The MPoRT model assumes that the proportional hazard of death for smokers is higher than that for non-smokers, and that it varies over time depending on an individuals level and intensity of smoking (heavy smoker, light smoker, former heavy smoker, former light smoker) and time since quitting
Waste Manage 29:11921197 Moroz I, Scapolio LG, Cesarino I, Leo AL, Bonanomi G (2021) Toxicity of cigarette butts and possible recycling solutionsa literature review
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Potentially increasing alcohol use among heavier drinkers can be linked to an elevated risk of complications following a SARS-CoV-2 infection [44], but also to other alcohol-attributable harm, thus, an average decrease of alcohol use does not necessarily imply a lower alcohol-attributable societal burden