Publications by authors named "Rituparna Bhattacharya"

Objectives: To examine real-world characteristics, journey, and outcomes among patients with locoregional, nonmetastatic renal cell carcinoma (RCC).

Methods: A retrospective analysis of medical records from the ConcertAI Oncology Dataset was performed on adults in the United States with newly diagnosed nonmetastatic RCC between January 2012-December 2017 who received surgical treatment, and were followed until August 2021. Patients were stratified based on the risk of recurrence after nephrectomy.

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Background: In patients with renal cell carcinoma (RCC) enrolled in the phase III KEYNOTE-564 trial (NCT03142334), disease-free survival (DFS) following nephrectomy was prolonged with use of adjuvant pembrolizumab therapy versus placebo. Patient-reported outcomes (PROs) provide an important measure of health-related quality of life (HRQoL) and can complement efficacy and safety results.

Patients And Methods: In KEYNOTE-564, 994 patients were randomly assigned to receive pembrolizumab 200 mg (n = 496) or placebo (n = 498) intravenously every 3 weeks for ≤17 cycles.

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Introduction: Pembrolizumab was recently approved as an adjuvant treatment of renal cell carcinoma (RCC), based on prolonged disease-free survival compared to placebo in the phase III KEYNOTE-564 trial. The objective of this study was to evaluate the cost-effectiveness of pembrolizumab as monotherapy in the adjuvant treatment of RCC post-nephrectomy, from a US health sector perspective.

Patients And Methods: A Markov model with 4 health states (disease-free, locoregional recurrence, distant metastases, and death) was developed to compare the cost and effectiveness of pembrolizumab versus routine surveillance or sunitinib.

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Article Synopsis
  • - This study investigates whether disease-free survival (DFS) can be a reliable indicator of long-term survival (overall survival or OS) in patients with intermediate-high or high-risk renal cell carcinoma (RCC) after kidney removal (nephrectomy).
  • - Using data from the Surveillance, Epidemiology and End Results-Medicare database, researchers analyzed 643 patients, revealing that those who experience recurrence have significantly lower OS rates compared to those who do not, particularly at 1, 3, and 5 years post-surgery.
  • - The findings suggest that a longer time to recurrence is associated with increased overall survival, indicating that DFS may serve as a useful predictor for OS in RCC patients when OS data is not fully
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Renal cell carcinoma (RCC) is associated with a high risk of recurrence. Although RCC has been shown to impose a substantial burden on patients, little is known about the incremental clinical and economic burden attributable to disease recurrence. With recent advances in the RCC-therapeutic landscape, including adjuvant therapies, it is important to quantify the clinical and economic burden associated with RCC recurrence to better evaluate the potential impact of treatment in this patient population.

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Background: Home health use is rising rapidly in the United States as the population ages, the prevalence of chronic disease increases, and older Americans express their desire to age at home. Enrollment in Medicare Advantage (MA) plans rather than Traditional Medicare (TM) has grown as well, from 13% of total Medicare enrollment in 2004 to 39% in 2020. Despite these shifts, little is known about outcomes and costs following home health in MA as compared with TM.

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Objectives: To compare outcomes and costs following skilled nursing facility (SNF) discharge for patients within a Medicare Advantage (MA) organization vs traditional Medicare (TM).

Study Design: Retrospective analysis of adults with a postacute SNF admission identified from MA claims (MA cohort: n = 56,228) and the Medicare 5% Limited Data Sets (TM cohort: n = 67,859).

Methods: Outcomes included hospitalization, proportion of days at home, and total medical costs during the 180 days post SNF discharge, and successful community discharge.

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Background: Rheumatoid arthritis (RA), psoriatic arthritis (PsA), and psoriasis (PSO) are immune-mediated systemic, chronic inflammatory conditions. Moderate to severe disease is treated with conventional disease-modifying antirheumatic drugs (DMARDs) such as methotrexate, sulfasalazine, or leflunomide. If a patient does not respond to these firstline treatments, then tumor necrosis factor inhibitor (TNFi) or non-TNFi immunotherapy agents are administered via infusion, injection, or taken orally.

