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  1. Article ; Online: Diversity in randomized clinical trials for peripheral artery disease: a systematic review.

    Long, Chandler / Williams, Abimbola O / McGovern, Alysha M / Jacobsen, Caroline M / Hargens, Liesl M / Duval, Sue / Jaff, Michael R

    International journal for equity in health

    2024  Volume 23, Issue 1, Page(s) 29

    Abstract: Background: Significant race and sex disparities exist in the prevalence, diagnosis, and outcomes of peripheral artery disease (PAD). However, clinical trials evaluating treatments for PAD often lack representative patient populations. This systematic ... ...

    Abstract Background: Significant race and sex disparities exist in the prevalence, diagnosis, and outcomes of peripheral artery disease (PAD). However, clinical trials evaluating treatments for PAD often lack representative patient populations. This systematic review aims to summarize the demographic representation and enrollment strategies in clinical trials of lower-extremity endovascular interventions for PAD.
    Methods: Following the 2020 Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, we searched multiple sources (Medline, EMBASE, Cochrane, Clinicaltrials.gov, WHO clinical trial registry) for randomized controlled trials (RCTs), RCT protocols, and peer-reviewed journal publications of RCTs conducted between January 2012 and December 2022. Descriptive analysis was used to summarize trial characteristics, publication or study protocol characteristics, and the reporting of demographic characteristics. Meta-regression was used to explore associations between demographic characteristics and certain trial characteristics.
    Results: A total of 2,374 records were identified. Of these, 59 met the inclusion criteria, consisting of 35 trials, 14 publications, and 10 protocols. Information regarding demographic representation was frequently missing. While all 14 trial publications reported age and sex, only 4 reported race/ethnicity, and none reported socioeconomic or marital status. Additionally, only 4 publications reported clinical outcomes by demographic characteristics. Meta-regression analysis revealed that 6% more women were enrolled in non-European trials (36%) than in European trials (30%).
    Conclusions: The findings of this review highlight potential issues that may compromise the reliability and external validity of study findings in lower-extremity PAD RCTs when applied to the real-world population. Addressing these issues is crucial to enhance the generalizability and impact of clinical trial results in the field of PAD, ultimately leading to improved clinical outcomes for patients in underrepresented populations.
    Registration: The systematic review methodology was published in the International Prospective Register of Systematic Reviews (PROSPERO: CRD42022378304).
    MeSH term(s) Female ; Humans ; Randomized Controlled Trials as Topic ; Peripheral Arterial Disease/therapy
    Language English
    Publishing date 2024-02-13
    Publishing country England
    Document type Systematic Review
    ZDB-ID 2092056-8
    ISSN 1475-9276 ; 1475-9276
    ISSN (online) 1475-9276
    ISSN 1475-9276
    DOI 10.1186/s12939-024-02104-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Clinical and economic outcomes of assigning percutaneous coronary intervention patients to contrast-sparing strategies based on the predicted risk of contrast-induced acute kidney injury.

    Griffiths, Robert I / Bhave, Aparna / McGovern, Alysha M / Hargens, Liesl M / Solid, Craig A / Amin, Amit P

    Journal of medical economics

    2024  Volume 27, Issue 1, Page(s) 663–670

    Abstract: Objective: Contrast-sparing strategies have been developed for percutaneous coronary intervention (PCI) patients at increased risk of contrast-induced acute kidney injury (CI-AKI), and numerous CI-AKI risk prediction models have been created. However, ... ...

