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Browse the failure-mode index

12,218 real negative results, null findings, and replication failures in Medicine. Search the index →

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record compiled from open scholarly databases; the abstract is shown in full only where the paper is openly licensed, otherwise a short excerpt under fair use. Classifications are automated and approximate.

Negative / Null Result ReportOpen accessMedicine

A Randomized Trial of Nighttime Physician Staffing in an Intensive Care Unit

Meeta Prasad Kerlin, Dylan S. Small, Elizabeth Cooney et al. · 2013 · New England Journal of Medicine

BACKGROUND: Increasing numbers of intensive care units (ICUs) are adopting the practice of nighttime intensivist staffing despite the lack of experimental evidence of its effectiveness. METHODS: We conducted a 1-year randomized trial in an…

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Negative / Null Result ReportOpen accessMedicine

Diffusion and Perfusion MRI to Differentiate Treatment-Related Changes Including Pseudoprogression from Recurrent Tumors in High-Grade Gliomas with Histopathologic Evidence

Alisa J. Prager, Nina Martinez, Kathryn Beal et al. · 2015 · American Journal of Neuroradiology

BACKGROUND AND PURPOSE: Treatment-related changes and recurrent tumors often have overlapping features on conventional MR imaging. The purpose of this study was to assess the utility of DWI and DSC perfusion imaging alone and in combination to differentiate treatment-related effects and recurrent high-grade gliomas. MATERIALS AND METHODS: We retrospectively identified 68 consecutive patients with high-grade gliomas treated by surgical resection followed by radiation therapy and temozolomide, who then developed increasing enhancing mass lesions indeterminate for treatment-related changes versus

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Negative / Null Result ReportOpen accessMedicine

Racial Disparities in Postpartum Pain Management

Nevert Badreldin, William A. Grobman, Lynn M. Yee · 2019 · Obstetrics and Gynecology

OBJECTIVE: To evaluate racial and ethnic differences in women's postpartum pain scores, inpatient opioid administration, and discharge opioid prescriptions. METHODS: We conducted a retrospective cohort study of all deliveries at a single…

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Negative / Null Result ReportMedicine

Identification of Therapeutic Benefit from Revascularization in Patients With Left Ventricular Systolic Dysfunction

Lee Fong Ling, Thomas H. Marwick, Demetrio Roland Flores et al. · 2013 · Circulation Cardiovascular Imaging

BACKGROUND: Although the recent surgical treatment of ischemic heart failure substudy reported that revascularization of viable myocardium did not improve survival, these results were limited by the viability imaging technique used and the…

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Negative / Null Result ReportOpen accessMedicine

Medication Use to Reduce Risk of Breast Cancer

US Preventive Services Task Force, Douglas K Owens, Karina W. Davidson et al. · 2019 · JAMA

Importance: Breast cancer is the most common nonskin cancer among women in the United States and the second leading cause of cancer death. The median age at diagnosis is 62 years, and an estimated 1 in 8 women will develop breast cancer at…

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Negative / Null Result ReportOpen accessMedicine

Incidence of Extraarticular Rheumatoid Arthritis in Olmsted County, Minnesota, in 1995–2007 Versus 1985–1994: A Population-based Study

Elena Myasoedova, Cynthia S. Crowson, Carl Turesson et al. · 2011 · The Journal of Rheumatology

OBJECTIVE: To assess incidence and mortality effects of extraarticular rheumatoid arthritis (ExRA) in patients with incident RA in 1995-2007 compared to 1985-1994, in Olmsted County, Minnesota, USA. METHODS: Data on incident ExRA were…

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Negative / Null Result ReportMedicine

Gefitinib Plus Chemotherapy Versus Chemotherapy in Epidermal Growth Factor Receptor Mutation–Positive Non–Small-Cell Lung Cancer Resistant to First-Line Gefitinib (IMPRESS): Overall Survival and Biomarker Analyses

Tony Mok, Sang‐We Kim, Yi‐Long Wu et al. · 2017 · Journal of Clinical Oncology

Purpose The Iressa Mutation-Positive Multicentre Treatment Beyond ProgRESsion Study (IMPRESS) compared the continuation of gefitinib plus chemotherapy with placebo plus chemotherapy in patients with epidermal growth factor receptor ( EGFR)…

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Negative / Null Result ReportOpen accessMedicine

Machine learning algorithms performed no better than regression models for prognostication in traumatic brain injury

Benjamin Gravesteijn, Daan Nieboer, Ari Ercole et al. · 2020 · Journal of Clinical Epidemiology

