Evidence map›Paper›PMID 40888742›Full record

Trial reportThe New England journal of medicine2025

Home-Based Care for Hypertension in Rural South Africa.

Mark J Siedner, Nombulelo Magula, Lusanda Mazibuko, Nsika Sithole, Alison Castle, Siyabonga Nxumalo, Thabang Manyaapelo, Shafika Abrahams-Gessel, Dickman Gareta, Joanna Orne-Gliemann and 3 more

Erratum issued Registry-linked trialAbstract readRandomized Controlled TrialMulticenter Study
In one paragraph

Trial report in The New England journal of medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT05492955 (Implementation of a Combination Intervention for Sustainable Blood Pressure Control in KwaZulu-Natal, South Africa), which is not on this map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05492955 nacompletednot on this map

Implementation of a Combination Intervention for Sustainable Blood Pressure Control in KwaZulu-Natal, South Africa (IMPACT-BP)

TypeinterventionalSponsorBrigham and Women's HospitalRan2022 to 2025Enrolled774ConditionsHypertensionArmsCommunity Health Worker Care Model, Enhanced Community Health Worker-based with Mobile Health Blood Pressure Monitoring Model, Standard of Care Model
3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Observational
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors.

Mark J SiednerAfrica Health Research Institute, Durban, South Africa.ORCID 0000-0003-3506-842X
Nombulelo MagulaDivision of Internal Medicine, University of KwaZulu-Natal, Durban, South Africa.
Lusanda MazibukoAfrica Health Research Institute, Durban, South Africa.
Nsika SitholeAfrica Health Research Institute, Durban, South Africa.
Alison CastleAfrica Health Research Institute, Durban, South Africa.
Siyabonga NxumaloAfrica Health Research Institute, Durban, South Africa.
Thabang ManyaapeloAfrica Health Research Institute, Durban, South Africa.
Shafika Abrahams-GesselHarvard T.H. Chan School of Public Health, Boston.
Dickman GaretaAfrica Health Research Institute, Durban, South Africa.
Joanna Orne-GliemannUniversity of Bordeaux, Bordeaux Population Health Center, Bordeaux, France.
Kathy BaisleyAfrica Health Research Institute, Durban, South Africa.
Max BachmannNorwich Medical School, University of East Anglia, Norwich, United Kingdom.
Thomas A GazianoDivision of Infectious Diseases and Medical Practice Evaluation Center, Department of Medicine, Massachusetts General Hospital, Boston.

Funding

PROGRAM FOR AIDS CLINICAL RESEARCH TRAINING (PACRT)T32AI007433 · NIAID · MASSACHUSETTS GENERAL HOSPITAL · PI MARK J SIEDNER · 1992 to 2026
$11.4M
Implementation of a Combination Intervention for Sustainable Blood Pressure Control in Rural KwaZulu-Natal, South Africa (IMPACT-BP)R01HL144848 · NHLBI · KWAZULU-NATAL RESEARCH INSTITUTE TB-HIV · PI GAZIANO, THOMAS A, SIEDNER, MARK J · 2020 to 2024
$2.9M
Mentoring patient-oriented research to improve cardiovascular health among people with HIV in sub-Saharan AfricaK24HL166024 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI MARK J SIEDNER · 2022 to 2026
$616k
Engaging men outside the HIV prevention paradigm in rural South AfricaK23MH136873 · NIMH · MASSACHUSETTS GENERAL HOSPITAL · PI Alison Clare Castle · 2025 to 2026
$392k
NHLBI NIH HHS K24 HL166024NHLBI NIH HHS R01 HL144848NIAID NIH HHS T32 AI007433NIH HHS HL144848NIMH NIH HHS K23 MH136873Wellcome TrustWellcome Trust 227167/A/23/Z
6 · The paper itself

Abstract

backgroundPoorly controlled hypertension is a common problem worldwide, particularly in low-resource settings.

methodsWe conducted an open-label, randomized, controlled trial of a home-based model of hypertension care in South Africa. Adults with hypertension were assigned to receive home-based care, which consisted of patient monitoring of blood pressure, home visits from a community health worker (CHW) for data collection and medication delivery, and remote nurse-led decision making supported by a mobile application (CHW group); enhanced home-based care, which consisted of the same intervention but with blood-pressure machines transmitting readings automatically (enhanced CHW group); or standard care with clinic-based management (standard-care group). The primary outcome was the systolic blood pressure at 6 months. Secondary outcomes were the systolic blood pressure at 12 months and hypertension control at 6 and 12 months. Safety outcomes included adverse events, deaths, and retention in care.

resultsA total of 774 adults underwent randomization. The mean age was 62 years; 76.0% of the participants were women, 13.6% had diabetes mellitus, and 46.5% had human immunodeficiency virus infection. The mean systolic blood pressure at 6 months was lower in the CHW group than in the standard-care group (difference, -7.9 mm Hg; 95% confidence interval [CI], -10.5 to -5.3; P<0.001) and was also lower in the enhanced CHW group than in the standard-care group (difference, -9.1 mm Hg; 95% CI, -11.7 to -6.4; P<0.001). The percentage of participants with hypertension control at 6 months was 32.5% in the standard-care group, as compared with 57.4% in the CHW group (relative risk, 1.76; 95% CI, 1.40 to 2.13) and 61.3% in the enhanced CHW group (relative risk, 1.89; 95% CI, 1.51 to 2.27). The improvements in systolic blood pressure and hypertension control with home-based care appeared to persist at 12 months. Severe adverse events and deaths occurred in 2.7% and 1.0% of the participants, respectively, and occurred in a similar percentage of participants across trial groups. Retention in care was observed in more than 95% of the participants in the CHW and enhanced CHW groups.

conclusionsIn South Africa, home-based hypertension care led to a significantly lower mean systolic blood pressure at 6 months than standard, clinic-based care. (Supported by the National Institutes of Health and others; IMPACT-BP ClinicalTrials.gov number, NCT05492955; South African National Clinical Trials Register number, DOH-27-112022-4895.).

Indexed as

Antihypertensive AgentsHome Care ServicesHypertensionRural PopulationAdultAgedBlood PressureBlood Pressure Monitoring, AmbulatoryClinical Decision-MakingCommunity Health WorkersFemaleHouse CallsHumansMaleMiddle AgedNursesAntihypertensive Agents

Identifiers

PMID40888742
PMCPMC12412915

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.