    Abstract Objective: Contrast-sparing strategies have been developed for percutaneous coronary intervention (PCI) patients at increased risk of contrast-induced acute kidney injury (CI-AKI), and numerous CI-AKI risk prediction models have been created. However, the potential clinical and economic consequences of using predicted CI-AKI risk thresholds for assigning patients to contrast-sparing regimens have not been evaluated. We estimated the clinical and economic consequences of alternative CI-AKI risk thresholds for assigning Medicare PCI patients to contrast-sparing strategies.
    Methods: Medicare data were used to identify inpatient PCI from January 2017 to June 2021. A prediction model was developed to assign each patient a predicted probability of CI-AKI. Multivariable modeling was used to assign each patient two marginal predicted values for each of several clinical and economic outcomes based on (1) their underlying clinical and procedural characteristics plus their true CI-AKI status in the data and (2) their characteristics plus their counterfactual CI-AKI status. Specifically, CI-AKI patients above the predicted risk threshold for contrast-sparing were reassigned their no CI-AKI (counterfactual) outcomes. Expected event rates, resource use, and costs were estimated before and after those CI-AKI patients were reassigned their counterfactual outcomes. This entailed bootstrapped sampling of the full cohort.
    Results: Of the 542,813 patients in the study cohort, 5,802 (1.1%) had CI-AKI. The area under the receiver operating characteristic curve for the prediction model was 0.81. At a predicted risk threshold for CI-AKI of >2%, approximately 18.0% of PCI patients were assigned to contrast-sparing strategies, resulting in (/100,000 PCI patients) 121 fewer deaths, 58 fewer myocardial infarction readmissions, 4,303 fewer PCI hospital days, $11.3 million PCI cost savings, and $25.8 million total one-year cost savings, versus no contrast-sparing strategies.
    Limitations: Claims data may not fully capture disease burden and are subject to inherent limitations such as coding inaccuracies. Further, the dataset used reflects only individuals with fee-for-service Medicare, and the results may not be generalizable to Medicare Advantage or other patient populations.
    Conclusions: Assignment to contrast-sparing regimens at a predicted risk threshold close to the underlying incidence of CI-AKI is projected to result in significant clinical and economic benefits.
    MeSH term(s) Humans ; Percutaneous Coronary Intervention/methods ; Percutaneous Coronary Intervention/economics ; Percutaneous Coronary Intervention/adverse effects ; Acute Kidney Injury/chemically induced ; Contrast Media/adverse effects ; United States ; Medicare ; Male ; Female ; Aged ; Risk Assessment ; Aged, 80 and over ; Risk Factors
    Chemical Substances Contrast Media
    Language English
    Publishing date 2024-04-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 2270945-9
    ISSN 1941-837X ; 1369-6998
    ISSN (online) 1941-837X
    ISSN 1369-6998
    DOI 10.1080/13696998.2024.2334180
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Downstream Revenue Realized by Facilities Placing Inflatable Penile Prosthesis in Medicare Beneficiaries to Treat Erectile Dysfunction.

    Sun, Andrew / Williams, Abimbola O / Rojanasarot, Sirikan / Moore, Gregory / McGovern, Alysha M / Hargens, Liesl M / Turner, Erin / Babbar, Paurush

    Urology

    2024  

    Abstract: Objectives: To quantify the incremental downstream revenue generated from subsequent treatment of men who received an inflatable penile prosthesis (IPP) to treat erectile dysfunction (ED), compared to men without ED.: Methods: The 100% Medicare ... ...

