Evidence map›Paper›PMID 22915665›Full record

ArticleBMJ (Clinical research ed.)2012

Contribution of modifiable risk factors to social inequalities in type 2 diabetes: prospective Whitehall II cohort study.

Silvia Stringhini, Adam G Tabak, Tasnime N Akbaraly, Séverine Sabia, Martin J Shipley, Michael G Marmot, Eric J Brunner, G David Batty, Pascal Bovet, Mika Kivimäki

Abstract read
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Article in BMJ (Clinical research ed.), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

81 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors.

Silvia StringhiniInstitute of Social and Preventive Medicine, Lausanne University Hospital, 1010 Lausanne, Switzerland. silvia.stringhini@chuv.ch
Adam G Tabak
Tasnime N Akbaraly
Séverine Sabia
Martin J Shipley
Michael G Marmot
Eric J Brunner
G David Batty
Pascal Bovet
Mika Kivimäki

Funding

Socioeconomic gradient in CHD in early old ageR01HL036310 · NHLBI · UNIVERSITY OF LONDON · PI KIVIMAKI, MIKA J, MARMOT, MICHAEL G · 1986 to 2012
$3.1M
Health behaviors over the adult lifecourse and cognitive agingR01AG034454 · NIA · UNIVERSITY COLLEGE LONDON · PI KIVIMAKI, MIKA J, SINGH-MANOUX, ARCHANA · 2009 to 2013
$1.5M
British Heart Foundation RG/07/008/23674Medical Research Council G0100222Medical Research Council G0902037Medical Research Council G19/35Medical Research Council G8802774NHLBI NIH HHS R01HL036310NIA NIH HHS R01AG034454Wellcome Trust
6 · The paper itself

Abstract

objectiveTo assess the contribution of modifiable risk factors to social inequalities in the incidence of type 2 diabetes when these factors are measured at study baseline or repeatedly over follow-up and when long term exposure is accounted for.

designProspective cohort study with risk factors (health behaviours (smoking, alcohol consumption, diet, and physical activity), body mass index, and biological risk markers (systolic blood pressure, triglycerides and high density lipoprotein cholesterol)) measured four times and diabetes status assessed seven times between 1991-93 and 2007-09.

settingCivil service departments in London (Whitehall II study).

participants7237 adults without diabetes (mean age 49.4 years; 2196 women).

main outcome measuresIncidence of type 2 diabetes and contribution of risk factors to its association with socioeconomic status.

resultsOver a mean follow-up of 14.2 years, 818 incident cases of diabetes were identified. Participants in the lowest occupational category had a 1.86-fold (hazard ratio 1.86, 95% confidence interval 1.48 to 2.32) greater risk of developing diabetes relative to those in the highest occupational category. Health behaviours and body mass index explained 33% (-1% to 78%) of this socioeconomic differential when risk factors were assessed at study baseline (attenuation of hazard ratio from 1.86 to 1.51), 36% (22% to 66%) when they were assessed repeatedly over the follow-up (attenuated hazard ratio 1.48), and 45% (28% to 75%) when long term exposure over the follow-up was accounted for (attenuated hazard ratio 1.41). With additional adjustment for biological risk markers, a total of 53% (29% to 88%) of the socioeconomic differential was explained (attenuated hazard ratio 1.35, 1.05 to 1.72).

conclusionsModifiable risk factors such as health behaviours and obesity, when measured repeatedly over time, explain almost half of the social inequalities in incidence of type 2 diabetes. This is more than was seen in previous studies based on single measurement of risk factors.

Indexed as

Body Mass IndexHealth BehaviorHealth Status DisparitiesSocial ClassAdultBiomarkersBlood PressureCholesterol, HDLCohort StudiesDiabetes Mellitus, Type 2FemaleFollow-Up StudiesHumansIncidenceLife StyleLondonBiomarkersCholesterol, HDLTriglycerides

Identifiers

PMID22915665
PMCPMC3424226

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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.