RESULTS

The prevalence of uncontrolled hypertension among hypertensive patients at public hospitals in Addis Ababa was 66.2% (95% CI: 61.6%, 70.8%). After adjusted analysis, age ≥ 60 years (AOR = 2.88, 95% CI: 1.37, 6.04), the presence of comorbidities (AOR = 2.21, 95% CI: 1.23, 3.96), being overweight (AOR = 2.25, 95% CI: 1.20, 4.24), non-adherence to antihypertensive medication (AOR = 5.21, 95% CI: 2.76, 9.83), non-adherence to a low-salt diet and dietary approaches to stop hypertension (AOR = 2.74, 95% CI: 1.35, 5.53), taking three or more antihypertensive medications (AOR = 3.10, 95% CI: 1.16, 8.25), and non-adherence to physical exercise (AOR = 2.84, 95% CI 1.49, 5.39) were factors associated with uncontrolled hypertension.

CONCLUSIONS

Uncontrolled hypertension was very high in public hospitals in Addis Ababa, Ethiopia. Key factors for uncontrolled hypertension are non-adherence to antihypertensive medications, use of multiple medications, lack of physical exercise, and low adherence to low salt and dietary approaches to stop hypertension. To address these, enhancing patient education on medication adherence, promoting lifestyle changes, and leveraging digital health tools, like mobile apps, for real-time support and adherence tracking are recommended.

Pharmacovigilance monitoring and treatment adherence in patients on antihypertensive drugs at a tertiary care centre

Background

Hypertension is one of the main factors contributing to the global burden of non-communicable diseases. Previous research has revealed that stress, bad lifestyle choices and a lack of knowledge about the disease are the main causes of hypertension that can be controlled. The key cause behind the prevalence of the condition is the lack of medication adherence by patients. This study aims to evaluate medication adherence in patients with hypertension through the Morisky Medication Adherence Scale (MMAS) and to observe any adverse drug reaction leading to non-adherence of medications.

Methods

A descriptive, cross-sectional study was conducted on 124 patients who attended the outpatient department of medicine. The descriptive tools were MMAS and causality scales for adverse drug reactions.

Result

The mean MMAS score was 5.20±1.29. Amongst the demographic profile, age, sex, comorbidities and duration of disease were significantly associated with decreased mean MMAS scores. Forty-two patients experienced drug reactions and only four patients were adherent to their medications.

Conclusion

Our study suggests that patients were poorly adherent to their medications. Effective interventions should be considered to improve adherence in patients. Monitoring for adverse drug reactions can lead to improved patient outcomes, whilst interventions to improve adherence can lead to better blood pressure control and reduced risk of cardiovascular events.

Barriers to Medication Adherence Among Patients with Non-Communicable Disease in North Wollo Zone Public Hospitals: Socio-Ecologic Perspective, 2023

Background

The practice of taking medication as directed by a healthcare provider is known as medication adherence. Therefore, the application of a socio-ecological model to this study identifies multilevel factors on barriers of medication adherence on chronic non-communicable disease and provides information to develop scientific health communication interventional strategies to improve medication adherence.

Objective

This study aimed to explore barriers of medication adherence on non-communicable disease prevention and care among patients in North Wollo Zone public hospitals, northeast Ethiopia.

Methods

A phenomenological study design was carried out between February 5 and February 30, 2023. The study participants were chosen using a heterogeneous purposive sampling technique. In-depth interviews and targeted focus groups were used to gather data. The focus group discussions and in-depth interviews were captured on audio, accurately transcribed, and translated into English. Atlas TI-7 was utilized to do the thematic analysis.

Results

Four main themes, intrapersonal, interpersonal, community level, and health care related, as well as seven subthemes, financial problems, lack of family support, poor communication with healthcare providers, effects of social ceremonies, remote healthcare facility, and drug scarcity, were identified by this study. In this study participants reported that lack of knowledge about the disease and drugs were the main barrier for medication adherence. The study revealed that financial problems for medication and transportation cost were the main factor for medication adherence for non-communicable disease patients.

Conclusion

This study explored that lack of knowledge, financial problem, lack of family support, poor communication with healthcare providers, social ceremony effects, remote healthcare facility, and scarcity of drugs were barriers of medication adherence among non-communicable disease patients. In order to reduce morbidity and mortality from non-communicable diseases, it is advised that all relevant bodies look for ways to reduce medication adherence barriers for patients at every level of influence.

Predictors of non-adherence to antihypertensive medications: A cross-sectional study from a regional hospital in Afghanistan

BACKGROUND

Non-adherence to antihypertensive medications (AHMs) is a widespread problem. Cardiovascular morbidity and mortality reduction is possible via better adherence rates among hypertensive patients.

OBJECTIVES

This study aimed to assess the prevalence of non-adherence to AHMs and its predictors among hypertensive patients who attended Mirwais Regional Hospital in Kandahar, Afghanistan.

