TY - JOUR T1 - Passive smoking in relation to lung cancer incidence and histologic types in Norwegian adults: the HUNT study JF - European Respiratory Journal JO - Eur Respir J DO - 10.1183/13993003.00824-2017 VL - 50 IS - 4 SP - 1700824 AU - Yi-Qian Sun AU - Yue Chen AU - Arnulf Langhammer AU - Frank Skorpen AU - Chunsen Wu AU - Xiao-Mei Mai Y1 - 2017/10/01 UR - http://erj.ersjournals.com/content/50/4/1700824.abstract N2 - Passive smoking has been proposed as a risk factor for lung cancer. The increased risks for lung cancer overall and different histologic types in relation to passive smoking were demonstrated in two meta-analytical studies [1, 2], in which the included studies were mostly case–control designs, which are subject to recall bias. To date, there have been a limited number of prospective studies on passive smoking in relation to lung cancer incidence, most of which included only never-smoking women [3–5]. There is also a lack of longitudinal investigations concerning the influence of passive smoking on different histologic types of lung cancer. We aimed to evaluate the influences of passive smoking during childhood and adulthood on the development of lung cancer and histologic types in a long-term follow-up cohort, and to assess possible sex-related differences in the association.Childhood and adulthood exposure to passive smoking associated with increased risk of lung cancer http://ow.ly/7kXN30f6aZuThe Nord-Trøndelag Health Survey (HUNT) is a collaboration between the HUNT Research Centre (Faculty of Medicine and Health Sciences, NTNU, Norwegian University of Science and Technology), the Nord-Trøndelag County Council and the Norwegian Institute of Public Health.Author contributions: YQS, AL, YC and XMM contributed to the study design. XMM and AL contributed to data collection. CW contributed to statistical analyses. YQS conducted statistical analyses, interpreted results and wrote the initial draft of the manuscript. AL, FS, CW, YC and XMM participated in the data interpretation and helped to write the final draft of the manuscript. ER -