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Memon AA, Gelman K, Melott J, Billings R, Fullard M, Catiul C, Miocinovic S, Amara AW. A systematic review of health disparities research in deep brain stimulation surgery for Parkinson's disease. Front Hum Neurosci 2023; 17:1269401. [PMID: 37964803 PMCID: PMC10641459 DOI: 10.3389/fnhum.2023.1269401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 10/05/2023] [Indexed: 11/16/2023] Open
Abstract
Background Deep brain stimulation (DBS) is the primary surgical intervention for Parkinson's disease (PD) patients with insufficient response to medication, significantly improving motor symptoms and quality of life. Despite FDA approval for over two decades, access to this therapy remains limited. This systematic review aims to evaluate the influence of gender, race/ethnicity, socioeconomic status, and age on health disparities associated with DBS for PD, providing an overview of current research in this field. Methods A systematic literature search was conducted in PubMed/MEDLINE, Embase, Web of Science and Cochrane databases from 1960 to September 12th, 2023, following Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines. Studies that examine the disparities in accessing DBS among patients with PD were included, comparing different demographic factors. Findings were synthesized and presented narratively to identify and understand DBS disparities. Results After screening for relevance, 25 studies published between 1960 and 2023 were included, with 16 studies meeting full-text review criteria. While reviewing the references of the 16 articles, two additional studies were included, bringing the total number of included studies to 18. Most studies originated from the United States (44%). The identified studies were categorized as identifying disparities, understanding disparities, or reducing disparities. The majority focused on identifying disparities (72%), while fewer studies delved into understanding the underlying factors (28%). No studies evaluated strategies for reducing disparities. The findings indicate that elderly, female, and Black people, as well as those from low socioeconomic backgrounds and developing countries face greater obstacles in accessing DBS for PD. Conclusion This study highlights factors contributing to disparities in DBS utilization for PD, including race, gender, and socioeconomic status. Public health policymakers, practitioners, and clinicians should recognize these inequalities and work toward reducing disparities, particularly among vulnerable populations.
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Affiliation(s)
- Adeel A. Memon
- Department of Neurology, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV, United States
| | - Kate Gelman
- School of Medicine, West Virginia University, Morgantown, WV, United States
| | - Joseph Melott
- School of Medicine, West Virginia University, Morgantown, WV, United States
| | - Rebecca Billings
- UAB Libraries, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Michelle Fullard
- Department of Neurology, University of Colorado, Aurora, CO, United States
| | - Corina Catiul
- Department of Neurology, University of Alabama at Birmingham, Birmingham, AL, United States
| | | | - Amy W. Amara
- Department of Neurology, University of Colorado, Aurora, CO, United States
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Sarica C, Conner CR, Yamamoto K, Yang A, Germann J, Lannon MM, Samuel N, Colditz M, Santyr B, Chow CT, Iorio-Morin C, Aguirre-Padilla DH, Lang ST, Vetkas A, Cheyuo C, Loh A, Darmani G, Flouty O, Milano V, Paff M, Hodaie M, Kalia SK, Munhoz RP, Fasano A, Lozano AM. Trends and disparities in deep brain stimulation utilization in the United States: a Nationwide Inpatient Sample analysis from 1993 to 2017. LANCET REGIONAL HEALTH. AMERICAS 2023; 26:100599. [PMID: 37876670 PMCID: PMC10593574 DOI: 10.1016/j.lana.2023.100599] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/08/2023] [Accepted: 09/08/2023] [Indexed: 10/26/2023]
Abstract
Background Deep brain stimulation (DBS) is an approved treatment option for Parkinson's Disease (PD), essential tremor (ET), dystonia, obsessive-compulsive disorder and epilepsy in the United States. There are disparities in access to DBS, and clear understanding of the contextual factors driving them is important. Previous studies aimed at understanding these factors have been limited by single indications or small cohort sizes. The aim of this study is to provide an updated and comprehensive analysis of DBS utilization for multiple indications to better understand the factors driving disparities in access. Methods The United States based National Inpatient Sample (NIS) database was utilized to analyze the surgical volume and trends of procedures based on indication, using relevant ICD codes. Predictors of DBS use were analyzed using a logistic regression model. DBS-implanted patients in each indication were compared based on the patient-, hospital-, and outcome-related variables. Findings Our analysis of 104,356 DBS discharges from 1993 to 2017 revealed that the most frequent indications for DBS were PD (67%), ET (24%), and dystonia (4%). Although the number of DBS procedures has consistently increased over the years, radiofrequency ablation utilization has significantly decreased to only a few patients per year since 2003. Negative predictors for DBS utilization in PD and ET cohorts included age increase and female sex, while African American status was a negative predictor across all cohorts. Significant differences in patient-, hospital-, and outcome-related variables between DBS indications were also determined. Interpretation Demographic and socioeconomic-based disparities in DBS use are evident. Although racial disparities are present across all indications, other disparities such as age, sex, wealth, and insurance status are only relevant in certain indications. Funding This work was supported by Alan & Susan Hudson Cornerstone Chair in Neurosurgery at University Health Network.
