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Objectives: To identify and value resources required to implement and sustain the Massachusetts model of office-based addiction treatment (MA Model) in the Primary Care Opioid Use Disorders Treatment trial (NCT03407638) using a nurse care manager (NCM) to support medication for opioid use disorder in primary care settings.

Study design: A site-specific microcosting analysis was conducted via activity-based costing. Guided by a structured costing instrument, we conducted semistructured interviews with relevant personnel and assigned nationally representative costs.

Methods: Data came from 6 health care systems. Costs were categorized as fixed start-up, time dependent, or variable and estimated as annual per-clinic and per-patient costs for implementation and sustainment phases.

Results: Mean implementation cost (ie, year 1 fixed start-up, time-dependent, and variable) was $238,888 per clinic ($3185 per patient); each subsequent year cost $229,676 ($3062 per patient), assuming 75 patients per month and 29% new patient case mix. Mean onetime fixed start-up costs were $9212 per clinic and included supplies and training. Time-dependent costs were $70,446 per clinic and included rent and meetings. Variable costs were $159,229 per clinic and included NCMs’ and prescribers’ clinical duties. On average, NCMs spent 1967.6 hours on MA Model-related work per year (26.2 hours per patient). In sensitivity analyses, costs varied drastically with patient caseload, provider mix, and new patient case mix.

Conclusions: Fixed start-up and time-dependent costs were minimal. Variable costs were 66.7% of implementation costs and 69.3% of costs annually afterward. The primary cost driver was NCM time conducting MA Model-related work. The additional value of the model will depend on associated downstream outcomes. These results may be helpful to health care systems considering implementing the MA Model.

Related protocols: CTN-0074

This is the primary outcomes article for CTN-0080-A-2. Introduction: Racial and ethnic inequities persist in medication treatment initiation and adherence for pregnant and postpartum people with opioid use disorder (OUD). Our objective was to understand the experiences of “positive outliers,” specifically pregnant and postpartum people of color with OUD who utilized medication treatment and engaged in a randomized clinical trial for buprenorphine despite historical, cultural, and structural barriers.

Methods: We conducted two sets of semi-structured qualitative interviews. First, trained peers with lived expertise as mothers in recovery interviewed individuals who identified with a non-white race and/or ethnicity and enrolled in the Medication Treatment for OUD in Expectant Mothers (MOMs) trial (NCT03918850). Second, we interviewed principal investigators, clinicians, and research coordinators from the 13 MOMs trial sites. We used an inductive thematic approach informed by the Social Ecological Model of Racism and Anti-Racism. Transcripts were double-coded and reviewed until consensus was reached. Preliminary findings from participant and staff interviews were merged and triangulated with peers to inform theme development.

Results: We completed 17 interviews with MOMs trial participants from 7 sites. Participants identified as Hispanic (29%), Black non-Hispanic (24%), multi-racial Hispanic (18%), multi-racial non-Hispanic (18%), and American Indian, Native Hawaiian, or Pacific Islander (12%). Thirty-two interviews with trial staff were also completed. Three themes emerged: (1) Although some participants expected racist treatment and research exploitation, all participants interviewed reported non-discriminatory, non-judgmental care within the MOMs trial; (2) Compassionate care, frequent, personalized, and integrated encounters, and emotional support helped counteract prior stigmatizing and discriminatory health care interactions, enabling participants of color to feel particularly supported, trusted, and empowered during the MOMs trial; and (3) Despite pervasive cultural stigma around addiction and concerns about taking an investigational drug while pregnant, participants expressed that pregnancy status, care team trust, and transparent communication with MOMs trial staff encouraged medication utilization and adherence.

Conclusion: Facilitators of successful engagement in the MOMs trial and retention in medication treatment among pregnant and postpartum people of color with OUD included non-judgmental care, sustained trust, and frequent contact. Key perinatal OUD clinical interventions and trial improvements include personalized communication and scheduling flexibility to promote engagement of marginalized populations.

Related protocols: CTN-0080-A-2

Importance: Health plan disenrollment may interrupt treatment for opioid use disorder (OUD) and overall care, increasing risk for serious outcomes, including overdose and death. There is limited evidence on the association of disenrollment with all-cause and overdose mortality after initiating medications for OUD (MOUD) treatment.

Objective: To assess the association of health plan disenrollment with all-cause and overdose mortality in patients treated with MOUD.

