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. 2019 Aug 5;19:1042. doi: 10.1186/s12889-019-7390-0

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© The Author(s). 2019

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Hazard ratios and 95% confidence intervals (CI) for CVD/CHD incidence in men, among different smoking groups (Ref: never smoker). Tehran Lipid and Glucose study 1999–2010. Model 1. Adjusted for age. Model 2. Adjusted for age and cardio-metabolic risk factors including: body mass index, systolic blood pressure, diastolic blood pressure, triglyceride levels, cholesterol level and fasting blood sugar. Model 3. Adjusted for age, cardio-metabolic risk factors (as above) and socio-economic features including: education (Ref: college degree), marital status (Ref: married) and occupation (Ref: employed). P. Passive smoker; Ex. Ex-smoker; P.Ex. Passive and Ex-smoker; O. Occasional smoker; D. Daily smoker