Screening problematic use of substances among young subjects attending an emergency department, and subsequent treatment seeking.

Introduction: Young individuals constitute a key population for the screening of problematic use of substances (PUS), but they are not likely to seek support and are hard to reach. Targeted screening programs should thus be developed in the places of care they may attend for other reasons, including emergency departments (EDs). We aimed to explore the factors associated with PUS in young people attending an ED; we measured the subsequent access to addiction care after ED screening.

Methods: This was a prospective interventional single-arm study which included any individual aged between 16 and 25 years who attended the main ED of Lyon, France. Baseline data were sociodemographic characteristics, PUS status using self-report questionnaires and biological measures, level of psychological health, and history of physical/sexual abuse. Quick medical feedback was provided to the individuals presenting a PUS; they were advised to consult an addiction unit, and contacted by phone at three months to ask whether they had sought treatment. Baseline data were used to compare PUS and non-PUS groups using multivariable logistic regressions, to provide adjusted odds ratios (aORs) and 95% confidence intervals (95% CI), with age, sex, employment status, and family environment as the adjustment variables. The characteristics of PUS subjects who subsequently sought treatment were also assessed using bivariable analyses.

Results: In total, 460 participants were included; 320 of whom (69.6%) were presenting current substance use, and 221 (48.0%) with PUS. Compared to non-PUS individuals, PUS ones were more likely to be males (aOR=2.06; 95% CI [1.39-3.07], P<0.001), to be older (per one-year increase: aOR=1.09; 95% CI [1.01-1.17], P<0.05), to have an impaired mental health status (aOR=0.87; 95% CI [0.81-0.94], P<0.001), and to have a history of sexual abuse (aOR=3.33; 95% CI [2.03-5.47], P<0.0001). Only 132 (59.7%) subjects with PUS could be reached by phone at 3 months, among whom only 15 (11.4%) reported having sought treatment. Factors associated with treatment seeking were social isolation (46.7% vs. 19.7%; P=0.019), previous consultation for psychological disorders (93.3% vs. 68.4%; P=0.044), lower mental health score (2.8±1.6 vs. 5.1±2.6; P<0.001), and post-ED hospitalization in a psychiatric unit (73.3% vs. 19.7%; P<0.0001).

Discussion/conclusion: EDs are relevant places to screen PUS in youth, but the level of seeking further treatment needs to be substantially improved. Offering systematic screening during an emergency room visit could allow for more appropriate identification and management of youth with PUS.