Evidence map›Paper›PMID 31924637›Full record

ArticleBMJ open2020

A town level comprehensive intervention study to reduce salt intake in China: protocol for a cluster randomised controlled trial.

Jianwei Xu, Biwei Tang, Min Liu, Yamin Bai, Wei Yan, Xue Zhou, Zhihua Xu, Jun He, Donghui Jin, Jixin Sun and 5 more

Open access · goldAbstract readClinical Trial Protocol
In one paragraph

Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 26% 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

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

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. 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

15 authors at 9 institutions in 2 countries.

Jianwei Xu *National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
Biwei Tang *National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.ORCID 0000-0001-6614-9324
Min LiuNational Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
Yamin BaiNational Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
Wei YanJiangxi Provincial Center for Disease Control and Prevention, Nanchang, China.
Xue ZhouHeilongjiang Provincial Center for Disease Control and Prevention, Harbin, China.
Zhihua XuQinghai Provincial Center for Disease Control and Prevention, Xining, China.ORCID 0000-0002-0547-3355
Jun HeSichuan Provincial Center for Disease Control and Prevention, Chengdu, China.
Donghui JinHunan Provincial Center for Disease Control and Prevention, Changsha, China.
Jixin SunHebei Provincial Center for Disease Control and Prevention, Shijiazhuang, China.
Yuan LiPeking University Health Science Centre, The George Institute for Global Health, Beijing, China.
Feng J HeWolfson Institute of Preventive Medicine, Queen Mary University of London, London, UK.
Graham A MacGregorWolfson Institute of Preventive Medicine, Queen Mary University of London, London, UK.
Jing WuNational Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China wujingcdc@163.com zpuhong@georgeinstitute.org.cn.
Puhong ZhangDiabetes Program, The George Institute at Peking University Health Science Center, Beijing, China wujingcdc@163.com zpuhong@georgeinstitute.org.cn.
National Center for Chronic and Noncommunicable Disease Control and Prevention · CNPeking University · CNQueen Mary University of London · GBHebei Provincial Center for Disease Control and Prevention · CNHeilongjiang Center for Tuberculosis Control and Prevention · CNHunan Provincial Center for Disease Control and Prevention · CNNanchang Center for Disease Control and Prevention · CNQinghai Institute for Endemic Diease Prevention and Control · CNSichuan Center for Disease Control and Prevention · CN

Funding

Department of Health 16/136/77Medical Research Council MR/J015903/1
6 · The paper itself

Abstract

introductionSalt intake in China (≈12 g/day) is more than twice the upper limit recommended by the WHO (5 g/day). To reduce salt intake, Action on Salt China (ASC) was launched in 2017. As one of four randomised controlled trials (RCTs) in the ASC programme, a comprehensive intervention study was designed to test whether all the components of the interventions adopted by other RCTs are acceptable, scalable and effective when provided to a region in the real world. METHODS AND ANALYSIS: Using a cluster RCT design, 2688 participants were selected from 48 towns (clusters) in 12 counties in 6 provinces and assigned to the intervention group or the control group. Randomisation was performed after the baseline survey was completed. Information on salt-related knowledge, attitude and practice (KAP), blood pressure and 24-hour urinary sodium were collected. The intervention includes government engagement, health education and other intervention components targeting restaurants, home cooks and primary school students and their families that have been used in other RCTs. The control group will not receive the intervention. The project will be followed up for 2 years, with the intervention being carried out for the first year only. The primary outcome is salt intake measured by 24-hour urinary sodium excretion after 1 year. The secondary outcomes are the long-lasting effectiveness on salt intake and blood pressure measured by the same method, as well as salt-related KAP and blood pressure at the 1-year and 2-year follow-ups. Process evaluation and health economics analysis will be conducted as well. ETHICS AND DISSEMINATION: The study was reviewed and approved by the Institutional Review Board of the National Center for Chronic and Noncommunicable Disease Control and Prevention, the Chinese Center for Disease Control and Prevention, and Queen Mary Research Ethics Committee. Results will be disseminated through presentations, publications and social media. TRIAL REGISTRATION NUMBER: ChiCTR1800018119.

Indexed as

Feeding BehaviorAdolescentAdultAgedBlood PressureChinaCitiesFemaleHealth EducationHumansHypertensionIncidenceMaleMiddle AgedMulticenter Studies as TopicRandomized Controlled Trials as TopicSodium Chloride, Dietaryepidemiologyhypertensionpublic healthstatistics & research methods

Identifiers

PMID31924637
PMCPMC6955555
OpenAlexW2999093722

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.