OBJECTIVE: We aimed to explore the added value of common machine learning (ML) algorithms for prediction of outcome for moderate and severe traumatic brain injury. STUDY DESIGN AND SETTING: We performed logistic regression (LR), lasso…

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Negative / Null Result ReportOpen accessMedicine

Preventive or Deferred Ablation of Ventricular Tachycardia in Patients With Ischemic Cardiomyopathy and Implantable Defibrillator (BERLIN VT)

Stephan Willems, Roland Richard Tilz, Daniel Steven et al. · 2020 · Circulation

Background: Catheter ablation for ventricular tachycardia (VT) reduces the recurrence of VT in patients with implantable cardioverter-defibrillators (ICDs). The appropriate timing of VT ablation and its effects on mortality and heart…

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Negative / Null Result ReportOpen accessMedicine

Effects of interactive patient smartphone support app on drug adherence and lifestyle changes in myocardial infarction patients: A randomized study

Nina Johnston, Johan Bodegård, Susanna Jerström et al. · 2016 · American Heart Journal

BACKGROUND: Patients with myocardial infarction (MI) seldom reach recommended targets for secondary prevention. This study evaluated a smartphone application ("app") aimed at improving treatment adherence and cardiovascular lifestyle in MI…

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Negative / Null Result ReportOpen accessMedicine

DPYD Variants as Predictors of 5-fluorouracil Toxicity in Adjuvant Colon Cancer Treatment (NCCTG N0147)

Adam M. Lee, Qian Shi, Emily S. Pavey et al. · 2014 · JNCI Journal of the National Cancer Institute

BACKGROUND: Previous studies have suggested the potential importance of three DPYD variants (DPYD*2A, D949V, and I560S) with increased 5-FU toxicity. Their individual associations, however, in 5-FU-based combination therapies, remain…

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Negative / Null Result ReportOpen accessMedicine

Safety and Efficacy of B-Cell Depletion with Rituximab for the Treatment of Systemic Sclerosis–associated Pulmonary Arterial Hypertension: A Multicenter, Double-Blind, Randomized, Placebo-controlled Trial

Roham T. Zamanian, David B. Badesch, Lorinda Chung et al. · 2021 · American Journal of Respiratory and Critical Care Medicine

Abstract Rationale Systemic sclerosis (SSc)–pulmonary arterial hypertension (PAH) is one of the most prevalent and deadly forms of PAH. B cells may contribute to SSc pathogenesis. Objectives We investigated the safety and efficacy of…

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Negative / Null Result ReportMedicine

Adolescent Idiopathic Scoliosis: Common Questions and Answers.

Angela Kuznia, Anita K Hernandez, Lydia U Lee · 2020 · PubMed

Adolescent idiopathic scoliosis affects 1% to 3% of U.S. adolescents. It is defined by a lateral curvature of the spine (Cobb angle) of at least 10 degrees in the absence of underlying congenital or neuromuscular abnormalities. Adolescent…

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Negative / Null Result ReportOpen accessMedicine

Antidiabetic and in vitro antioxidant potential of Hybanthus enneaspermus (Linn) F. Muell in streptozotocin–induced diabetic rats

DK Patel, R Kumar, SK Prasad et al. · 2011 · Asian Pacific Journal of Tropical Biomedicine

OBJECTIVE: To evaluate antidiabetic and antioxidant potential of Hybanthus enneaspermus in different models. METHODS: The oral glucose tolerance test (OGTT) and normoglycemic effect of alcoholic extract of Hybanthus enneaspermus (AHE) were…

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Negative / Null Result ReportOpen accessMedicine

Datopotamab Deruxtecan Versus Docetaxel for Previously Treated Advanced or Metastatic Non–Small Cell Lung Cancer: The Randomized, Open-Label Phase III TROPION-Lung01 Study

Myung‐Ju Ahn, Kentaro Tanaka, Luis Paz‐Ares et al. · 2024 · Journal of Clinical Oncology

PURPOSE The randomized, open-label, global phase III TROPION-Lung01 study compared the efficacy and safety of datopotamab deruxtecan (Dato-DXd) versus docetaxel in patients with pretreated advanced/metastatic non–small cell lung cancer…

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Negative / Null Result ReportMedicine

Operative versus non-operative treatment of acute rupture of tendo Achillis

J. F. Keating, Elizabeth Will · 2011 · Journal of Bone and Joint Surgery - British Volume

A total of 80 patients with an acute rupture of tendo Achillis were randomised to operative repair using an open technique (39 patients) or non-operative treatment in a cast (41 patients). Patients were followed up for one year. Outcome…

