Evidence map›Paper›PMID 20478864›Full record

ArticleHeart (British Cardiac Society)2010

Cotinine-assessed second-hand smoke exposure and risk of cardiovascular disease in older adults.

B J Jefferis, D A Lawlor, S Ebrahim, S G Wannamethee, C Feyerabend, M Doig, L McMeekin, D G Cook, P H Whincup

Open access · hybridAbstract readMulticenter Study
In one paragraph

Article in Heart (British Cardiac Society), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 3 pooled it
2.7field-weighted citation impact, top 10% 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

28 citing papers in PubMed, 3 syntheses or guidelines pooled it, 60 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Article
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  15. Temporal trends of phthalate exposures during 2007-2010 in Swedish pregnant women.Journal of exposure science & environmental epidemiology · 2018
    Article
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  19. Observational
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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

9 authors at 4 institutions in 1 country.

B J JefferisUCL Department of Primary Care and Population Health, UCL Medical School, London, UK. b.jefferis@ucl.ac.uk
D A Lawlor
S Ebrahim
S G Wannamethee
C Feyerabend
M Doig
L McMeekin
D G Cook
P H Whincup
St George's, University of London · GBUniversity College London · GBLondon School of Hygiene & Tropical Medicine · GBUniversity of Bristol · GB

Funding

British Heart Foundation RG/08/013/25942Medical Research Council G0600705
6 · The paper itself

Abstract

objectivesTo examine whether second-hand smoke (SHS) exposure measured by serum cotinine is associated with increased coronary heart disease (CHD) and stroke risk among contemporary older British adults.

designProspective population-based study with self-reported medical history and health behaviours. Fasting blood samples were analysed for serum cotinine and cardiovascular disease (CVD) risk markers.

settingPrimary care centres in 25 British towns in 1998-2001. PATIENTS: 8512 60-79-year-old men and women selected from primary care registers.

main outcome measuresFatal and non-fatal myocardial infarction (MI; n=445) and stroke (n=386) during median 7.8-year follow-up. MAIN EXPOSURE: Observational study of serum cotinine assayed from fasting blood sample using liquid chromatography tandem mass spectrometry method, and self-reported smoking history.

resultsAmong 5374 non-smokers without pre-existing CVD, geometric mean cotinine was 0.15 ng/ml (IQR 0.05-0.30). Compared with non-smokers with cotinine < or =0.05 ng/ml, higher cotinine levels (0.06-0.19, 0.2-0.7 and 0.71-15.0 ng/ml) showed little association with MI; adjusted HRs were 0.92 (95% CI 0.63 to 1.35), 1.07 (0.73 to 1.55) and 1.09 (0.69 to 1.72), p(trend)=0.69. Equivalent HRs for stroke were 0.82 (0.55 to 1.23), 0.74 (0.48 to 1.13) and 0.69 (0.41 to 1.17), p(trend)=0.065. The adjustment for sociodemographic, behavioural and CVD risk factors had little effect on the results. The HR of MI for smokers (1-9 cigarettes/day) compared with non-smokers with cotinine < or =0.05 ng/ml was 2.14 (1.39 to 3.52) and 1.03 (0.52 to 2.04) for stroke.

conclusionsIn contemporary older men and women, SHS exposure (predominantly at low levels) was not related to CHD or stroke risks, but we cannot rule out the possibility of modest effects at higher exposure levels.

Indexed as

AgedBiomarkersCotinineEpidemiologic MethodsFemaleHumansMaleMiddle AgedMyocardial InfarctionStrokeTobacco Smoke PollutionBiomarkersCotinineTobacco Smoke Pollution

Identifiers

PMID20478864
PMCPMC2921288
OpenAlexW2131805630

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.