Publications

2025

Bernstein, Eden Y, Christina X Fu, John Z Ayanian, Vilsa E Curto, Timothy S Anderson, and Bruce E Landon. (2025) 2025. “Association of Medicare Advantage Vs Traditional Medicare With Clinical Outcomes Among Patients Hospitalized for Substance Use Disorders.”. Journal of General Internal Medicine. https://doi.org/10.1007/s11606-025-09413-w.

BACKGROUND: Medicare Advantage (MA) includes incentives to reduce health care spending and insures over half of Medicare eligible adults. Substance use disorders (SUD) are common in this population.

OBJECTIVE: To compare clinical outcomes between MA and traditional Medicare beneficiaries hospitalized with SUD.

DESIGN: Retrospective cohort.

PATIENTS: Medicare beneficiaries hospitalized for alcohol withdrawal or opioid overdose from 2016 to 2021.

MEASURES: Primary outcomes included mortality and all-cause readmissions within 30 days of discharge. Secondary outcomes included use of SUD medications.

RESULTS: Of 104,833 beneficiaries hospitalized for alcohol withdrawal (mean age 62.1 [SD 11.5] years, 71.8% male) and 75,463 hospitalized for opioid overdose (mean age 64.5 [SD 12.5] years, 40.8% male), 36.4% and 37.3% were enrolled in MA, respectively. Adjusted rates of 30-day mortality were lower in MA for alcohol withdrawal (unadjusted 2.5% in MA vs 2.4% in traditional Medicare; adjusted difference -0.27 pp [95% CI -0.47, -0.08]) but similar for opioid overdose (7.8% in MA vs 7.9% in traditional Medicare; adjusted difference -0.13 pp [-0.54, 0.27]). Rates of 30-day readmissions were lower in MA for both alcohol withdrawal (12.3% in MA vs 13.7% in traditional Medicare; adjusted difference -1.01 pp [95% CI -1.44, -0.59]) and opioid overdose (14.8% in MA vs 17.6% in traditional Medicare; adjusted difference -1.93 pp [95% CI -2.49, -1.37]). Enrollment in MA was associated with lower use of medications for alcohol use disorder (unadjusted 9.6% in MA vs 11.3% in traditional Medicare; adjusted difference -1.66 pp [95% CI -2.72, -0.60]) but higher use of medications for opioid use disorder (unadjusted 4.9% in MA vs 4.2% in traditional Medicare; adjusted difference, 0.82 pp [95% CI 0.08, 1.57]).

CONCLUSIONS: Compared to traditional Medicare, MA was associated with modestly lower 30-day mortality after alcohol withdrawal, lower 30-day readmission rates after alcohol withdrawal and opioid overdose hospitalizations, and mixed findings on medication use.

Wilson, Linnea M, Shoshana J Herzig, Edward R Marcantonio, Michael A Steinman, Mara A Schonberg, Brianna X Wang, Ella Hileman-Kaplan, and Timothy S Anderson. (2025) 2025. “Management of Diabetes and Hyperglycemia in the Hospital: A Systematic Review of Clinical Practice Guidelines.”. Diabetes Care 48 (4): 655-64. https://doi.org/10.2337/dc24-2510.

BACKGROUND: Inpatient hyperglycemia is common among adults, and management varies.

PURPOSE: To systematically identify guidelines on inpatient hyperglycemia management.

DATA SOURCES: MEDLINE, Guidelines International Network, and specialty society websites were searched from 1 January 2010 to 14 August 2024.

STUDY SELECTION: Clinical practice guidelines pertaining to blood glucose management in hospitalized adults were included.

DATA EXTRACTION: Two authors screened articles and extracted data, and three assessed guideline quality. Recommendations on inpatient monitoring, treatment targets, medications, and care transitions were collected.

DATA SYNTHESIS: Guidelines from 10 organizations met inclusion criteria, and 5 were assessed to be of high quality per the Appraisal of Guidelines for REsearch & Evaluation II (AGREE II) instrument. All guidelines recommended monitoring blood glucose for patients with diabetes and nine for admission hyperglycemia. Eight guidelines recommended an upper blood glucose target of 180 mg/dL, five with a lower limit of 100 mg/dL and three of 140 mg/dL. Guidelines were in agreement on using capillary blood glucose monitoring, and three guidelines included discussion of continuous monitoring. Hyperglycemia treatment with basal-bolus insulin alone (n = 3) or with correction (n = 5) was most commonly recommended, while sliding scale insulin was advised against (n = 5). Guidance on use of oral diabetes medications was inconsistent. Five guidelines included discussion of transitioning to home medications. Recommendations for hypoglycemia management and diabetes management in older adults were largely limited to outpatient guidance.

LIMITATIONS: Non-English-language guidelines were excluded.

CONCLUSIONS: While there is consensus on inpatient blood glucose monitoring and use of basal-bolus insulin, there is disagreement on treatment targets and use of home medications and little guidance on how to transition treatment at discharge.