Design, setting, and participants: This cohort study conducted by the CTN Health Systems Node, included privately and publicly insured patients aged 16 years or older who initiated buprenorphine or naltrexone for OUD treatment between January 1, 2012, and December 31, 2021, at 3 integrated health insurance and care delivery systems in 2 US states. Patients were followed up to 2 years until December 31, 2022. Data were analyzed July 2024 to November 2025.

Exposure: Health plan disenrollment following MOUD initiation.

Main outcomes and measures: All-cause mortality and drug-related and alcohol-related overdose mortality within 2 years of MOUD initiation ascertained from the National Death Index. Survival analyses were adjusted for patient sociodemographic and clinical characteristics.

Results: Among 20,011 patients (mean [SD] age 38.7 [15.1] years; 12 299 males [61.5%]) who were treated for OUD, 6948 (34.7%) experienced disenrollment and 586 (2.9%) died during follow-up. The crude rate was 15.3 (95% CI, 14.1-16.6) per 1000 person-years for all-cause mortality and 6.2 (95% CI, 5.4-7.0) per 1000 person-years for overdose mortality. Ever experiencing disenrollment showed elevated all-cause mortality (17.6 [95% CI, 14.9-20.8] vs 14.7 [95% CI, 13.4-16.1] per 1000 person-years) and overdose mortality (8.9 [95% CI, 7.1-11.3] vs 5.4 [95% CI, 4.7-6.3] per 1000 person-years) relative to remaining enrolled. In adjusted analyses, ever experiencing disenrollment was associated with increased hazards of all-cause (hazard ratio [HR], 1.51; 95% CI, 1.23-1.84) and overdose mortality (HR, 1.56; 95% CI, 1.17-2.09). Compared with remaining enrolled and receiving MOUD treatment, being disenrolled (HR, 4.34; 95% CI, 3.19-5.89) and being enrolled and not receiving MOUD treatment (HR, 4.19; 95% CI, 3.24-5.43) were associated with overall mortality.

Conclusions and relevance: In this cohort study of patients who initiated MOUD, experiencing health plan disenrollment was associated with increased mortality risk compared with remaining enrolled. Strategies are needed to improve continuity of health coverage and mitigate the elevated mortality risk during insurance transitions for patients receiving medications for OUD.

Background and aims: Despite similar substance use levels, Black adults experience greater family, legal, employment and other social-contextual challenges related to recovery than other groups. Substance use treatments that address both substance use and social-contextual factors are uniquely positioned to address these substance-related problems and produce more sustainable improvements in social functioning than treatment as usual (TAU) or behavioral controls (Control). The aim of this study was to evaluate changes in substance-related problems among Black adults, focusing on the comparative effectiveness between social-contextual treatments and TAU/Control.

Design: Individual-level data synthesis based on secondary analysis of Black adults enrolled in the National Institute on Drug Abuse (NIDA) Clinical Trials Network (CTN).

Setting: All data were collected in the primary studies between 2001 and 2008 at clinics across the United States.

Participants: Black adults who reported cocaine and/or opioid use across nine studies within the NIDA CTN. The sample used herein consisted of individuals from five of these studies who provided data on substance-related problems (n=532; mean age=39.34; standard deviation=9.6).

Measurements: There were two treatment conditions: Social-contextual (e.g. Motivational Interviewing, Seeking Safety, STAGE 12) and TAU/Control. Moderated nonlinear factor analysis estimated latent scores for substance-related problems, using subscales from the Addiction Severity Index, while accounting for measurement noninvariance across studies, time and covariates. Linear mixed models estimated latent score differences over time between social-contextual treatments and TAU/Control during treatment and from the end of treatment through 12-month follow-up.

Findings: Both treatment groups improved across substance-related problem areas from baseline to the end-of-treatment (Cohen’s d = -0.10 to d = -0.47), with effects maintained at 12-month follow-up. Although social-contextual treatments did not statistically significantly outperform TAU/Control from baseline to end-of-treatment, they showed greater effects from end of treatment to 12-month follow-up in family/social [Cohen’s d difference ( d) = -0.47, 95% confidence interval (CI) = -0.57 to -0.38], legal ( d = -0.20, 95% CI = -0.31 to -0.10) and psychiatric problems ( d = 0.29, 95% CI = -0.38 to -0.20) than TAU/Control. Sensitivity analyses indicated that Seeking Safety and STAGE 12 predominantly drove post-treatment improvements in family/social problems.

