RT Journal Article T1 Evolution and characteristics of studies estimating attributable mortality to second-hand smoke: a systematic review A1 López Medina, Diana Carolina A1 Candal Pedreira, Cristina A1 Rey Brandariz, Julia A1 Guerra Tort, Carla A1 García, Guadalupe A1 Martín Gisbert, Lucía A1 Casal Acción, Beatriz A1 Ruano Raviña, Alberto A1 Varela Lema, María Leonor A1 Pérez Ríos, Mónica K1 Myocardial ischemia K1 Passive smoking K1 Heterogeneity K1 Adult K1 Cause of death K1 China K1 Developing countries K1 Medline K1 Tobacco K1 Mortality K1 Lung cancer K1 Cochrane collaboration K1 Consensus K1 Embase K1 Smokers K1 Non-smokers AB BackgroundSeveral studies have estimated the impact of second-hand smoke (SHS) exposure on mortality in the population of different countries. This study aimed to identify and describe studies that have estimated the attributable mortality (AM) associated with SHS exposure in the adult population.MethodsA literature search was conducted in MEDLINE, EMBASE, Cochrane Library and CINAHL databases up to January 2023. Studies that estimated the AM associated with SHS exposure in the adult population and used a prevalence-dependent method were included. The main characteristics of the studies and their results were described.ResultsFifty-three studies were included. Most of them were conducted in North America (n = 13), Europe (n = 14) and China (n = 6) and included lung cancer (n = 46) or ischaemic heart disease (n = 22) as causes of death. There was considerable variety in the population under study regarding the relationship with tobacco: non-smokers (n = 30); never-smokers (n = 9); both non and never-smokers (n = 2); the whole population (n = 1) and not known (n = 11). The age at which AM was estimated also varied between studies, ranging from 15  to 40 years and older.ConclusionsStudies estimating AM associated with SHS exposure are heterogeneous in terms of the causes of death studied, the age at which mortality is attributed, or the population to which mortality referred: consensus should be reached. Despite their importance, studies assessing AM to SHS are infrequent in low- and middle-income countries PB Oxford University Press SN 1101-1262 YR 2024 FD 2024 LK http://hdl.handle.net/10347/33887 UL http://hdl.handle.net/10347/33887 LA eng NO Diana C López-Medina, Cristina Candal-Pedreira, Julia Rey-Brandariz, Carla Guerra-Tort, Guadalupe García, Lucia Martín-Gisbert, Beatriz Casal-Acción, Alberto Ruano-Ravina, Leonor Varela-Lema, Mónica Pérez-Ríos, Evolution and characteristics of studies estimating attributable mortality to second-hand smoke: a systematic review, European Journal of Public Health, 2024;, ckae049, https://doi.org/10.1093/eurpub/ckae049 NO This study has been funded by Instituto de Salud Carlos III (ISCIII) through the Project ‘PI22/00727’ and co-funded by the European Union and a SEPAR grant 2023 ‘Proposal 1426’ DS Minerva RD 26 abr 2026