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: To estimate amyotrophic lateral sclerosis (ALS) prevalence, 5-year survival, and explore factors associated with survival in a Medicare population. : A validated administrative claims algorithm was used to classify individual's ages 18-89 years at index date (first claim with a diagnosis of motor neuron disease or ALS between 1 January 2007 and 31 December 2011) with Medicare Advantage prescription drug coverage into mutually exclusive categories: ALS, no ALS, and possible ALS. Crude prevalence and cumulative survival from index date to the date of death, disenrollment or end of the study were calculated.

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Background: There are many studies in the literature on the association between depression treatment and health expenditures. However, there is a knowledge gap in examining this relationship taking into account coexisting chronic conditions among patients with diabetes. We aim to analyze the association between depression treatment and healthcare expenditures among adults with Type 2 Diabetes Mellitus (T2DM) and newly-diagnosed depression, with consideration of coexisting chronic physical conditions.

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Background: Among elderly patients, the management of type 2 diabetes mellitus (T2DM) is complicated by population heterogeneity and elderly-specific complexities. Few studies have been done to understand treatment intensification among elderly patients failing multiple oral antidiabetic drugs (OADs).

Objective: To examine the association between time to treatment intensification of T2DM and elderly-specific patient complexities.

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Objectives: To compare clinical and economic outcomes of early insulin initiation with those of delayed initiation in older adults with type 2 diabetes mellitus (T2DM).

Design: Retrospective cohort study.

Setting: Humana Medicare Advantage health insurance plan.

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Background: With improved treatments, the survival rate for breast cancer patients is increasing. With the improvements in quantity of life, research in the field of cancer survivorship has turned its attention to psychosocial functioning and health behaviors.

Objectives: The purpose of this study was to examine how those currently under treatment and those completing treatment engaged in health behaviors (ie, diet, vitamin use, exercise, and cancer screening) and if psychosocial predictors, guided by the Self-regulation Model, also play a role.

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Objective. To examine the association between type of multimorbidity and CAM use among adults with multimorbidity. Methods.

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The objective was to examine depression treatment among non-pregnant women, aged 22 and older, with hypertension, utilizing cross-sectional data from the 2006 and 2007 Medical Expenditure Panel Survey. Depression treatment patterns by demographic, socioeconomic, health care access, and health characteristics were analyzed utilizing chi-square tests and logistic and multinomial logistic regressions. Overall, 23.

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Objective: We examined the association between depression and hospitalizations for Ambulatory Care Sensitive Conditions (H-ACSC) among Medicare beneficiaries with chronic physical conditions.

Methods: We used a retrospective longitudinal design using multiple years (2002-2009) of linked fee-for-service Medicare claims and survey data from Medicare Current Beneficiary Survey to create six longitudinal panels. We followed individuals in each panel for a period of 3-years; first year served as the baseline and subsequent 2-years served as the follow-up.

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Aims: We evaluated the association of combined use of antidepressants and statins and the risk of new-onset diabetes among high-risk adults.

Methods: We used a retrospective, observational, longitudinal design among adults (age ≥ 22 years) who were diabetes free at baseline and had reported hypertension or hyperlipidemia or heart disease. We used data were from 2004 to 2009 Medical Expenditure Panel Survey and identified from self-reported diabetes or insulin use.

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Background: Depression and anxiety have been reported to be associated with chronic physical conditions. We examined the excess risk of chronic physical conditions associated with depression and/or anxiety within a multivariate framework controlling for demographic and modifiable lifestyle risk factors.

Methods: We used a retrospective cross-sectional study design.

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Antidepressant use has been linked to new-onset diabetes. However, the existing literature on this relationship has yielded inconsistent findings. The primary objective of this study was to systematically synthesize the literature on the relationship between antidepressant use and new-onset diabetes using meta-analysis.

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Background: Anticholinergic medications, although frequently used in elderly populations, are associated with cognitive impairment and constitute significant concern for patients with dementia.

Objective: The purpose of our study was to examine patterns and predictors of prescribing anticholinergic agents for elderly outpatients with dementia.

Methods: We combined data from the 2006-2007 National Ambulatory Medical Care Survey and the outpatient department component of National Hospital Ambulatory Medical Care Survey to analyze patient visits by elderly persons (aged ≥65 years) with dementia.

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