Sunday, November 24, 2024
11/24/2024
PROJECT SUMMARY/ABSTRACT Both chronic pain and opioid use disorder (OUD) are linked to opioid-related morbidity and mortality. People with comorbid chronic pain and OUD are vulnerable due to their potential under-treatment of pain and OUD, and elevated risk of adverse outcomes such as transition to illicit drugs and overdose. Despite prominent clinical practice guidelines that emphasize opioid alternatives for pain management, little is known about the use of non- opioid and non-drug pain treatments nationally among chronic pain patients. Even less is known within the context of co-occurring chronic pain and OUD, and racial/ethnic minorities. Using Medicare data, the proposed research aims to: (1) evaluate the relationship between OUD status and type of chronic pain management (prescription opioid, non-opioid medication [e.g., gabapentinoids], or non-drug strategies [e.g., physical therapy), and (2) assess if receipt of non-opioid and non-drug treatments is associated with opioid prescribing and drug- related overdoses and acute care use among patients with and without OUD. Key innovations of the proposed research include its focus on overlapping of chronic pain and OUD, and analysis of newly-available OUD indicators in the Medicare Chronic Condition Data Warehouse. The study will also offer new insight into the use of opioid alternatives and outcomes among disabled and older adults who have a high prevalence of chronic pain, are often prescribed opioids, and have rising OUD and overdose rates. We will analyze a 2016-2018 nationally representative 20% random sample of Medicare beneficiaries using enrollment, inpatient, outpatient, and pharmacy claims data. In Aim 1 the main independent variable is OUD status and the primary outcome is the type of pain treatment received defined as a categorical variable. In a secondary analysis, we will evaluate the intensity of each type of pain treatment as measured by opioid morphine milligram equivalents, and count of prescriptions and visits. In Aim 2, the main independent variable is type of pain treatment and the outcomes are long-term high dose opioid use, drug overdoses, and drug-related hospitalizations and emergency department visits. For each aim, we will assess race and ethnicity as a key potential effect modifier. The expected results are that Black and Hispanic beneficiaries with OUD will be less likely to receive any pain treatment compared to non-Hispanic Whites with or without OUD. We further hypothesize that non-opioid treatment is associated with fewer opioid-related adverse outcomes and lower duration and dose of opioid use. Minorities with OUD will have worse outcomes than Whites. The findings have the potential to identify and help address disparities in chronic pain management by providing evidence to inform the development of future practice guidelines that consider the nuanced challenges faced by marginalized groups such as people with OUD and racial minorities.
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