Conclusions: Substance use treatment may yield broader, delayed benefits beyond substance use reduction among Black adults in the United States. Compared with treatment-as-usual, social-contextual treatments can yield more sustainable effects in legal, family and psychiatric areas among Black adults, with interventions such as Seeking Safety and STAGE 12 showing particular benefits in addressing family-related challenges.

Related protocols: CTN-0125

Background and aim: Extended-release injectable naltrexone (XR-Naltrexone) is an effective treatment for opioid use disorder (OUD); however, initiation can be challenging as it requires an opioid-free period. This exploratory analysis examines patient characteristics associated with successful initiation of XR-Naltrexone in the National Drug Abuse Treatment Clinical Trials Network (CTN-0051) Extended-Release Naltrexone versus Buprenorphine for Opioid Treatment (X:BOT) trial.

Methods: Patient demographics and clinical variables associated with successful XR-Naltrexone initiation were examined among 283 participants with OUD randomized to XR-Naltrexone in the X:BOT trial. Variables included severity of opioid use, characteristics of opioid and other substance use, treatment history, psychiatric history, baseline depression, and pain. Logistic regression models were used to estimate the effect of variables on the odds of induction success.

Results: 204 (72%) of 283 participants randomized to receive XR-Naltrexone completed successful induction. Housing status and pain were significantly associated with XR-Naltrexone induction status. Reported homelessness was significantly associated with higher odds of successful XR-Naltrexone induction (OR: 2.31; 95% CI: 1.12, 4.76). Individuals that reported moderate or extreme pain on the EuroQoL had half the odds of successful induction compared to those without pain (OR: 0.49; 95% CI: 0.27, 0.89).

Conclusions: Among patients with OUD initiating treatment on inpatient units, homelessness was associated with greater likelihood of successfully initiating XR-Naltrexone, while chronic pain was associated with lower likelihood of XR-Naltrexone initiation. Future research on XR-Naltrexone initiation should consider tailoring treatment based on housing status and other social determinants, and evaluation and management of pain.

Related protocols: CTN-0051

Background and aims: Sleep disruptions increase the risk of substance misuse. Substance use-especially stimulants-can increase acute and chronic sleep dysfunction. This study aimed to estimate the associations between sleep disturbance and stimulant use over time among participants with stimulant use disorder (StUD).

Design: In this secondary analysis, a Random Intercept Cross-Lagged Panel Model (RI-CLPM) was used to assess sleep disturbance and stimulant use over 8 weeks among participants with StUD.

Setting: United States of America.

Participants: The analysis included 793 participants with StUD enrolled across 3 randomized controlled trials in the National Institute on Drug Abuse’s Clinical Trials Network (CTN): CTN-0037, CTN-0048 and CTN-0068.

Measurements: Self-reported sleep disturbance was harmonized as a binary indicator across trial measures at each week. Stimulant use days per week were captured by Timeline Follow Back. Baseline covariates included age, sex, race/ethnicity, employment status, presence of depressive symptoms, any psychiatric history, treatment arm and trial.

Findings: Sleep disturbance was associated with a higher average number of stimulant use days the following week [β = 0.15, 95% confidence interval (CI) = 0.09, 0.22, P < 0.001], and greater stimulant use was linked to increased odds of subsequent sleep disturbance (odds ratio = 1.20, 95% CI = 1.14, 1.26, P < 0.001).

Conclusions: Higher-than-usual stimulant use appears to be associated with increased likelihood of sleep disturbance the following week, and vice versa.

Related protocols: CTN-0037, CTN-0048, CTN-0068

Background: Opioid use disorder (OUD) remains a significant public health issue. Yet, few primary care clinicians (PCCs) screen for, diagnose, or treat OUD. Clinical decision support tools (CDS) integrated into the electronic health record improve process and outcome measures across a variety of conditions. We evaluated PCC perspectives on an OUD CDS tool (Opioid Wizard) deployed through a clinic-randomized trial.

Methods: This is a secondary analysis of CTN-0095, a trial evaluating the effectiveness of Opioid Wizard on OUD process and outcome measures. In short, 92 primary care clinics across three health systems were randomized to Opioid Wizard or usual care. PCCs completed online surveys pre- and 9-month post-Opioid Wizard’s go-live date. Survey items measured PCC self-reports on their confidence and ability to manage OUD, and for PCCs in Opioid Wizard clinics, perceptions about the tool. Generalized linear mixed models with Poisson distribution estimated change in survey response from baseline to follow-up within each treatment group (risk ratios) and in intervention relative to control clinics (ratio of risk ratios).

