Evidence map›Paper›PMID 34137153›Full record

ArticleJournal of clinical hypertension (Greenwich, Conn.)2021

Prognostic value of nocturnal blood pressure dipping on cardiovascular outcomes in Chinese patients with hypertension in primary care.

Ling Lo, Sandra W S Hung, Sara S W Chan, Chui-Ling Mak, Pang-Fai Chan, David V K Chao

Open access · diamondAbstract read
In one paragraph

Article in Journal of clinical hypertension (Greenwich, Conn.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
3.3field-weighted citation impact, top 7% 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

14 citing papers in PubMed, 30 citations in OpenAlex.

  1. Cardio-Ankle Vascular Index and left ventricular mass as markers of nocturnal blood pressure fall in the general population.Clinical research in cardiology : official journal of the German Cardiac Society · 2026
    Article
  2. Exploring the Linear and Non-linear Association Between BMI and Night-Time Blood Pressure Variability.High blood pressure & cardiovascular prevention : the official journal of the Italian Society of Hypertension · 2026
    Article
  3. Review
  4. Article
  5. Observational
  6. Article
  7. Article
  8. Hypertension in Wilms tumor.Pediatric nephrology (Berlin, Germany) · 2024
    Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Prognostic value of nondipping: Are there ethnic differences?Journal of clinical hypertension (Greenwich, Conn.) · 2021
    Article
  14. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Ling LoDepartment of Family Medicine and Primary Health Care, Kowloon East Cluster, Hospital Authority, Hong Kong, China.
Sandra W S HungDepartment of Family Medicine and Primary Health Care, Kowloon East Cluster, Hospital Authority, Hong Kong, China.
Sara S W ChanDepartment of Family Medicine and Primary Health Care, Kowloon East Cluster, Hospital Authority, Hong Kong, China.
Chui-Ling MakDepartment of Family Medicine and Primary Health Care, Kowloon East Cluster, Hospital Authority, Hong Kong, China.
Pang-Fai ChanDepartment of Family Medicine and Primary Health Care, Kowloon East Cluster, Hospital Authority, Hong Kong, China.
David V K ChaoDepartment of Family Medicine and Primary Health Care, Kowloon East Cluster, Hospital Authority, Hong Kong, China.
Hospital Authority · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Meta-analyses showed that non-dipping of nocturnal blood pressure on ambulatory blood pressure monitoring (ABPM) was associated with adverse cardiovascular prognosis. However, these prognostic studies were mainly conducted in Caucasian and Japanese populations. Whether this association applies to Chinese patients remained uninvestigated. A total of 1199 Chinese patients with hypertension undergoing ABPM between January 2012 and December 2014 were recruited retrospectively from five public hypertension referral clinics in Hong Kong. Patients were followed up for a mean 6.42 years for cardiovascular morbidity and mortality and all-cause mortality. Time to event of different dipping patterns was compared by Kaplan-Meier curves. Hazard ratios (HR) were obtained by Cox proportional hazard models with patient demographics and confounding factors adjusted in multivariate regression. A total of 163 end point events occurred in the period. Normal dipping was observed in 446 patients (37.2%), non-dipping in 490 (40.9%), reverse dipping in 161 (13.4%), and extreme dipping in 102 (8.5%). Kaplan-Meier analyses showed inferior survival in non-dippers and reverse dippers for total cardiovascular events and coronary events but not cerebrovascular events. After adjusting for confounding factors, Cox regressions showed HRs 1.166 (CI 0.770-1.764) and 1.173 (CI 0.681-2.021) in non-dippers and reverse dippers for total cardiovascular events, and HRs 1.320 (CI 0.814-2.141) and 1.476 (CI 0.783-2.784) for coronary events. Nocturnal blood pressure non-dipping, and to a greater extent reverse dipping, demonstrated adverse cardiovascular prognosis in a cohort of Chinese patients with hypertension in Hong Kong. Further focused studies on cerebrovascular events and reverse dippers were warranted to refine risk stratification.

Indexed as

Cardiovascular DiseasesHypertensionBlood PressureBlood Pressure Monitoring, AmbulatoryChinaCircadian RhythmHumansPrimary Health CarePrognosisRetrospective Studiesambulatory blood pressure monitoringChinesehypertensionprimary careprognosis

Identifiers

PMID34137153
PMCPMC8678766
OpenAlexW3170378739

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.