ASHA-Led Community-Based Groups to Support Control of Hypertension in Rural India Are Feasible and Potentially Scalable

Assessing the knowledge and skill of ASHA community health workers in blood pressure measurement and primary care of hypertension

Introduction

India has a high burden of hypertension, and community health workers (CHWs) can contribute to its primary care. Studies of small-scale interventions have shown that trained CHWs can be useful contributors to hypertension care. No assessments are available in India on effectiveness of CHW training when conducted on a large scale.

Methods

A study was conducted in Chhattisgarh, where 38,000 Accredited Social Health Activist (ASHA) CHWs had been trained in blood pressure (BP) measurement and counselling skills related to hypertension. The study involved a skill test and a knowledge test with ten points each, administered to two representative samples of trained CHWs - 433 in rural areas and 422 in urban slums.

Results

The mean skill score out of 10 was 7.79 (7.59-7.99) and 8.11 (7.93-8.29) for the rural and urban CHWs, respectively. Around 75.3% (71.0-79.1%) of the rural and 80.3% (76.2-83.9%) of urban CHWs were able to score 70% (7 out of 10) or higher in the skill test. The mean knowledge score out of 10 was 8.18 (8.04-8.33) and 8.82 (8.78-8.93) for the rural and urban CHWs, respectively. Around 83.2% (79.3-86.4%) and 95.0% (94.4-96.7%) of the rural and urban CHWs, respectively, were able to score 70% or higher in the knowledge test.

Conclusion

The ASHAs in Chhattisgarh demonstrated the necessary competence to contribute to BP measurement and primary care of hypertension. It shows feasibility of training a large number of CHWs in such skills. Efforts to equip and support the 1 million strong cadre of ASHAs across India need to be speeded up.

Lay advisor interventions for hypertension outcomes: A Systematic Review, Meta-analysis and a RE-AIM evaluation

Introduction

Lay advisor interventions improve hypertension outcomes; however, the added benefits and relevant factors for their widespread implementation into health systems are unknown. We performed a systematic review to: (1) summarize the benefits of adding lay advisors to interventions on hypertension outcomes, and (2) summarize factors associated with successful implementation in health systems using the Reach, Effectiveness, Adoption, Implementation, Maintenance (RE-AIM) framework.

Methods

We systematically searched several databases, including Ovid MEDLINE, CINAHL, PsycINFO from January 1981 to May 2023. All study designs of interventions delivered solely by lay advisors for adults with hypertension were eligible. If both arms received the lay advisor intervention, the study arm with lower intensity was assigned as the low-intensity intervention.

Results

We included 41 articles, of which 22 were RCTs, from 7,267 screened citations. Studies predominantly included socially disadvantaged populations. Meta-analysis (9 RCTs; n = 4,220) of eligible lay advisor interventions reporting outcomes showed improved systolic blood pressure (BP) [-3.72 mm Hg (CI -6.1 to -1.3; I2 88%)], and diastolic BP [-1.7 mm Hg (CI -1 to -0.9; I2 7%)] compared to control group. Pooled effect from six RCTs (n = 3,277) comparing high-intensity with low-intensity lay advisor interventions showed improved systolic BP of -3.6 mm Hg (CI -6.7 to -0.5; I2 82.7%) and improved diastolic BP of -2.1 mm Hg (CI -3.7 to -0.4; I2 70.9%) with high-intensity interventions. No significant difference in pooled odds of hypertension control was noted between lay advisor intervention and control groups, or between high-intensity and low-intensity intervention groups. Most studies used multicomponent interventions with no stepped care elements or reporting of efficacious components. Indicators of external validity (adoption, implementation, maintenance) were infrequently reported.

Discussion

Lay advisor interventions improve hypertension outcomes, with high intensity interventions having a greater impact. Further studies need to identify successful intervention and implementation factors of multicomponent interventions for stepped upscaling within healthcare system settings as well as factors used to help sustain interventions.

Impact of community health workers on improving identification and primary care of hypertension among the urban poor - findings from Chhattisgarh state of India

BACKGROUND

Hypertension is a major health problem globally and in India. Around 60% of people with hypertension in India are not aware that they have the condition. Less than 30% of individuals with hypertension are on treatment. Existing studies have indicated that community health workers (CHWs) can play a useful role in expanding the care for hypertension. Evaluations are needed to study the impact when an intervention is implemented by the government in its existing large-scale CHW programme to improve the identification, regular follow-up and medication adherence for hypertension.

METHODS

Chhattisgarh state implemented a pilot intervention to improve screening and follow-up for hypertension by equipping Mitanin-CHWs to measure blood pressure (BP). The study design involved an intervention-group and a comparison-group of urban slum population. The survey covered 5974 individuals (30-79 years age) in intervention-group and 5131 in comparison-group. Multivariate analysis was conducted to find out the effect of intervention on the desired outcomes.

RESULTS

In intervention-group, 80.2% of the individuals (30-79 years age) had been screened for hypertension whereas the proportion was 37.9% in comparison-group. For 47.0% of individuals in intervention-group, Mitanin CHW was the provider who measured BP for the first time. Around 16.3% of individuals in intervention-group and 9.5% in comparison-group had been diagnosed with hypertension. Around 85.9% of hypertension cases in intervention-group and 77.0% in comparison-group were on treatment. BP had been measured in preceding 30 days for 81.8% of hypertension-cases in intervention-group and 64.3% in comparison-group. Around 70.3% of hypertension-cases in intervention-group and 55.1% in comparison-group had taken their complete medication for last seven days. Multivariate analysis showed that CHW intervention was associated significantly with improvements in all the desired outcomes.