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Affiliation(s)
- Can Sarica
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
- Krembil Research Institute, University Health Network, Toronto, ON, Canada
| | - Christopher R. Conner
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Kazuaki Yamamoto
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Andrew Yang
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Jürgen Germann
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Melissa M. Lannon
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Nardin Samuel
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Michael Colditz
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Brendan Santyr
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Clement T. Chow
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Christian Iorio-Morin
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
- Division of Neurosurgery, Department of Surgery, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - David H. Aguirre-Padilla
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
- Department of Neurosurgery, Medical School, Universidad de Chile, Santiago, Chile
| | - Stefan Thomas Lang
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Artur Vetkas
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
- Department of Neurosurgery, Tartu University Hospital, University of Tartu, Tartu, Estonia
| | - Cletus Cheyuo
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Aaron Loh
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Ghazaleh Darmani
- Krembil Research Institute, University Health Network, Toronto, ON, Canada
| | - Oliver Flouty
- Department of Neurosurgery, University of South Florida, Tampa, FL, United States
| | - Vanessa Milano
- Department of Neurosurgery, Rutgers New Jersey Medical School, Newark, NJ, United States
| | - Michelle Paff
- Department of Neurosurgery, University of California Irvine, Orange, CA, United States
| | - Mojgan Hodaie
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
- Krembil Research Institute, University Health Network, Toronto, ON, Canada
- CRANIA Center for Advancing Neurotechnological Innovation to Application, University of Toronto, ON, Canada
| | - Suneil K. Kalia
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
- Krembil Research Institute, University Health Network, Toronto, ON, Canada
- CRANIA Center for Advancing Neurotechnological Innovation to Application, University of Toronto, ON, Canada
- KITE, University Health Network, Toronto, ON, Canada
| | - Renato P. Munhoz
- Krembil Research Institute, University Health Network, Toronto, ON, Canada
- Division of Neurology, Edmond J. Safra Program in Parkinson's Disease Morton and Gloria Shulman Movement Disorders Clinic, Toronto Western Hospital, University of Toronto, Toronto, ON, Canada
| | - Alfonso Fasano
- Krembil Research Institute, University Health Network, Toronto, ON, Canada
- CRANIA Center for Advancing Neurotechnological Innovation to Application, University of Toronto, ON, Canada
- KITE, University Health Network, Toronto, ON, Canada
- Division of Neurology, Edmond J. Safra Program in Parkinson's Disease Morton and Gloria Shulman Movement Disorders Clinic, Toronto Western Hospital, University of Toronto, Toronto, ON, Canada
| | - Andres M. Lozano
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
- Krembil Research Institute, University Health Network, Toronto, ON, Canada
- CRANIA Center for Advancing Neurotechnological Innovation to Application, University of Toronto, ON, Canada
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Xu F, Carlson SA, Liu Y, Greenlund KJ. Urban-Rural Differences in Health Care Utilization for Inflammatory Bowel Disease in the USA, 2017. Dig Dis Sci 2022; 67:3601-3611. [PMID: 34633623 PMCID: PMC10478171 DOI: 10.1007/s10620-021-07264-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 09/27/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND Urban-rural differences in IBD-specific health care utilization at the national level have not been examined in the USA. AIMS We compared urban and rural rates of IBD-related office visits and IBD-specific (Crohn's disease (CD) or ulcerative