Evidence map›Paper›PMID 29903379›Full record

ArticleThe Lancet. Global health2018

Body-mass index, blood pressure, and cause-specific mortality in India: a prospective cohort study of 500 810 adults.

Vendhan Gajalakshmi, Ben Lacey, Vendhan Kanimozhi, Paul Sherliker, Richard Peto, Sarah Lewington

Open access · goldAbstract read
In one paragraph

Article in The Lancet. Global health, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 3 pooled it
15.2field-weighted citation impact, top 1% 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

35 citing papers in PubMed, 3 syntheses or guidelines pooled it, 65 citations in OpenAlex.

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  9. Cohort Profile: Indian Study of Healthy Ageing (ISHA-Barshi).International journal of epidemiology · 2024
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  16. Mortality Associated with AmbientEnvironmental health perspectives · 2022
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Vendhan GajalakshmiEpidemiological Research Centre, Chennai, Tamil Nadu, India. Electronic address: gajaerc@gmail.com.
Ben LaceyClinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK; NIHR Oxford Biomedical Research Centre, Oxford, UK.
Vendhan KanimozhiEpidemiological Research Centre, Chennai, Tamil Nadu, India.
Paul SherlikerMRC Population Health Research Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK.
Richard PetoClinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK.
Sarah LewingtonMRC Population Health Research Unit, Nuffield Department of Population Health, University of Oxford, Oxford, UK; NIHR Oxford Biomedical Research Centre, Oxford, UK.
National Institute of Epidemiology · INOxford BioMedica (United Kingdom) · GBUniversity of Oxford · GB

Funding

Monitoring tobacco mortality in 2M adults in 4 countriesR01TW005993 · FIC · UNIVERSITY OF OXFORD · PI PETO, RICHARD · 2002 to 2004
$300k
British Heart FoundationCancer Research UKFIC NIH HHS R01 TW005993Medical Research Council MC_U137686857Medical Research Council MC_UU_12026/3
6 · The paper itself

Abstract

backgroundThe association between cause-specific mortality and body-mass index (BMI) has been studied mainly in high-income countries. We investigated the relations between BMI, systolic blood pressure, and mortality in India.

methodsMen and women aged 35 years or older were recruited into a prospective study from the general population in Chennai, India between Jan 1, 1998, and Dec 31, 2001. Participants were interviewed (data collected included age, sex, education, socioeconomic status, medical history, tobacco smoking, and alcohol intake) and measured (height, weight, and blood pressure). Deaths were identified by linkage to Chennai city mortality records and through active surveillance by household visits from trained graduate non-medical fieldworkers. After the baseline survey, households were visited once in 2002-05, then biennially until 2015. During these repeat visits, structured narratives of any deaths that took place before March 31, 2015, were recorded for physician coding. During 2013-14, a random sample of participants was also resurveyed as per baseline to assess long-term variability in systolic blood pressure and BMI. Cox regression (standardised for tobacco, alcohol, and social factors) was used to relate mortality rate ratios (RRs) at ages 35-69 years to systolic blood pressure, BMI, or BMI adjusted for usual systolic blood pressure.

findings500 810 participants were recruited. After exclusion of those with chronic disease or incomplete data, 414 746 participants aged 35-69 years (mean 46 [SD 9]; 45% women) remained. At recruitment, mean systolic blood pressure was 127 mm Hg (SD 15), and mean BMI was 23·2 kg/m

interpretationIn this South Asian population, BMI was little associated with vascular mortality, even though increased BMI is associated with increased systolic blood pressure, which in turn is associated with increased vascular mortality. Hence, some close correlates of below-average BMI must have important adverse effects, which could be of relevance in all populations.

fundingUK Medical Research Council, British Heart Foundation, Cancer Research UK.

Indexed as

Blood PressureBody Mass IndexAdultAgedCause of DeathFemaleHumansIndiaMaleMiddle AgedProspective Studies

Identifiers

PMID29903379
PMCPMC6005121
OpenAlexW2808199765

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Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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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.