    Abstract Objectives: To quantify the incremental downstream revenue generated from subsequent treatment of men who received an inflatable penile prosthesis (IPP) to treat erectile dysfunction (ED), compared to men without ED.
    Methods: The 100% Medicare Standard Analytic Files were used to conduct a retrospective claims analysis of the 5-year revenue generated by patients receiving IPP to treat their ED, compared to a propensity-matched cohort of men without ED. Men aged 65 years or older with ED who underwent IPP implantation (Current Procedural Terminology® 54405) in a hospital outpatient setting between January 1, 2016 and December 31, 2021, and who had continuous Medicare Parts A and B enrollment for 12 months pre-index IPP and five years post-index IPP discharge date were included in the study. Men without ED but with comparable characteristics were identified and used as a comparator group. Revenue received by hospitals from Medicare was defined as the sum of payments for patient services, other payor-paid amounts, patient deductibles, copayments, and coinsurance. Revenue was inflated to 2022 US dollars. The mean values and their corresponding standard deviations (SD) are reported.
    Results: After matching, there were 2,905 men with ED who received an IPP and 7,462 men without ED. The IPP cohort showed a significantly higher 5-year cumulative revenue (mean=$34,571 [SD=$50,234]) compared to the men without ED (mean=$3,189 [SD=$11,527]). When stratified by diagnosis type, the differences in revenue were $10,258 for circulatory disease, $2,646 for diabetes, $2,013 for urology, and $1,043 for prostate cancer. Significantly more IPP patients had at least one health encounter for these conditions over the 5-year follow-up period than their matched controls (55.0% versus 7.8% for circulatory, 46.7% versus 16.8% for urology, 19.3% versus 3.6% for diabetes, and 19.0% versus 3.0% for prostate cancer).
    Conclusions: Men with ED who received IPP generated substantially higher revenue for the healthcare system over a 5-year period, nearly ten times as much, compared to men without ED, excluding the initial cost of the IPP procedure. The presence of ED, coupled with IPP usage, is associated with significantly increased healthcare revenue across a range of medical conditions compared to men without ED. These findings emphasize the financial implications for advanced ED programs to improve access to necessary care for these patients. Healthcare facilities may leverage these insights to effectively allocate resources to deliver critical healthcare to men with ED.
    Language English
    Publishing date 2024-04-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 192062-5
    ISSN 1527-9995 ; 0090-4295
    ISSN (online) 1527-9995
    ISSN 0090-4295
    DOI 10.1016/j.urology.2024.04.018
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Cost to Medicare of acute kidney injury in percutaneous coronary intervention.

    Griffiths, Robert I / Cavalcante, Rafael / McGovern, Alysha M / Bhave, Aparna / Hargens, Liesl M / Solid, Craig A / Amin, Amit P

    American heart journal

    2023  Volume 262, Page(s) 20–28

    Abstract: Background: Acute kidney injury (AKI), including contrast-induced AKI (CI-AKI), is an important complication of percutaneous coronary intervention (PCI), resulting in short- and long-term adverse clinical outcomes. While prior research has reported an ... ...

    Abstract Background: Acute kidney injury (AKI), including contrast-induced AKI (CI-AKI), is an important complication of percutaneous coronary intervention (PCI), resulting in short- and long-term adverse clinical outcomes. While prior research has reported an increased cost burden to hospitals from CI-AKI, the incremental cost to payers remains unknown. Understanding this incremental cost may inform decisions and even policy in the future. The objective of this study was to estimate the short- and long-term cost to Medicare of AKI overall, and specifically CI-AKI, in PCI.
    Methods: Patients undergoing inpatient PCI between January 2017 and June 2020 were selected from Medicare 100% fee-for-service data. Baseline clinical characteristics, PCI lesion/procedural characteristics, and AKI/CI-AKI during the PCI admission, were identified from diagnosis and procedure codes. Poisson regression, generalized linear modelling, and longitudinal mixed effects modelling, in full and propensity-matched cohorts, were used to compare PCI admission length of stay (LOS) and cost (Medicare paid amount inflated to 2022 US$), as well as total costs during 1-year following PCI, between AKI and non-AKI patients.
    Results: The study cohort included 509,039 patients, of whom 104,033 (20.4%) were diagnosed with AKI and 9,691 (1.9%) with CI-AKI. In the full cohort, AKI was associated with +4.12 (95% confidence interval = 4.10, 4.15) days index PCI admission LOS, +$11,313 ($11,093, $11,534) index admission costs, and +$14,800 ($14,359, $15,241) total 1-year costs. CI-AKI was associated with +3.03 (2.97, 3.08) days LOS, +$6,566 ($6,148, $6,984) index admission costs, and +$13,381 ($12,118, $14,644) cumulative 1-year costs (all results are adjusted for baseline characteristics). Results from the propensity-matched analyses were similar.
    Conclusions: AKI, and specifically CI-AKI, during PCI is associated with significantly longer PCI admission LOS, PCI admission costs, and long-terms costs.
    MeSH term(s) Humans ; Aged ; United States/epidemiology ; Percutaneous Coronary Intervention/methods ; Risk Factors ; Medicare ; Forecasting ; Acute Kidney Injury/chemically induced ; Acute Kidney Injury/epidemiology ; Contrast Media/adverse effects
    Chemical Substances Contrast Media
    Language English
    Publishing date 2023-04-02
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 80026-0
    ISSN 1097-6744 ; 0002-8703
    ISSN (online) 1097-6744
    ISSN 0002-8703
    DOI 10.1016/j.ahj.2023.03.013
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Diversity in clinical trial inclusion for peripheral artery disease lower extremity endovascular interventions: a systematic review protocol.

