“…However, little research has been conducted to address this topic in recent years. While harm from others’ illegal drug use has been widely studied in some subgroups of the population, e.g., the consequences of substance use during pregnancy and parental substance use (e.g., Imer, Teasdale, Nielsen, Vedal, & Olofsoson, 2012 ; Nygaard, Slinning, Moe, & Walhovd, 2016 ; Raitasalo, Holmlia, Autti-Rämö, Notkola, & Rapanainen, 2015 ; Reitan, 2018 ), the research addressing self-reported harm from others’ illegal drug use on a population level in the Nordic countries is scarce (but see Melberg et al, 2011 ).…”