Publications by authors named "Grace Mhango"

Article Synopsis
  • This report analyzes the trends in statin prescriptions for breast cancer survivors with diabetes, a group at significant risk for cardiovascular disease (CVD).
  • The study utilized data from the SEER cancer registry and Medicare claims, evaluating prescription rates based on various factors like age and race.
  • Results indicated that 68% of participants received statin prescriptions, with an increasing trend over the years and a notable racial disparity, suggesting the need for improved prescription practices in this high-risk population.
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Background: Diabetes is a common comorbidity in patients with early-stage non-small cell lung cancer (NSCLC), a growing population due to increased LC screening. However, it is unknown if diabetes is associated with less aggressive NSCLC treatment and worse NSCLC outcomes. This study aimed to investigate treatment patterns and outcomes of older patients with Stage I NSCLC and diabetes.

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Background: To describe outcomes and compare the effectiveness of stereotactic body radiotherapy (SBRT) versus 3-dimensional conformal radiotherapy (3DCRT) or intensity-modulated radiotherapy (IMRT) in patients with stage IIA lymph node-negative (N0) non-small cell lung cancer (NSCLC) tumors > 5 cm.

Methods: We used the SEER-Medicare database (2005-2015) to identify patients > 65 years with stage IIA (AJCC TNM7) N0 NSCLC > 5 cm tumors who were treated with SBRT, IMRT, and 3DCRT. We used propensity score methods with inverse probability weighting to compare lung cancer-specific survival (LCSS), overall survival (OS), and toxicity.

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Background: Randomized controlled trials (RCTs) have demonstrated a survival benefit for adjuvant platinum-based chemotherapy after resection of locoregional non-small cell lung cancer (NSCLC). The relative benefits and harms and optimal approach to treatment for NSCLC patients who have major comorbidities (chronic obstructive pulmonary disease [COPD], coronary artery disease [CAD], and congestive heart failure [CHF]) are unclear, however.

Methods: We used a simulation model to run in-silico comparative trials of adjuvant chemotherapy versus observation in locoregional NSCLC in patients with comorbidities.

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Background: Advancement in breast cancer (BC) diagnosis and treatment have increased the number of long-term survivors. Consequently, primary BC survivors are at a greater risk of developing second primary cancers (SPCs). The risk factors for SPCs among BC survivors including sociodemographic characteristics, cancer treatment, comorbidities, and concurrent medications have not been comprehensively examined.

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Introduction: Non-small cell lung cancer (NSCLC) patients frequently have major comorbidities but there is scarce data regarding the impact of these conditions on management strategies. We used simulation modeling to compare different treatments for stage I NSCLC for patients with common major comorbidities.

Methods: We used data on NSCLC patinet outcomes and quality of life from: (1) the Surveillance Epidemiology and End Results (SEER) database linked to Medicare claims; (2) Kaiser Permanente Southern California electronic health records; and (3) SEER-Medical Health Outcomes Survey to parameterize a novel simulation model of management and outcomes for stage I NSCLC.

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Chronic obstructive pulmonary disease (COPD) is a well-established independent risk factor for lung cancer; however, the literature on the association between asthma and lung cancer is mixed. Whether asthma-COPD overlap (ACO) is associated with lung cancer has not been studied. We aimed to compare lung cancer risk among patients with ACO versus COPD and other conditions associated with airway obstruction.

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Background: Gastroenteropancreatic neuroendocrine tumors (GEP-NETs) are increasingly common malignancies and tend to have favorable long-term prognoses. Somatostatin analogues (SSA) are a first-line treatment for many NETs. Short-term experiments suggest an association between SSAs and hyperglycemia.

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Background: Medical centers with varying levels of expertise treat gastroenteropancreatic neuroendocrine tumors (GEP-NETs), which are relatively rare tumors. This study assesses the impact of center volume on GEP-NET treatment outcomes.

Methods: We used the Surveillance, Epidemiology, and End Results (SEER) registry linked to Medicare claims data.

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Background: Although asthma has been suggested as a risk factor for cardiovascular disease (CVD), robust longitudinal evidence of this relationship is limited.

Research Question: Using Framingham Offspring Cohort data, the goal of this study was to longitudinally examine the association between asthma and lifetime risk of CVD while controlling for cardiovascular risk factors included in the Framingham Risk Score.

Study Design And Methods: Data were analyzed from a prospective population-based cohort of 3,612 individuals, ages 17 to 77 years, who participated in Framingham Offspring Study examinations from 1979 to 2014.

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Background: Racial disparities in resection of non-small cell lung cancer (NSCLC) are well documented. Patient-level and system-level factors only partially explain these findings. Although physician-related factors have been suggested as mediators, empirical evidence for their contribution is limited.

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Background: Robotic-assisted surgery (RAS) is a novel surgical approach increasingly used for patients with non-small cell lung cancer (NSCLC). However, data comparing the effectiveness and costs of RAS vs open thoracotomy and video-assisted thoracoscopic surgery (VATS) for NSCLC are limited.