METHODS

A cross-sectional study using random sampling method was conducted among hypertensive patients, aged ≥18 years in Mirwais Regional Hospital at a 6-month follow-up between October and December 2022. To assess non-adherence to AHMs, we employed the Hill-Bone Medication Adherence scale. A value below or equal to 80% of the total score was used to signify non-adherence. A multivariable binary logistic regression model was used to identify predictors of non-adherence to AHMs.

RESULTS

We used data from 669 patients and found that 47.9% (95%CI: 44.1-51.8%) of them were non-adherent to AHMs. The majority (71.2%) of patients had poorly controlled blood pressure (BP). The likelihood of non-adherence to AHMs was significantly higher among patients from low monthly-income households [Adjusted odds ratio (AOR) 1.70 (95%CI: 1.13-2.55)], those with daily intake of multiple AHMs [AOR 2.02 (1.29-3.16)], presence of comorbid medical conditions [AOR 1.68 (1.05-2.67), lack of awareness of hypertension-related complications [AOR 2.40 (1.59-3.63)], and presence of depressive symptoms [AOR 1.65 (1.14-2.38)].

CONCLUSION

Non-adherence to AHMs was high. Non-adherence to AHMs is a potential risk factor for uncontrolled hypertension and subsequent cardiovascular complications. Policymakers and clinicians should implement evidence-based interventions to address factors undermining AHMs adherence in Afghanistan.

Cross-sectional analysis of factors associated with medication adherence in western Kenya

OBJECTIVES

Poor medication adherence in low-income and middle-income countries is a major cause of suboptimal hypertension and diabetes control. We aimed to identify key factors associated with medication adherence in western Kenya, with a focus on cost-related and economic wealth factors.

SETTING

We conducted a cross-sectional analysis of baseline data of participants enrolled in the Bridging Income Generation with Group Integrated Care study in western Kenya.

PARTICIPANTS

All participants were ≥35 years old with either diabetes or hypertension who had been prescribed medications in the past 3 months.

PRIMARY AND SECONDARY OUTCOME MEASURES

Baseline data included sociodemographic characteristics, wealth and economic status and medication adherence information. Predictors of medication adherence were separated into the five WHO dimensions of medication adherence: condition-related factors (comorbidities), patient-related factors (psychological factors, alcohol use), therapy-related factors (number of prescription medications), economic-related factors (monthly income, cost of transportation, monthly cost of medications) and health system-related factors (health insurance, time to travel to the health facility). A multivariable analysis, controlling for age and sex, was conducted to determine drivers of suboptimal medication adherence in each overarching category.

RESULTS

The analysis included 1496 participants (73.7% women) with a mean age of 60 years (range 35-97). The majority of participants had hypertension (69.2%), 8.8% had diabetes and 22.1% had both hypertension and diabetes. Suboptimal medication adherence was reported by 71.2% of participants. Economic factors were associated with medication adherence. In multivariable analysis that investigated specific subtypes of costs, transportation costs were found to be associated with worse medication adherence. In contrast, we found no evidence of association between monthly medication costs and medication adherence.

CONCLUSION

Suboptimal medication adherence is highly prevalent in Kenya, and primary-associated factors include costs, particularly indirect costs of transportation. Addressing all economic factors associated with medication adherence will be important to improve outcomes for non-communicable diseases.

TRIAL REGISTRATION NUMBER

NCT02501746.

Quality of Life and Adherence to Healthcare Services During the COVID-19 Pandemic: A Cross-Sectional Analysis

Purpose

To determine the relationship of various domains of quality of life (QoL) with healthcare adherence during the COVID-19 pandemic in Saudi Arabia.

Methods

The study sample comprised 795 participants among which 203 had a current diagnosis of any major NCDs, including cardiovascular diseases, diabetes mellitus, asthma, chronic pulmonary diseases, and chronic psychiatric illnesses and a control group of 592 participants who had no NCD. Participants completed an online survey questionnaire which obtained data on socio-demographic variables, types of NCDs, and healthcare adherence during the year 2020, the period during which Saudi Arabia underwent the first two waves of the COVID-19 pandemic. World Health Organization Quality of Life (WHOQOL-BREF) assessed the QoL in four domains physical, psychological, social and environmental and used standard scores in the analysis. GraphPad Prism 5 and SPSS 25V were employed for the statistical analysis. Bar graphs and frequency distribution tables present descriptive data. Bivariate and multivariate logistic regression analyses were computed to determine the significance of the relationship between QoL and healthcare adherence.

Results

Almost equal proportions of participants with NCDs (n=109/203; 54%) and without NCDs (n=327/592; 55%) demonstrated nonadherence to their regular healthcare during the COVID-19 pandemic (χ2=0.14; p=0.71). Patients with NCDs experienced lower quality of life in the psychological, social and environmental domains of QoL (p<0.05). Results from the multivariate regression analysis showed that female gender (AOR=1.52; p<0.05) psychological QoL (AOR=1.99; p<0.05), social QoL (AOR=1.98; p<0.05) and environmental QoL (AOR=1.95; p<0.05) significantly relate with adherence to healthcare.

Conclusion

Psychological, social and environmental may influence healthcare adherence among patients with NCDs during pandemics and should be focused on while devising future healthcare policy and interventions.