ArticleInternational journal of epidemiology2013
Exhaled carbon monoxide and its associations with smoking, indoor household air pollution and chronic respiratory diseases among 512,000 Chinese adults.
Article in International journal of epidemiology, 2013. 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.
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Who cites it
35 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- Critical appraisal of interventional clinical trials assessing heated tobacco products: a systematic review.Tobacco control · 2024Pooled it
- Pharmacological interventions on smoking cessation: A systematic review and network meta-analysis.Frontiers in pharmacology · 2022Pooled it
- Understanding the effect of indoor air pollution on pneumonia in children under 5 in low- and middle-income countries: a systematic review of evidence.Environmental science and pollution research international · 2019Pooled it
- Smoking reduction using an electronic nicotine delivery system (ENDS) with nicotine delivery similar to combustible cigarettes.Harm reduction journal · 2024Trial
- Make your own cigarettes: toxicant exposure, smoking topography, and subjective effects.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2014Trial
- Combination Treatment With Varenicline and Nicotine Patch on Smoking Cessation Outcomes in Heavy Drinkers at 26-Week Follow-up.Journal of clinical psychopharmacologyTrial
- Smoking, Exhaled Carbon Monoxide, and Risk of Parkinson Disease.JAMA neurology · 2026Article
- Role of biochemical markers as adjuncts to the Fagerström test in evaluating nicotine dependence: A retrospective observational study.Tobacco prevention & cessation · 2026Article
- CaNO and eCO Might Be Potential Non-Invasive Biomarkers for Disease Severity and Exacerbations in Interstitial Lung Disease.Journal of clinical medicine · 2025Article
- Evaluation of the effects of addiction levels and physical activity capacities of smokers on exhaled carbon monoxide level.Primary health care research & development · 2025Article
- Hypertension and Elevated Pulse Pressure Responsive to Biomass Pollutants Exposures in Young Workers From the Democratic Republic of Congo: A Cross-Sectional Analysis.Journal of the American Heart Association · 2025Article
- Hyperuricemia, gout and the associated comorbidities in China: findings from a prospective study of 0.5 million adults.The Lancet regional health. Western Pacific · 2025Article
- Article
- Airborne Influenza Virus in Daycare Centers.Viruses · 2024Article
- Interplay between oral health and lifestyle factors for cancer risk in rural and urban China: a population-based cohort study.Journal of the National Cancer Center · 2023Article
- Alcohol consumption and risks of more than 200 diseases in Chinese men.Nature medicine · 2023Article
- Exhaled Carbon Monoxide Level and Practices among Tobacco and Nicotine Adult Users in Klang Valley, Malaysia.International journal of environmental research and public health · 2023Article
- Tobacco smoking and risks of more than 470 diseases in China: a prospective cohort study.The Lancet. Public health · 2022Article
- Solid Fuel, Secondhand Smoke, and Lung Cancer Mortality: A Prospective Cohort of 323,794 Chinese Never-Smokers.American journal of respiratory and critical care medicine · 2022Article
- Trends in smoking prevalence in urban and rural China, 2007 to 2018: Findings from 5 consecutive nationally representative cross-sectional surveys.PLoS medicine · 2022Article
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Authors and funding
17 authors.
Funding
Abstract
backgroundExhaled carbon monoxide (COex) level is positively associated with tobacco smoking and exposure to smoke from biomass/coal burning. Relatively little is known about its determinants in China despite the population having a high prevalence of smoking and use of biomass/coal.
methodsThe China Kadoorie Biobank includes 512,000 participants aged 30-79 years recruited from 10 diverse regions. We used linear regression and logistic regression methods to assess the associations of COex level with smoking, exposures to indoor household air pollution and prevalent chronic respiratory conditions among never smokers, both overall and by seasons, regions and smoking status.
resultsThe overall COex level (ppm) was much higher in current smokers than in never smokers (men: 11.5 vs 3.7; women: 9.3 vs 3.2). Among current smokers, it was higher among those who smoked more and inhaled more deeply. Among never smokers, mean COex was positively associated with levels of exposures to passive smoking and to biomass/coal burning, especially in rural areas and during winter. The odds ratios (OR) and 95% confidence interval (CI) of air flow obstruction (FEV1/FVC ratio<0.7) for never smokers with COex at 7-14 and ≥14 ppm, compared with those having COex<7, were 1.38 (1.31-1.45) and 1.65 (1.52-1.80), respectively (Ptrend<0.001). Prevalence of other self-reported chronic respiratory conditions was also higher among people with elevated COex (P<0.05).
conclusionIn adult Chinese, COex can be used as a biomarker for assessing current smoking and overall exposure to indoor household air pollution in combination with questionnaires.
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