colitis (UC)) hospitalizations and emergency department (ED) visits. METHODS From multiple national data sources, we compared national rates using Z test and compared estimates of patient and hospital characteristics and hospitalization outcomes between urban and rural areas using Chi-square and t tests. RESULTS In 2015 and 2016, digestive disease-related office visit rates, per 100 adults, were 3.1 times higher in urban than in rural areas (8.7 vs 2.8, P < 0.001). In 2017, age-adjusted rates per 100,000 adults were significantly higher in rural than urban areas for CD-specific hospitalizations (26.3 vs 23.6, P = 0.03) and ED visits (49.3 vs 39.5, P = 0.002). Compared with their urban counterparts, rural adults hospitalized for CD or UC in 2017 were more likely to be older and non-Hispanic white, have lower household income, Medicare coverage, and an elective admission, and were discharged from hospitals that were large, non-federal government owned, and in the Midwest or South. There were no significant urban-rural differences in length of stay and 30-day readmission rate. CONCLUSIONS While IBD or digestive disease-related office visit rates were lower in rural compared to urban areas, CD-specific hospitalization and ED visit rates were higher. Strategies that improve office-based care among rural patients with IBD may help to avoid more costly forms of health care use.
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Affiliation(s)
- Fang Xu
- Division of Population Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, 4770 Buford Highway NE, Atlanta, GA, 30341, USA.
| | - Susan A Carlson
- Division of Population Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, 4770 Buford Highway NE, Atlanta, GA, 30341, USA
| | - Yong Liu
- Division of Population Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, 4770 Buford Highway NE, Atlanta, GA, 30341, USA
| | - Kurt J Greenlund
- Division of Population Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, 4770 Buford Highway NE, Atlanta, GA, 30341, USA
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Cramer SW, Do TH, Palzer EF, Naik A, Rice AL, Novy SG, Hanson JT, Piazza AN, Howard MA, Huling JD, Chen CC, McGovern RA. Persistent Racial Disparities in Deep Brain Stimulation for Parkinson's Disease. Ann Neurol 2022; 92:246-254. [PMID: 35439848 PMCID: PMC9546407 DOI: 10.1002/ana.26378] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 04/15/2022] [Accepted: 04/18/2022] [Indexed: 11/16/2022]
Abstract
We sought to determine whether racial and socioeconomic disparities in the utilization of deep brain stimulation (DBS) for Parkinson's disease (PD) have improved over time. We examined DBS utilization and analyzed factors associated with placement of DBS. The odds of DBS placement increased across the study period, whereas White patients with PD were 5 times more likely than Black patients to undergo DBS. Individuals, regardless of racial background, with 2 or more comorbidities were 14 times less likely to undergo DBS. Privately insured patients were 1.6 times more likely to undergo DBS. Despite increasing DBS utilization, significant disparities persist in access to DBS. ANN NEUROL 2022;92:246–254
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Affiliation(s)
- Samuel W Cramer
- Department of Neurosurgery, University of Minnesota, Minneapolis, MN
| | - Truong H Do
- Department of Neurosurgery, University of Minnesota, Minneapolis, MN
| | - Elise F Palzer
- Division of Biostatistics, University of Minnesota School of Public Health, Minneapolis, MN
| | - Anant Naik
- Carle Illinois College of Medicine, University of Illinois Urbana Champaign, Champaign, IL
| | | | | | - Jacob T Hanson
- Department of Neurosurgery, University of Minnesota, Minneapolis, MN
| | | | | | - Jared D Huling
- Division of Biostatistics, University of Minnesota School of Public Health, Minneapolis, MN
| | - Clark C Chen
- Department of Neurosurgery, University of Minnesota, Minneapolis, MN
| | - Robert A McGovern
- Department of Neurosurgery, University of Minnesota, Minneapolis, MN.,Division of Neurosurgery, Minneapolis VA Health Care System, Minneapolis, MN
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