Evidence map›Paper›PMID 32134944›Full record

ArticlePloS one2020

Hypertension, blood pressure control and diabetic retinopathy in a large population-based study.

Lei Liu, Nguyen Duc Quang, Riswana Banu, Himeesh Kumar, Yih-Chung Tham, Ching-Yu Cheng, Tien Yin Wong, Charumathi Sabanayagam

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed, 4 pooled it
6.7field-weighted citation impact, top 2% 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

64 citing papers in PubMed, 4 syntheses or guidelines pooled it, 104 citations in OpenAlex.

  1. Hypertension in Adults With Diabetes in Southeast Asia: A Systematic Review.Journal of clinical hypertension (Greenwich, Conn.) · 2025
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. The Mechanisms of Inflammatory Factors and the Total Load of Cerebral Small Vessel Disease in Diabetic Retinopathy and Cognitive Impairment.Diabetes therapy : research, treatment and education of diabetes and related disorders · 2025
    Article
  17. Article
  18. Article
  19. Article
  20. Article

4 more citing papers are in PubMed but not listed here.

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

8 authors at 3 institutions in 3 countries.

Lei LiuSingapore Eye Research Institute and Singapore National Eye Centre, Singapore, Singapore.
Nguyen Duc QuangSingapore Eye Research Institute and Singapore National Eye Centre, Singapore, Singapore.
Riswana BanuSingapore Eye Research Institute and Singapore National Eye Centre, Singapore, Singapore.
Himeesh KumarAlfred Health, Melbourne, Victoria, Australia.
Yih-Chung ThamSingapore Eye Research Institute and Singapore National Eye Centre, Singapore, Singapore.
Ching-Yu ChengSingapore Eye Research Institute and Singapore National Eye Centre, Singapore, Singapore.
Tien Yin WongSingapore Eye Research Institute and Singapore National Eye Centre, Singapore, Singapore.
Charumathi SabanayagamSingapore Eye Research Institute and Singapore National Eye Centre, Singapore, Singapore.ORCID 0000-0002-4042-4719
Singapore National Eye Center · SGNational University of Singapore · SGAlfred Health · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundClinical trials have shown beneficial effects of blood pressure (BP) control in reducing the risk of diabetic retinopathy (DR). However, association between BP control and DR in population-based studies is not clear. We aimed to examine the association of hypertension and BP control with DR.

methodsWe analysed data from a population-based cross-sectional study of Chinese, Malay and Indians adults with diabetes and hypertension (2004-2011, n = 2189, aged 40-80 years) in Singapore. DR severity was assessed from retinal photographs and graded for any- and vision-threatening DR (VTDR) using the modified Airlie House classification. Hypertension status was classified into (1) good control: on treatment (SBP < 130 and DBP < 80 mm Hg), (2) moderate control: on treatment, with BP levels other than group 1 and 3, (3) poor control: on treatment (SBP ≥140 and DBP ≥ 90 mm Hg), (4) untreated hypertension, any BP level. SBP, DBP and pulse pressure (PP) were analyzed as categories and as continuous variables. The association between BP and DR was assessed using multivariable logistic regression models.

resultsThe prevalence of any-DR and VTDR in the study population was 33.8% and 9.0% respectively. Both poorly controlled and untreated hypertension were significantly associated with any-DR with odds ratio (OR) (95% confidence interval [CI]) of 1.97 (1.39-2.83), and 2.01 [1.34-3.05]. Among BP components, SBP and PP were associated with both any-DR and VTDR with OR (95% CI) of 1.45 (1.28-1.65) and 1.61 (1.41-1.84) for any-DR, and 1.44 (1.19-1.76) and 1.67 (1.37-2.06) for VTDR.

conclusionIn a population-based sample of Asian adults with diabetes and hypertension, treated but poorly controlled as well as untreated hypertension were significantly associated with any-DR. Among the BP components, higher SBP and PP levels were associated with both any-DR and VTDR. Further longitudinal studies are necessary to confirm our findings.

Indexed as

AdultAgedAged, 80 and overAsian PeopleBlood GlucoseBlood PressureBlood Pressure DeterminationCross-Sectional StudiesDiabetes MellitusDiabetic RetinopathyFemaleHumansHypertensionMaleMiddle AgedBlood Glucose

Identifiers

PMID32134944
PMCPMC7058315
OpenAlexW3009372076

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.