“…Research suggests that a range of influences shape the initiation of injection drug use, including age, gender, socio-economic position and structural shifts (Guise, Horyniak, Melo, McNeill, & Werb, 2017; Harocopos, Goldsamt, Kobrak, Jost, & Clatts, 2009; Syvertsen, Paquette, & Pollini, 2017). Injection drug use initiation has also been linked to a range of meanings and experiences for individuals, including cost-efficacy, pleasure and belonging (Guise et al, 2017).…”