Evidence map›Paper›PMID 28993383›Full record

ArticleBMJ open2017

Impacts of undetected and inadequately treated hypertension on incident stroke in China.

Thang S Han, Harry Hao-Xiang Wang, Li Wei, Yuesong Pan, Ying Ma, Yu Wang, Jiaji Wang, Zhi Hu, Pankaj Sharma, Ruoling Chen

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 8% of its field
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Untreated and uncontrolled hypertension in Japanese patients with spontaneous intracerebral hemorrhage.Hypertension research : official journal of the Japanese Society of Hypertension · 2025
    Article
  5. Article
  6. Article
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  8. Observational
  9. Article
  10. Article
  11. Article
  12. Association between socioeconomic status and incident stroke in China.Journal of epidemiology and community health · 2020
    Article
  13. Article
  14. Associations of body fat and skeletal muscle with hypertension.Journal of clinical hypertension (Greenwich, Conn.) · 2019
    Article
  15. Article
  16. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 8 institutions in 2 countries.

Thang S HanInstitute of Cardiovascular Research, Royal Holloway University of London (ICR2UL), Egham, UK.
Harry Hao-Xiang WangSchool of Public Health, School of Public Health, Sun Yat-Sen University, Guangzhou, China.
Li WeiDepartment of Practice and Policy, University College London, London, UK.
Yuesong PanDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.ORCID http://orcid.org/0000-0003-3082-6789
Ying MaSchool of Health Administration, Anhui Medical University, Hefei, China.
Yu WangPojen General Hospital, Taipei, China.
Jiaji WangSchool of Public Health, Guangzhou Medical University, Guangzhou, China.
Zhi HuSchool of Health Administration, Anhui Medical University, Hefei, China.
Pankaj SharmaInstitute of Cardiovascular Research, Royal Holloway University of London (ICR2UL), Egham, UK.
Ruoling ChenCentre for Health and Social Care Improvement, Faculty of Education, Health and Wellbeing, Wolverhampton University, Wolverhampton, UK.
Anhui Medical University · CNCapital Medical University · CNGuangzhou Medical University · CNImperial College Healthcare NHS Trust · GBRoyal Holloway University of London · GBSun Yat-sen University · CNUniversity College London · GBUniversity of Wolverhampton · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesChina carries the greatest burden of stroke given its largest volume of people with hypertension. This study assessed the impacts of suboptimal controls of hypertension on incident stroke and projected the number of patients with stroke saved after the control of blood pressure improved in population.

settingAnhui, China.

participantsWe examined data from the Anhui cohort of 2001-2011, consisting of 3336 participants aged ≥60 years who were randomly recruited from the urban and rural Anhui. 2852 participants (89.2%) had hypertensive status measured and no stroke at baseline, and were followed up until 2011 in three surveys using a standard method of interview.

resultsAt baseline, 1646 participants (57.7%) were identified to have hypertension, among whom 912 (55.4%) were previously undetected, 115 (7.0%) detected but not treated, 452 (27.5%) treated but not controlled and only 127 (7.7%) controlled. During the 10-year follow-up, 211 incident stroke cases (12.8/1000 person-years) occurred. Compared with normotensive individuals at baseline, multivariate adjusted HR for having stroke increased in those with undetected hypertension by 1.63 (95%CI 1.15 to 2.32), untreated by 2.21 (1.26-3.85) and uncontrolled hypertension by 3.34 (2.28-4.88), but did not differ from those with controlled hypertension (1.34; 0.60-2.99). Based on a two-fold increase in the detection and management of current levels of hypertension and algorithms on the current situation in China, approximately 250 000 incident stroke cases could be prevented annually.

conclusionsIn China, hypertension is frequently undetected or inadequately treated. With appropriate management of hypertension, a substantial number of people could be saved form stroke.

Indexed as

AgedAntihypertensive AgentsChinaCohort StudiesDelayed DiagnosisFemaleHumansHypertensionIncidenceLongitudinal StudiesMaleMiddle AgedRisk FactorsStrokeAntihypertensive Agentsblood pressurecardiovascular riskhealth caresocioeconomic status

Identifiers

PMID28993383
PMCPMC5640060
OpenAlexW2764051598

What OpenQuestion holds

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LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.