Evidence map›Paper›PMID 34727876›Full record

ArticleBMC geriatrics2021

Relationship between blood pressure levels and ischemic stroke, myocardial infarction, and mortality in very elderly patients taking antihypertensives: a nationwide population-based cohort study.

Myung-Sun Song, Yeon Joo Choi, Hyunjin Kim, Myung Ji Nam, Chung-Woo Lee, Kyungdo Han, Jin-Hyung Jung, Yong-Gyu Park, Do-Hoon Kim, Joo-Hyun Park

Open access · goldAbstract read
In one paragraph

Article in BMC geriatrics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 20% 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

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

  1. Pooled it
  2. Metabolic syndrome severity and the effects of intensive blood pressure lowering: Results from the STEP randomized trial.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. 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 3 institutions in 1 country.

Myung-Sun SongDepartment of Ophthalmology, College of Medicine, Korea University Anam Hospital, Seoul, Republic of Korea.
Yeon Joo ChoiDepartment of Family Medicine, Korea University Ansan Hospital, Korea University College of Medicine, 123, Jeokgeum-ro, Danwon-gu, Gyeonggi-do, Ansan, Republic of Korea.
Hyunjin KimDepartment of Family Medicine, Korea University Ansan Hospital, Korea University College of Medicine, 123, Jeokgeum-ro, Danwon-gu, Gyeonggi-do, Ansan, Republic of Korea.
Myung Ji NamDepartment of Family Medicine, Korea University Ansan Hospital, Korea University College of Medicine, 123, Jeokgeum-ro, Danwon-gu, Gyeonggi-do, Ansan, Republic of Korea.
Chung-Woo LeeDepartment of Family Medicine, Korea University Ansan Hospital, Korea University College of Medicine, 123, Jeokgeum-ro, Danwon-gu, Gyeonggi-do, Ansan, Republic of Korea.
Kyungdo HanDepartment of Statistics and Actuarial Science, Soongsil University, Seoul, Republic of Korea.
Jin-Hyung JungDepartment of Biostatistics, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Yong-Gyu ParkDepartment of Biostatistics, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
Do-Hoon KimDepartment of Family Medicine, Korea University Ansan Hospital, Korea University College of Medicine, 123, Jeokgeum-ro, Danwon-gu, Gyeonggi-do, Ansan, Republic of Korea. kmcfm@hanmail.net.
Joo-Hyun ParkDepartment of Family Medicine, Korea University Ansan Hospital, Korea University College of Medicine, 123, Jeokgeum-ro, Danwon-gu, Gyeonggi-do, Ansan, Republic of Korea. joohyun_park@naver.com.
Korea University · KRCatholic University of Korea · KRSoongsil University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn the very elderly, "the lower the better" hypothesis has constantly been contradicted by randomized control trials and various cohort studies, but inconsistency in results led to unclear blood pressure treatment targets. This study aimed to assess the relationship between baseline blood pressure (BP) and ischemic stroke, myocardial infarction, and all-cause mortality in very elderly people treated for hypertension.

methodsThis large population-based retrospective cohort study was based on the national claims database of the Korean National Health Insurance System, which covers the entire Korean population. 374,250 participants aged ≥ 75 years taking antihypertensive agents were recruited, excluding patients with a history of previous ischemic stroke or myocardial infarction.

resultsSystolic BP (SBP) followed a J curve for ischemic stroke and a U curve for all-cause mortality, with nadir ranges of 120 to 129 mmHg and 140 to 149 mmHg, respectively. While increasing diastolic BP (DBP) generally resulted in higher HRs for ischemic stroke, HRs for myocardial infarction and all-cause mortality significantly increased only when DBP was ≥ 80 mmHg and ≥ 90 mmHg, respectively. The SBP/DBP combination analysis showed that even with SBP < 130 mmHg, higher DBP ≥ 90 mmHg had higher HRs for all three outcomes compared to the reference group (130 to 149 / < 80 mmHg).

conclusionsThere were no further benefits or even harm below certain BP levels for ischemic stroke, myocardial infarction, and all-cause mortality in very elderly hypertensive patients.

Indexed as

Brain IschemiaIschemic StrokeMyocardial InfarctionStrokeAgedAntihypertensive AgentsBlood PressureCohort StudiesHumansRetrospective StudiesRisk FactorsAntihypertensive AgentsBlood pressureElderlyHypertensionIschemic strokeMortalityMyocardial infarction

Identifiers

PMID34727876
PMCPMC8561930
OpenAlexW3208824156

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.