Lauren B Gerlach1,2, Julie Strominger3,4, Hyungjin Myra Kim5,4,6, Donovan T Maust3,5,4. 1. Department of Psychiatry, University of Michigan Medical School, Ann Arbor, MI, USA. glauren@med.umich.edu. 2. Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, MI, USA. glauren@med.umich.edu. 3. Department of Psychiatry, University of Michigan Medical School, Ann Arbor, MI, USA. 4. Center for Clinical Management Research, VA Ann Arbor Healthcare System, Ann Arbor, MI, USA. 5. Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, MI, USA. 6. Center for Statistical Consultation and Research, University of Michigan, Ann Arbor, MI, USA.
Abstract
BACKGROUND: Guidelines recommend most benzodiazepine (BZD) treatment be short-term, though chronic BZD use is increasing. OBJECTIVE: Determine the rate of BZD discontinuation among chronic users and identify patient- and provider-level factors associated with discontinuation. DESIGN, SETTING, AND PARTICIPANTS: A retrospective cohort study using nationwide insurance claims data from 2014 to 2016 of US adults ≥ 18 years old with chronic BZD use (i.e., > 120 days) during the baseline year. MAIN OUTCOMES AND MEASURES: The primary outcome was BZD discontinuation among chronic users after 1 year of follow-up. A series of multilevel logistic regression models examined the association of BZD discontinuation with patient and provider characteristics. Covariates included patient sociodemographics, medical and psychiatric comorbidity, co-prescribed opioids and other psychotropics, and characteristics of the prescribed BZD. KEY RESULTS: Of 141,008 chronic BZD users, 13.4% discontinued use after 1 year. Females had lower odds of discontinuation (AOR 0.83, 99% CI 0.79-0.87), while African-American patients had higher odds (AOR 1.12, 99% CI 1.03-1.22). Those prescribed a high-potency BZD had lower odds of discontinuation (AOR 0.51, 99% CI 0.47-0.54), as did those prescribed an opioid (AOR 0.94, 99% CI 0.89-0.99). After adjusting for patient- and provider-level factors, differences between providers accounted for 5.8% of variation in BZD discontinuation (p < 0.001). The median odds ratio for provider was 1.54, an association with discontinuation larger than almost all patient-level clinical variables. CONCLUSIONS: A small minority of patients prescribed chronic BZD in a given year are no longer prescribed BZDs 1 year later. There is significant variation in the likelihood of discontinuation accounted for by non-clinical factors such as race, geography, and a patient's provider, which had a stronger association with the odds of discontinuation than almost every other patient-level variable. Provider-facing elements of interventions to reduce BZD prescribing may be critical.
BACKGROUND: Guidelines recommend most benzodiazepine (BZD) treatment be short-term, though chronic BZD use is increasing. OBJECTIVE: Determine the rate of BZD discontinuation among chronic users and identify patient- and provider-level factors associated with discontinuation. DESIGN, SETTING, AND PARTICIPANTS: A retrospective cohort study using nationwide insurance claims data from 2014 to 2016 of US adults ≥ 18 years old with chronic BZD use (i.e., > 120 days) during the baseline year. MAIN OUTCOMES AND MEASURES: The primary outcome was BZD discontinuation among chronic users after 1 year of follow-up. A series of multilevel logistic regression models examined the association of BZD discontinuation with patient and provider characteristics. Covariates included patient sociodemographics, medical and psychiatric comorbidity, co-prescribed opioids and other psychotropics, and characteristics of the prescribed BZD. KEY RESULTS: Of 141,008 chronic BZD users, 13.4% discontinued use after 1 year. Females had lower odds of discontinuation (AOR 0.83, 99% CI 0.79-0.87), while African-American patients had higher odds (AOR 1.12, 99% CI 1.03-1.22). Those prescribed a high-potency BZD had lower odds of discontinuation (AOR 0.51, 99% CI 0.47-0.54), as did those prescribed an opioid (AOR 0.94, 99% CI 0.89-0.99). After adjusting for patient- and provider-level factors, differences between providers accounted for 5.8% of variation in BZD discontinuation (p < 0.001). The median odds ratio for provider was 1.54, an association with discontinuation larger than almost all patient-level clinical variables. CONCLUSIONS: A small minority of patients prescribed chronic BZD in a given year are no longer prescribed BZDs 1 year later. There is significant variation in the likelihood of discontinuation accounted for by non-clinical factors such as race, geography, and a patient's provider, which had a stronger association with the odds of discontinuation than almost every other patient-level variable. Provider-facing elements of interventions to reduce BZD prescribing may be critical.
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