CONCLUSION

Equipping the CHWs to measure BP was effective in increasing the screening and identification of hypertension, regular measurement of BP of individuals with hypertension and the adherence to medication. This shows the potential if the one-million strong work-force of Accredited-Social-Health-Activists (ASHA) CHWs in India gets equipped for this role. Governments need to provide a stronger policy push to get this materialised.

Empowering Communities: A Review of Community-Based Outreach Programs in Controlling Hypertension in India

India's epidemiological shift from communicable to non-communicable diseases (NCDs) signifies the impact of healthcare advancements and changing lifestyles. Despite declines in infectious diseases, challenges related to chronic conditions such as cardiovascular diseases and diabetes have risen. Approximately one in four Indian adults has hypertension, with only 12% maintaining controlled blood pressure. To meet the 25% relative reduction target in hypertension prevalence by 2025, India must enhance treatment access and public health initiatives. A global report underscores the urgency of preventing, detecting, and managing hypertension, especially in low- and middle-income countries like India, where 188.3 million adults are estimated to have hypertension. Loss to follow-up persists in both communicable and non-communicable diseases, driven by factors such as stigma and socioeconomic barriers. Community outreach programs have proven effective, incorporating mobile health interventions, community health worker engagement, and door-to-door screenings. Hypertension management faces similar challenges, with community outreach tailored to lifestyle factors and cultural beliefs showing promise. The comprehensive strategy to control hypertension involves strengthening primary healthcare centers, promoting wellness centers, and capacitating Community Health Officers. While community-led, tech-enabled private sector interventions can screen and manage NCDs, integration with the public health system is crucial for widespread adoption and cost-effectiveness. In conclusion, tailored strategies, such as community outreach integrated into healthcare systems, are essential to address loss to follow-up and enhance health management success in both communicable and non-communicable diseases.

Stakeholder perceptions on scaling-up community-led interventions for prevention and control of non-communicable diseases in Bangladesh: a qualitative study

BACKGROUND

Engaging communities is an important component of multisectoral action to address the growing burden of non-communicable diseases (NCDs) in low- and middle-income countries. We conducted research with non-communicable disease stakeholders in Bangladesh to understand how a community-led intervention which was shown to reduce the incidence of type 2 diabetes in rural Bangladesh could be scaled-up.

METHODS

We purposively sampled any actor who could have an interest in the intervention, or that could affect or be affected by the intervention. We interviewed central level stakeholders from donor agencies, national health policy levels, public, non-governmental, and research sectors to identify scale-up mechanisms. We interviewed community health workers, policy makers, and non-governmental stakeholders, to explore the feasibility and acceptability of implementing the suggested mechanisms. We discussed scale-up options in focus groups with community members who had attended a community-led intervention. We iteratively developed our data collection tools based on our analysis and re-interviewed some participants. We analysed the data deductively using a stakeholder analysis framework, and inductively from codes identified in the data.

RESULTS

Despite interest in addressing NCDs, there was a lack of a clear community engagement strategy at the government level, and most interventions have been implemented by non-governmental organisations. Many felt the Ministry of Health and Family Welfare should lead on community engagement, and NCD screening and referral has been added to the responsibilities of community health workers and health volunteers. Yet there remains a focus on reproductive health and NCD diagnosis and referral instead of prevention at the community level. There is potential to engage health volunteers in community-led interventions, but their present focus on engaging women for reproductive health does not fit with community needs for NCD prevention.

CONCLUSIONS

Research highlighted the need for a preventative community engagement strategy to address NCDs, and the potential to utilise existing cadres to scale-up community-led interventions. It will be important to work with key stakeholders to address gender issues and ensure flexibility and responsiveness to community concerns. We indicate areas for further implementation research to develop scaled-up models of community-led interventions to address NCDs.

Community health volunteer for blood pressure control in rural people with stroke in India: Pilot randomised trial

OBJECTIVE

To test the hypothesis that an Accredited social health activist (ASHA), a community health volunteer in a task-sharing model can help in sustained control of systolic blood pressure (BP) in rural people with Stroke and hypertension at 6 months follow up.

METHODS

In this randomized trial two rural areas (Pakhowal and Sidhwan bet) with 70 and 94 villages respectively were screened for people with stroke and hypertension. They were assigned to either ASHA-assisted BP control in addition to standard-of-care (Pakhowal-intervention Group) or standard-of-care alone (Sidhwan bet- Control Group). Assessors blinded to intervention conducted the baseline and 6 months follow-up visits to measure risk factors in both the rural areas.

RESULTS

A total of 140 people with stroke with mean age of 63.7 ± 11.5 years and 44.3% females were randomised. The baseline systolic BP was higher in the intervention group (n = 65,173.5 ± 22.9 mmHg) compared to the control group (n = 75,163 ± 18.7 mmHg, p = 0.004). The follow-up systolic BP was lower in the intervention group compared to the control group 145 ± 17.2 mmHg and 166.6 ± 25.7 mmHg respectively (p < 0.0001). According to the intention-to-treat analysis a total of 69.2% of patients in the intervention group achieved systolic BP control compared to 18.9% in the control group patients (OR 9, 95% CI 3.9-20.3; p < 0.0001).

CONCLUSION

Task sharing with ASHA a community health volunteer can improve BP control in rural people with stroke and hypertension. They can also help in the adoption of healthy behaviour.

CLINICAL TRIAL REGISTRATION NUMBER

ctri.nic.in, CTRI/2018/09/015709.