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Negative / Null Result ReportOpen accessMedicine

Intravenous N-acetylcysteine in pediatric patients with nonacetaminophen acute liver failure: A placebo-controlled clinical trial

Robert H. Squires, Anil Dhawan, Estella M. Alonso et al. · 2012 · Hepatology

UNLABELLED: N-acetylcysteine (NAC) was found to improve transplantation-free survival in only those adults with nonacetaminophen (non-APAP) acute liver failure (ALF) and grade 1-2 hepatic encephalopathy (HE). Because non-APAP ALF differs…

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Negative / Null Result ReportOpen accessMedicine

Effect of vitamin D on all-cause mortality in heart failure (EVITA): a 3-year randomized clinical trial with 4000 IU vitamin D daily

Armin Zittermann, Jana B. Ernst, Sylvana Prokop et al. · 2017 · European Heart Journal

AIMS: Circulating 25-hydroxyvitamin D (25OHD) levels <75 nmol/L are associated with a nonlinear increase in mortality risk. Such 25OHD levels are common in heart failure (HF). We therefore examined whether oral vitamin D supplementation…

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Negative / Null Result ReportOpen accessMedicine

Association of Methylentetraydrofolate Reductase (MTHFR) 677 C &gt; T gene polymorphism and homocysteine levels in psoriasis vulgaris patients from Malaysia: a case-control study

Siaw Cheok Liew, Esha Dasgupta, Shew Fung Wong et al. · 2012 · Nutrition Journal

BACKGROUND: The methylenetetrahydrofolate reductase (MTHFR) enzyme catalyzes the reduction of 5, 10-methylenetetrahydrofolate to 5-methyltetrahydrofolate and methyl donors. The methyl donors are required for the conversion of homocysteine to methionine. Mutation of MTHFR 677 C > T disrupts its thermostability therefore leads to defective enzyme activities and dysregulation of homocysteine levels. METHODS: This case-control study (n = 367) was conducted to investigate the correlation of the MTHFR gene polymorphism [NM_005957] and psoriasis vulgaris amongst the Malaysian population. Overnight fa

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Negative / Null Result ReportMedicine

A longitudinal study on α‐synuclein in plasma neuronal exosomes as a biomarker for Parkinson’s disease development and progression

Mengyue Niu, Yang Li, Gerald Li et al. · 2020 · European Journal of Neurology

BACKGROUND AND PURPOSE: The identification of reliable diagnostic and prognostic biomarkers for Parkinson's disease (PD) is urgently needed. Here, we explored the potential use of α-synuclein (α-syn) in plasma neuronal exosomes as a…

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Negative / Null Result ReportOpen accessMedicine

Behavioral Counseling to Prevent Skin Cancer

US Preventive Services Task Force, David C. Grossman, Susan J. Curry et al. · 2018 · JAMA

Importance: Skin cancer is the most common type of cancer in the United States. Although invasive melanoma accounts for only 2% of all skin cancer cases, it is responsible for 80% of skin cancer deaths. Basal and squamous cell carcinoma,…

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Negative / Null Result ReportOpen accessMedicine

Non-adherence to self-care practices &amp; medication and health related quality of life among patients with type 2 diabetes: a cross-sectional study

Farzana Saleh, Shirin Jahan Mumu, Ferdous Ara et al. · 2014 · BMC Public Health

BACKGROUND: Non-adherence to lifestyle modification among diabetic patients develops the short-term risks and the long-term complications as well as declines the quality of life. This study aimed to find out the association between non-adherence to self-care practices, medication and health related quality of life (HR-QoL) among type 2 diabetic patients. METHODS: At least 1 year diagnosed patients with type 2 diabetes (N = 500), age>25 years were conveniently selected from the Out-Patient Department of Bangladesh Institute of Health Sciences Hospital. Patients' self-care practices were assesse

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Negative / Null Result ReportOpen accessMedicine

Second Allograft for Hematologic Relapse of Acute Leukemia After First Allogeneic Stem-Cell Transplantation From Related and Unrelated Donors: The Role of Donor Change

Maximilian Christopeit, Oliver Kuß, Jürgen Finke et al. · 2013 · Journal of Clinical Oncology

PURPOSE: To evaluate the role of a second allogeneic hematopoietic stem-cell transplantation (HSCT2) given for relapsed acute leukemia (AL) after related or unrelated first hematopoietic stem-cell transplantation (HSCT1) and to analyze the…

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