Chronic disease and recent addiction treatment utilization among alcohol and drug dependent adults

Maternal Chronic Physical Conditions and Alcohol and Substance Use Disorders in the Preconception and Perinatal Periods

Background: Chronic physical conditions (CPC) and alcohol and substance use disorders (SUD) frequently co-occur, but this has not been examined perinatally. We explored the combined effects of CPC and prepregnancy SUD on perinatal SUD-related adverse events and outpatient care. Materials and methods: This population-based study comprised 77,474 people with and 664,751 without CPC with a birth in Ontario, Canada, 2013-2020. We measured the prevalence of prepregnancy SUD in both groups. We then calculated adjusted relative risks (aRR) of: (1) SUD-related adverse events (toxicity resulting in acute care use/death, or other SUD-related acute care use) and (2) outpatient care for SUD between conception and 365 days postpartum, comparing individuals with prepregnancy CPC and SUD (CPC + SUD), and those with CPC or SUD alone, to those with neither condition. Finally, adjusted relative excess risk due to interaction (aRERI) was calculated to quantify excess risk of the outcomes associated with CPC + SUD, wherein RERI > 0 indicated positive interaction. Results: aRRs of perinatal SUD-related adverse events were 26.79 (95% confidence interval [CI]: 23.12, 31.04) for people with CPC + SUD, 22.09 (95% CI: 19.59, 24.91) for SUD alone, and 2.01 (95% CI: 1.78, 2.27) for CPC alone-each relative to neither condition. There was evidence of positive interaction for CPC + SUD (aRERI: 3.69, 95% CI: 1.13, 6.46). Similar elevated aRRs were observed for perinatal outpatient care for SUD, but without a positive interaction for people with CPC + SUD. Conclusion: As people with both CPC and SUD have the highest risk of perinatal SUD-related adversity, they may need greater preconception and perinatal support.

Chronic Disease and Chemical Dependency Treatment in Primary Care Patients With Problem Drug Use

This article examines whether chronic disease is associated with chemical dependency treatment in primary care patients with problem drug use. Chronic disease was common in 781 disadvantaged individuals who had problem drug use and were seen in primary care clinics affiliated with a public safety-net hospital. Individuals had, on average, 5.4 chronic medical conditions, and overall 57% had low severity chronic disease. In the year following enrollment, 14% had chemical dependency treatment. Severity of chronic disease was not associated with chemical dependency treatment (p = .26). In summary, chronic disease neither hindered chemical dependency treatment, nor did it facilitate such treatment.

Factors associated with high use of general practitioner and psychiatrist services among patients attending an addiction rehabilitation center

BACKGROUND

This study aimed to 1) identify the characteristics of individuals with substance use disorders (SUDs) who make high use of services provided by general practitioners (GP) and psychiatrists while receiving services concurrently from an addiction rehabilitation center (ARC), and 2) to compare high service users to moderate and low service users.

METHODS

Data were compiled for 4,407 individuals with SUDs who were receiving services from an ARC in 2004. The data came from the merging of four databases: the ARC data registry (January 1(st), 2004-December 31, 2004), the Quebec Health Insurance Board database (March 31, 2003-April 1st, 2005), the Quebec provincial database for hospitalizations (March 31, 2003-April 1st, 2005), and the Quebec National Institute of Public Health database (2004). Independent variables were grouped according to the Andersen Behavioral Model of Health Services Use: predisposing, enabling and need factors. Generalized estimating equations analyses were performed to assess the influence of individual and neighborhood-level characteristics on high use of services outside the ARC provided by GPs and psychiatrists. Benjamini-Hochberg's procedure was applied to correct for multiple comparisons.

RESULTS

About 97 % of individuals attending the ARC consulted a GP or a psychiatrist during the two-year study period, for a mean of 1.5 consultations per month. Findings revealed that 5 % of the sample made 26 % of all consultations over the two years, and they were defined as high users. No single predisposing factor was associated with high use. One enabling factor significantly increased the risk of being a high user of services from general practitioners and psychiatrists: receiving services at the ARC for three years prior to 2004. Four needs factors, all related to mental health diagnoses (schizophrenia, mood disorder, anxiety disorder, personality disorder), predicted high use of general practitioner and psychiatrist services.

CONCLUSIONS

This study found that nearly all individuals with SUDs receiving services from an ARC were users of health services from GPs and psychiatrists outside the ARC. High users most probably accessed them in inpatient settings. No previous study has compared high service users with low and moderate users among individuals with SUDs. Considering that ARCs are treating individuals with complex needs, some of whom make high use of medical professionals, both ARCs and their clients could benefit from increased collaboration and integration between the addictions and mental healthcare sectors.

The long-term outcomes of heroin dependent-treatment-resistant patients with bipolar 1 comorbidity after admission to enhanced methadone maintenance

OBJECTIVE

The aim of this study was to compare the long-term outcomes of treatment-resistant bipolar 1 heroin addicts with peers who were without DSM-IV axis I psychiatric comorbidity (dual diagnosis).

METHOD

104 Heroin-dependent patients (TRHD), who also met criteria for treatment resistance - 41 of them with DSM-IV-R criteria for Bipolar 1 Disorder (BIP1-TRHD) and 63 without DSM-IV-R axis I psychiatric comorbidity (NDD-TRHD) - were monitored prospectively (3 years on average, min. 0.5, max. 8) along a Methadone Maintenance Treatment Programme (MMTP).

RESULTS

The rates for survival-in-treatment were 44% for NDD-TRHD patients and 58% for BIP1-TRHD patients (p=0.062). After 3 years of treatment such rates tended to become progressively more stable. BIP1-TRHD patients showed better outcome results than NDD-TRHD patients regarding CGI severity (p<0.001) and DSM-IV GAF (p<0.001). No differences were found regarding urinalyses for morphine between groups during the observational period. Bipolar 1 patients needed a higher methadone dosage in the stabilization phase, but this difference was not statistically significant.

LIMITATIONS

The observational nature of the protocol, the impossibility of evaluating a follow-up in the case of the patients who dropped out, and the multiple interference caused by interindividual variability, the clinical setting and the temporary use of adjunctive medications.

CONCLUSIONS

Contrary to expectations, treatment-resistant patients with bipolar 1 disorder psychiatric comorbidity showed a better long-term outcome than treatment-resistant patients without psychiatric comorbidity.