Results: 361 PCCs (n = 180 Opioid Wizard, n = 181 usual care, 63% female) answered at least one survey. Confidence in screening (RR 1.32, 95% CI 1.07, 1.62), diagnosing (RR 1.24, 95% CI 1.02, 1.50), and referring (RR 1.17, 95% CI 1.02, 1.34) patients for OUD care significantly increased in Opioid Wizard clinics only. Confidence in treating OUD with buprenorphine did not increase in either setting. Of 55 PCCs who used Opioid Wizard at least once, 80% agreed Opioid Wizard made tasks easier and 70% agreed using Opioid Wizard was time “well spent,” but only 44% were likely to recommend it to colleagues.

Conclusion: Opioid Wizard increased PCC confidence across a variety of OUD care measures yet enthusiasm for and use of the tool was limited. Efforts to increase Opioid Wizard use may improve OUD care measures.

Related protocols: CTN-0095

Objective: Identify sociodemographic and substance use characteristics associated with pregnancy intention and explore the relationship between pregnancy intent and postpartum contraception interest among pregnant individuals with opioid use disorder (OUD).

Methods: Secondary analysis of baseline data collected in the Medication Treatment for OUD in Expectant Mothers trial (CTN-0080), which evaluated injectable versus sublingual buprenorphine. Current pregnancy intention was classified as “intended,” “mistimed,” “unwanted,” or “ambivalent.” Postpartum contraceptive interest was categorized into highly effective, effective, less effective, or none. Participant characteristics and contraceptive interest was compared across intention categories using Fisher’s Exact and Kruskal-Wallis tests.

Results: Of 155 participants who completed baseline screening, 137 (88%) did not report any contraceptive use prior to their current pregnancy. Twenty-eight percent reported intended pregnancies, 27% mistimed, 15% never wanted, and 30% were ambivalent towards their current pregnancy. Individuals reporting intended pregnancies disclosed less substance use in the past ninety days and twelve months compared to other categories. Forty-seven percent of participants desired highly effective contraception after delivery, 28% desired effective contraception, 4% desired less effective contraception, and 21% did not desire any contraception. Participants reporting an unwanted pregnancy were significantly more interested in sterilization, while participants reporting a mistimed pregnancy were significantly more interested in a postpartum long-acting reversible contraception.

Conclusions: Our findings that individuals with intended pregnancies report less recent substance use suggests that reproductive health decision-making may be difficult to prioritize during periods of active addiction. In addition, the lack of association between pregnancy intention and postpartum contraceptive interest underscores a need for novel ways to support perinatal individuals with OUD in family planning conversations that honor their reproductive autonomy, values, and desires.

Related protocols: CTN-0080

Introduction:
Primary care patients with opioid use disorder (OUD) may receive treatment in primary care clinics or co-located specialty addiction treatment models. To help guide operational leaders in organizing OUD care delivery systems, we described rates of OUD medication treatment among primary care patients in PRimary care Opioid Use Disorders treatment (PROUD, CTN-0074) trial intervention clinics and four primary care clinics not in the trial because they already had OUD treatment programs in place (exemplar clinics).

Methods:
Primary care patients seen at six PROUD trial intervention clinics that implemented the Massachusetts model of office-based addiction treatment (PROUD clinics) and four exemplar clinics (two co-located specialty models; two primary care models with universal prescribing, in which all primary care providers were expected to treat OUD) were compared. Primary outcomes were person-years (PY) of medication treatment for OUD with buprenorphine or extended-release naltrexone during follow up (3/2018–2/2020) and changes from baseline (3/2016–2/2018).

Results:
Baseline primary care samples included 109,196 patients in PROUD clinics and 101,631 patients in exemplar clinics. Baseline OUD treatment rates varied across exemplar clinics (range: 10.9 to 328.7 PY per 10,000 primary care patients) but were higher than in PROUD clinics at baseline (3.9 PY per 10,000), with exemplar clinics with primary care models (established 2005 and 2017) providing the highest treatment rates to their primary care patients. During follow-up, PROUD clinics nearly tripled treatment, to 14.4 PY per 10,000, whereas most exemplar clinics increased treatment by less than 10% but still had higher treatment rates (range: 12.0 to 359.4 PY per 10,000).

Conclusions:
Primary care OUD treatment rates varied markedly. Exemplar clinics in which all primary care providers were expected to treat OUD had the highest treatment rates at baseline and follow-up, suggesting that universal prescribing is a promising approach to increasing OUD treatment in primary care.