    Long, Chandler / Williams, Abimbola O / Jacobsen, Caroline M / McGovern, Alysha M / Hargens, Liesl M / Duval, Sue / Jaff, Michael R

    Journal of comparative effectiveness research

    2023  Volume 12, Issue 12, Page(s) e230048

    Abstract: Aim: ...

    Abstract Aim:
    MeSH term(s) Humans ; Systematic Reviews as Topic ; Meta-Analysis as Topic ; Peripheral Arterial Disease/surgery ; Lower Extremity/surgery
    Language English
    Publishing date 2023-11-10
    Publishing country England
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 2669725-7
    ISSN 2042-6313 ; 2042-6305
    ISSN (online) 2042-6313
    ISSN 2042-6305
    DOI 10.57264/cer-2023-0048
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: The rate of magnetic resonance imaging in patients with spinal cord stimulation.

    Desai, Mehul J / Hargens, Liesl M / Breitenfeldt, Maria D / Doth, Alissa H / Ryan, Michael P / Gunnarsson, Candace / Safriel, Yair

    Spine

    2015  Volume 40, Issue 9, Page(s) E531–7

    Abstract: Study design: Analysis of use of magnetic resonance imaging (MRI) in the chronic back and leg pain spinal cord stimulation (SCS)-implanted population was conducted using a propensity-matched cohort population.: Objective: To project the percentage of ...

    Abstract Study design: Analysis of use of magnetic resonance imaging (MRI) in the chronic back and leg pain spinal cord stimulation (SCS)-implanted population was conducted using a propensity-matched cohort population.
    Objective: To project the percentage of patients with SCS expected to need at least 1 MRI within 5 years of implant.
    Summary of background data: Patients experiencing pain, including those who underwent implantation with SCS systems, are likely to have comorbidities and ongoing pain issues that may require diagnostic imaging. MRI is the most common diagnostic imaging modality for evaluating patients with new or worsening low back pain. However, patients with SCS are typically excluded from receiving MRI because of the safety risks related to the interactions of MRI fields and implantable devices.
    Methods: To provide an accurate estimate of the need for MRI in the SCS-implanted population, Truven Health MarketScan Commercial Claims and Medicare Supplemental databases were used to perform analysis of SCS-implanted patients propensity score matched to a nonimplanted population-based cohort. Four years of paid and adjudicated claims data were used to determine the magnetic resonance (MR) images received, which was exponentially projected to estimate MRI within 5 and 10 years of implant.
    Results: Approximately 82% to 84% of SCS-implanted patients are expected to need at least 1 MRI within 5 years of implant. Furthermore, 59% to 74% of patients will require nonspine MRI within 10 years.
    Conclusion: There is a high need for MRI in this chronic back and leg pain SCS population, with a significant portion being completed on locations outside of the spine. This analysis highlights a need for MRI-conditional SCS devices that grant access of patients with SCS to this imaging modality.
    Level of evidence: 3.
    MeSH term(s) Adolescent ; Adult ; Aged ; Aged, 80 and over ; Back Pain/epidemiology ; Back Pain/therapy ; Chronic Pain/epidemiology ; Chronic Pain/therapy ; Cohort Studies ; Contraindications ; Female ; Humans ; Implantable Neurostimulators/statistics & numerical data ; Magnetic Resonance Imaging/utilization ; Male ; Middle Aged ; Propensity Score ; Spinal Cord Stimulation/statistics & numerical data ; Young Adult
    Language English
    Publishing date 2015-05-01
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 752024-4
    ISSN 1528-1159 ; 0362-2436
    ISSN (online) 1528-1159
    ISSN 0362-2436
    DOI 10.1097/BRS.0000000000000805
    Database MEDical Literature Analysis and Retrieval System OnLINE

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