Methods: Patients > 65 years old with stage I to IIIA NSCLC treated with RAS, VATS, or open thoracotomy were identified from the Surveillance, Epidemiology, and End Results-Medicare database and matched according to age, sex, stage, and extent of resection.

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Background: Some interstitial lung diseases are associated with lung cancer. However, it is unclear whether asymptomatic interstitial lung abnormalities convey an independent risk.

Objectives: The goal of this study was to assess whether interstitial lung abnormalities are associated with an increased risk of lung cancer.

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Background: Cardiovascular disease (CVD) is a leading cause of mortality in early-stage breast cancer survivors. Recent studies suggest that bisphosphonates may decrease CVD risk in older patients.

Objective: This study sought to assess whether bisphosphonate use is associated with lower rates of incident CVD events among early-stage breast cancer survivors.

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Characteristics and outcomes of lung cancer in patients with idiopathic pulmonary fibrosis (IPF) in the United States remain understudied. To determine the tumor characteristics and survival of patients with IPF with non-small cell lung cancer (NSCLC) using U.S.

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Purpose: Lung cancer risk models optimise screening by identifying subjects at highest risk, but none of them consider emphysema, a risk factor identifiable on baseline screen. Subjects with a negative baseline low-dose CT (LDCT) screen are at lower risk for subsequent diagnosis and may benefit from risk stratification prior to additional screening, thus we investigated the role of radiographic emphysema as an additional predictor of lung cancer diagnosis in participants with negative baseline LDCT screens of the National Lung Screening Trial.

Methods: Our cohorts consist of participants with a negative baseline (T0) LDCT screen (n=16 624) and participants who subsequently had a negative 1-year follow-up (T1) screen (n=14 530).

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This population-based study compares opioid use in patients with non–small cell lung cancer who underwent open resection vs video-assisted thoracoscopic surgery.

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Rationale: Video-assisted thoracoscopic surgery (VATS) and open lobectomy are both standard of care for the treatment of early-stage non-small cell lung cancer (NSCLC) because of equivalent long-term survival.

Objectives: To evaluate whether the improved perioperative outcomes associated with VATS lobectomy are explained by surgeon characteristics, including case volume and specialty training.

Methods: We analyzed the Surveillance, Epidemiology, and End Results-Medicare-linked registry to identify stage I-II NSCLC in patients above 65 years of age.

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Background: Overdiagnosis among clinically detected lung cancers likely consists of cases that are non-aggressive and slowly progressive and will never disseminate, cause symptoms or be a threat to a subject's survival, even if untreated. In this study, we estimate the prevalence of non-aggressive lung cancers from a large, population-based cancer registry.

Methods: We identified individuals ≥65 years with histologically confirmed, untreated stage I non-small cell lung cancers (NSCLCs) from the Surveillance, Epidemiology, and End Results-Medicare registry.

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Surgeon procedure volume influences outcomes of patients undergoing cancer operations. Limited data are available, however, on the volume-outcome relationship for video-assisted thoracoscopic surgery (VATS) in the treatment of non-small cell lung cancer (NSCLC). In this study, we used population-based data to evaluate the extent to which surgeon volume is associated with postoperative and long-term oncological outcomes following VATS resection for older patients with early-stage NSCLC.

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Objectives: Prior studies have shown an anticancer effect of statins in patients with certain malignancies. However, it is unclear whether statins have a mortality benefit in lung cancer. We compared survival of patients with stage IV non-small cell lung cancer (NSCLC) receiving vs.

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Rationale: In the treatment of stage III non-small cell lung cancer (NSCLC), three-dimensional conformal radiotherapy (3D-RT) is the standard method for radiation delivery; however, intensity-modulated radiotherapy (IMRT) has been rapidly adopted. These two modalities may lead to similar survival, warranting a closer scrutiny of the costs involved.

Objectives: The purpose of this study is to compare radiotherapy-related and total costs of older patients with NSCLC treated with 3D-RT versus IMRT.

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Background: Obesity is a robust predictor of poor asthma control in younger adults. Given the high prevalence of asthma and obesity in older Americans, weight reduction could benefit asthma management in this population.

Objective: To assess the association between obesity and asthma outcomes among older adults.

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Purpose: Limited resection has been increasingly used in older patients with stage IA lung cancer. However, the equivalency of limited resection versus lobectomy according to histology is unknown.

Methods: We identified patients older than 65 years with stage IA invasive adenocarcinoma or squamous cell carcinoma ≤ 2 cm who were treated with limited resection (wedge or segmentectomy) or lobectomy in the Surveillance, Epidemiology, and End Results-Medicare database.

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Background: Limited resection and stereotactic body radiotherapy (SBRT) have emerged as treatment options for older patients with early-stage non-small-cell lung cancer (NSCLC), who are not good candidates for lobectomy.

Methods: We used the Surveillance, Epidemiology and End Results-Medicare registry to identify patients older than 65 years with stage I to II NSCLC and negative lymph nodes treated with SBRT versus limited resection. We fitted a propensity score model predicting the use of SBRT and compared adjusted overall survival of patients treated with SBRT versus limited resection.

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