Related protocols: CTN-0074

Background: Opioid use disorder (OUD) during pregnancy is a leading contributor to peripartum morbidity and mortality, with overdose deaths rising significantly in recent years. Despite the identification of various factors associated with overdose events, including social, demographic, psychiatric, and neonatal outcomes, the relative contributions of these factors to peripartum overdose history (or lack thereof) remain unclear. Thus, this study aims to characterize factors associated with lifetime opioid-involved overdose events among currently pregnant individuals receiving buprenorphine (BUP) treatment for OUD.

Methods: Treatment-seeking pregnant individuals with an estimated gestational age of 6 to 30 weeks were enrolled in a large multisite randomized controlled trial evaluating 2 BUP formulations for OUD. Participant baseline demographic, substance use, and mental health data were collected using validated measures, and random forest modeling identified key factors associated with lifetime opioid overdose events.

Results: The 140 pregnant participants (Mage = 31.2 years, SD = 4.7; 87.1% White) reported an average of 8.7 years (SD = 5.8) of opioid use, with 92.1% endorsing lifetime prescription opioid use and 82.9% reporting heroin use. The average lifetime number of nonfatal opioid overdose events was 4.8 (SD = 12.1); an overdose was reported by 55% of the sample (n = 77). Random forest analysis (area under the receiver operating characteristic curve = 0.797) incorporating sociodemographic, substance use, and mental health characteristics found that the most important factors associated with lifetime overdose events were, in order, lifetime heroin use, trauma exposure, reliance on partners or parents for financial support, depressive symptoms, and lifetime cocaine use.

Conclusions: These findings underscore the critical need to address substance use, co-occurring mental health, and socioeconomic challenges that are associated with previous opioid overdose. Identifying and targeting key modifiable overdose risk factors can inform the development of tailored interventions to improve outcomes for this population.

Related protocols: CTN-0080

Introduction: Cigarette smoking rates among pregnant women with opioid use disorder (OUD), are significantly higher than those found in the general population.

Methods: We conducted a secondary analysis of baseline data from a multisite, randomized clinical trial comparing two different buprenorphine formulations on outcomes during pregnancy. Cigarette use and smoking cessation goals were evaluated with the Fagerström Test for Nicotine Dependence and the Thoughts About Abstinence (TAA) questionnaire respectively. Factors associated with differences in cigarette use and smoking cessation goals were compared.

Results: Among 156 participants, 85 (54.5 %) reported that they currently smoked cigarettes. Most participants had a desire to quit smoking (TAA score = 6), but they had low expectations of success (TAA score = 4) and a relatively high perceived difficulty (TAA score = 6.5) of quitting during pregnancy. Among participants who smoked, less than half (45.5 %) had a smoking cessation goal. Participants who had a smoking cessation goal were significantly more likely to have a stronger desire to quit and higher expectations of success in quitting than participants who did not have a goal.

Conclusions: Many pregnant women with OUD would like to quit or reduce smoking during pregnancy. A combination of pharmacologic and non-pharmacologic interventions to reduce or eliminate cigarette use should be incorporated into obstetric and substance use treatment clinical settings. Smoking cessation interventions should be aligned with patients’ goals and preferences.

Related protocols: CTN-0080

Background: Patient-perceived Quality-of-Life (QOL) and treatment effectiveness (TEA) have previously been shown to be positively associated with better substance use treatment outcomes.

Objectives: This study examined potentially causal relationships amongst QOL, TEA, and cocaine abstinence.

Methods: Secondary data analyses (CTN-0148) were conducted on the NIDA Clinical Trial Network study, Cocaine Use Reduction with Buprenorphine (CTN-0048). N = 301 participants with DSM-IV cocaine dependence and opioid use history were administered injectable naltrexone and randomized to one of three buprenorphine/naloxone doses, 4 mg/1 mg, 16 mg/4 mg or placebo. Mediation models estimated direct and indirect effects amongst QOL, TEA, and cocaine abstinence.

Results: The QOL Environment domain exerted a significant indirect effect (B=0.01, SE=0.01, 95% CI=[0.00, 0.02]) on cocaine abstinence and a direct effect on TEA (B=0.57, SE=0.22, 95% CI=[0.16, 1.01]). Other QOL domains and individual QOL items exerted no statistically significant direct effects on cocaine abstinence. Overall QOL exerted a significant direct effect on TEA (95% CI=[0.32, 2.45]) along with a significant indirect effect on cocaine abstinence (95% CI=[0.01, 0.05]). TEA had a significant positive direct effect on cocaine abstinence (95% CI=[0.01, 0.02]).

