4.4 Article

Adverse events among adult Medicaid enrollees with opioid use disorder and substance use disorders

Journal

DRUG AND ALCOHOL DEPENDENCE
Volume 221, Issue -, Pages -

Publisher

ELSEVIER IRELAND LTD
DOI: 10.1016/j.drugalcdep.2021.108555

Keywords

Drug overdose; Medicaid; Opioid use disorder; Polysubstance use; Substance use disorder; Suicidal ideation

Funding

  1. Substance Abuse and Mental Health Servies Administration [HHSS283201200031I/HHSS28342002T]
  2. IBM(R) Watson Health(R)

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Adults with opioid use disorder (OUD) and co-occurring substance use disorders (SUDs) are at increased risk for adverse events, but the specific risks differ depending on the combination of OUD and SUD. It is important to screen for and identify multisubstance use in order to determine the most appropriate course of treatment.
Background: It is common for adults with opioid use disorder (OUD) to misuse additional substances, and these individuals may be particularly at risk for adverse events, including mortality. Less is known about how continued receipt of prescription opioids or risk of adverse events (e.g., suicidality, overdose, poisoning) differs for people with co-occurring OUD and additional substance use disorders (SUDs). Methods: We conducted a retrospective study using IBM? MarketScan? Multi-State Medicaid Database enrollment/claims data. We used logistic regression to measure the association between sample characteristics and our dependent variables. The sample consisted of non-Medicare-eligible adults aged 18?64 years who were continuously enrolled in Medicaid in 2016?2017 with an OUD diagnosis on at least one claim in 2016. Results: Adults with OUD and a co-occurring SUD were more likely than adults with OUD only to have an opioidrelated poisoning event (odds ratio [OR] = 1.488, p = .0052), all-cause poisoning (OR = 1.756, p < .0001), or suicidal ideation (OR = 1.796, p < .0001) but not to receive ongoing opioid prescriptions (OR = 0.973, p = .1626). Adverse events varied by OUD-SUD combination. For example, adults with OUD and cocaine use disorder had the highest odds of all-cause (OR = 2.393, p < .0001) or opioid-related (OR = 1.890, p = .0027) poisoning among those with a drug-specific diagnosis and were most likely to be diagnosed with suicidal ideation (OR = 2.465, p < .0001). Conclusions: This study provides evidence that adults with OUD and a co-occurring additional SUD have increased risk for several adverse events. Multisubstance use should be screened for and identified to determine the most appropriate course of treatment.

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