Conclusion: Overall QOL and environmental QOL are related to treatment response through their relationship with patients’ perception of treatment effectiveness. TEA is directly related to cocaine abstinence at the end of treatment. QOL and TEA measures may serve as indicators of a need for additional support within care plans. These findings highlight the impact of a patient’s sense of well-being and their perceived treatment effectiveness on biochemically validated cocaine abstinence.

Related protocols: CTN-0148

The COVID-19 pandemic exacerbated health challenges among people who use opioids (PWUO) and substance using men who have sex with men (SU-MSM) in Southeastern United States cities. Within the larger NIDA Clinical Trials Network Protocol 0082 PrEP attitudes and opioid use services implementation survey, N=171 PWUO and N=169 SU-MSM answered a COVID-19 vaccine attitudes survey, including measures of vaccine willingness and health beliefs. In mixed-effects linear models for PWUO and SU-MSM, respectively: (1) belief in vaccine protection from illness was positively correlated with vaccine willingness; and (2) sense of being “a guinea pig” was negatively correlated with vaccine willingness. Having previously used a COVID-19 antigen test was positively correlated with vaccine willingness in SU-MSM. This study aims to define vaccine willingness during the COVID-19 pandemic among people who use drugs and proposes the use of the Health Belief Model to conceptualize the correlation between health beliefs and intended behaviors.

Related protocols: CTN-0082

This study applied the Theory of Reasoned Action (TRA) and Theory of Planned Behavior (TPB) to assess predictors of willingness to use three medications (methadone, buprenorphine, naltrexone) for opioid use disorder (MOUD), among people who use opioids (PWUOs). A single assessment survey, with measures aligned to the TRA/TPB were administered to 235, majority male, predominately White, PWUOs attending syringe services programs (SSPs) in the Southeastern United States, administered as part of CTN-0082. Hierarchical multiple regressions were used to analyze predictors of willingness to take each type of MOUD.

Conclusions: Findings partially supported the TRA but not TPB, with positive attitudes associated with greater willingness to use all three types of MOUD: pinpointing to the value of SSPs as a low threshold hub for treatment engagement.

Related protocols: CTN-0082

Introduction: Given the continued rise in opioid exposed pregnancies and overdose during the postnatal period, it is critical to identify risk characteristics among this population to enable clinicians to better tailor interventions. This exploratory study sought to develop a deeper understanding of overdose risk characteristics among pregnant people with opioid use disorder and which characteristics may contribute to differing risk profiles.

Methods: Design and participants. This exploratory secondary analysis utilized baseline data from a large-scale national multi-site randomized controlled trial that compared two buprenorphine formulations among treatment seeking pregnant individuals with opioid use disorder.

Assessments: For risk group identification, the Personal Opioid-Overdose Risk Survey was used. Trauma history experience was assessed using the Trauma History Screen and substance use history was captured using the DSM-5 Checklist and Treatment Services Review V6.

Analyses: Latent class analysis identified unique subgroups of participants based on overdose risk factors. Latent class group membership was associated with trauma history and substance use characteristics using logistic and stepwise logistic regression.

Results: Three distinct classes of overdose risk emerged: the tolerance and polysubstance/alcohol use (HIGH-ALC) class (n = 14, 10 %), synthetic opioid and polysubstance use (LOW-ALC/FENT) class (n = 65, 46.4 %), and the low risk (LOW-RISK) class (n = 61, 43.6 %). The HIGH-ALC class reported the most (non-opioid) substance use in the last 12 months with 6 times higher odds of marijuana use (95 % CI, 1.01-35.67) and 17.48 times higher odds of cocaine use (95 % CI, 3.45-88.48) compared to the LOW-RISK class. The LOW-ALC/FENT class (n = 65, 46.4 %) had the highest reports of childhood physical abuse, greater odds of experiencing intimate partner violence regarding recovery (OR = 4.82, 95 % CI = 1.90-12.26), and greater odds of a threat to safe living (OR = 3.35, 95 % CI = 0.72-15.66). The LOW-RISK class (n = 61, 43.6 %) had the lowest reports of polysubstance use in the last 12 months and the least reports of both childhood sexual trauma and adulthood sexual trauma.

Conclusions: Through better understanding distinct patient overdose risk profiles, healthcare providers can deliver more targeted prevention interventions to address individual needs and improve maternal outcomes.

Related protocols: CTN-0080