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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

Comparison of Machine Learning Methods and Conventional Logistic Regressions for Predicting Gestational Diabetes Using Routine Clinical Data: A Retrospective Cohort Study

Yunzhen Ye, Yu Xiong, Qiongjie Zhou et al. · 2020 · Journal of Diabetes Research

BACKGROUND: Gestational diabetes mellitus (GDM) contributes to adverse pregnancy and birth outcomes. In recent decades, extensive research has been devoted to the early prediction of GDM by various methods. Machine learning methods are flexible prediction algorithms with potential advantages over conventional regression. OBJECTIVE: The purpose of this study was to use machine learning methods to predict GDM and compare their performance with that of logistic regressions. METHODS: We performed a retrospective, observational study including women who attended their routine first hospital visits

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Negative / Null Result ReportOpen accessMedicine

Phase II Trial of Pemetrexed and Bevacizumab in Patients With Recurrent or Metastatic Head and Neck Cancer

Athanassios Argiris, Michalis V. Karamouzis, William E. Gooding et al. · 2011 · Journal of Clinical Oncology

PURPOSE: We hypothesized that bevacizumab, a monoclonal antibody against vascular endothelial growth factor (VEGF), will potentiate the activity of pemetrexed, a multitargeted antifolate, in squamous cell carcinoma of the head and neck…

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Negative / Null Result ReportOpen accessMedicine

Hemoglobin A1c and Mortality in Older Adults With and Without Diabetes: Results From the National Health and Nutrition Examination Surveys (1988–2011)

Priya Palta, Elbert S. Huang, Rita R. Kalyani et al. · 2017 · Diabetes Care

OBJECTIVE Hemoglobin A1c (HbA1c) level has been associated with increased mortality in middle-aged populations. The optimal intensity of glucose control in older adults with diabetes remains uncertain. We sought to estimate the risk of…

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Negative / Null Result ReportOpen accessMedicine

Association of Trauma and Posttraumatic Stress Disorder With Incident Systemic Lupus Erythematosus in a Longitudinal Cohort of Women

Andrea L. Roberts, Susan Malspeis, Laura D. Kubzansky et al. · 2017 · Arthritis & Rheumatology

OBJECTIVE: To conduct the first longitudinal study examining whether trauma exposure and posttraumatic stress disorder (PTSD) are associated with increased risk of incident systemic lupus erythematosus (SLE) in a civilian cohort. METHODS:…

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Negative / Null Result ReportOpen accessMedicine

Clinical, histologic and histomorphometric evaluation of socket preservation using a synthetic nanocrystalline hydroxyapatite in comparison with a bovine xenograft: a randomized clinical trial

Gholam Ali Gholami, Babak Najafi, Fatemeh Mashhadiabbas et al. · 2011 · Clinical Oral Implants Research

OBJECTIVES: The aim of this study was to compare a nanocrystalline hydroxyapatite (NCHA), NanoBone(®) and a deproteinized bovine bone mineral (DBBM), Bio-Oss(®) with a collagen membrane on the horizontal ridge width alterations following…

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Negative / Null Result ReportOpen accessMedicine

Early surgical intervention and its impact on patients presenting with necrotizing soft tissue infections: A single academic center experience

Rifat Latifi, GeorgeJ Hadeed, Judith Smith et al. · 2016 · Journal of Emergencies Trauma and Shock

OBJECTIVES: Early diagnosis and emergent surgical debridement of necrotizing soft tissue infections (NSTIs) remains the cornerstone of care. We aimed to study the effect of early surgery on patients' outcomes and, in particular, on…

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Negative / Null Result ReportOpen accessMedicine

Clinical outcome of children and adults with localized Ewing sarcoma

Abha A. Gupta, Alberto S. Pappo, Natasha Saunders et al. · 2010 · Cancer

BACKGROUND: As Ewing sarcoma (EWS) can affect children and adults, these patients can be treated at either a pediatric or an adult institution. This study investigated whether differences in therapeutic strategy undertaken in pediatric and…

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Negative / Null Result ReportOpen accessMedicine

Efficacy of the Enquiring About Tolerance (EAT) study among infants at high risk of developing food allergy

Michael R. Perkin, Kirsty Logan, Henry T. Bahnson et al. · 2019 · Journal of Allergy and Clinical Immunology

BACKGROUND: The Enquiring About Tolerance (EAT) study was a randomized trial of the early introduction of allergenic solids into the infant diet from 3 months of age. The intervention effect did not reach statistical significance in the intention-to-treat analysis of the primary outcome. OBJECTIVE: We sought to determine whether infants at high risk of developing a food allergy benefited from early introduction. METHODS: A secondary intention-to-treat analysis was performed of 3 groups: nonwhite infants; infants with visible eczema at enrollment, with severity determined by SCORAD; and infants

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Negative / Null Result ReportOpen accessMedicine

Chemotherapy for adult low-grade gliomas: clinical outcomes by molecular subtype in a phase II study of adjuvant temozolomide

Michael Wahl, Joanna J. Phillips, Annette M. Molinaro et al. · 2016 · Neuro-Oncology

Background: Optimal adjuvant management of adult low-grade gliomas is controversial. Recently described tumor classification based on molecular subtype has the potential to individualize adjuvant therapy but has not yet been evaluated as…

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Negative / Null Result ReportOpen accessMedicine

Gastrointestinal Bleeding in Patients With Coronavirus Disease 2019: A Matched Case-Control Study

Tracey A. Martin, David Wan, Kaveh Hajifathalian et al. · 2020 · The American Journal of Gastroenterology

INTRODUCTION: Although current literature has addressed gastrointestinal presentations including nausea, vomiting, diarrhea, abnormal liver chemistries, and hyperlipasemia as possible coronavirus disease 2019 (COVID-19) manifestations, the…

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Negative / Null Result ReportOpen accessMedicine

Predictors of outcome in paediatric IgA nephropathy with regard to clinical and histopathological variables (Oxford classification)

Stella Edström Halling, Magnus Söderberg, U. Berg · 2011 · Nephrology Dialysis Transplantation

BACKGROUND: There has been a lack of international consensus on the classification and the predictive value of the histopathology findings in IgA nephropathy (IgAN). Recently, the International IgA Nephropathy Network has developed the…

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Negative / Null Result ReportOpen accessMedicine

A randomized placebo‐controlled phase 3 study of mesenchymal stem cells induced to secrete high levels of neurotrophic factors in amyotrophic lateral sclerosis

Merit Cudkowicz, Stacy Lindborg, Namita Goyal et al. · 2021 · Muscle & Nerve

INTRODUCTION/AIMS: Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative illness with great unmet patient need. We aimed to evaluate whether mesenchymal stem cells induced to secrete high levels of neurotrophic factors…

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Negative / Null Result ReportOpen accessMedicine

Acute Kidney Injury in COVID-19 Patients: An Inner City Hospital Experience and Policy Implications

Umar Zahid, Preethi Ramachandran, Samuel Spitalewitz et al. · 2020 · American Journal of Nephrology

BACKGROUND: Although diffuse alveolar damage and respiratory failure are the key features of coronavirus disease 2019 (COVID-19), the involvement of other organs such as the kidney has also been reported. The reports of the incidence of…

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Negative / Null Result ReportOpen accessMedicine

Intravenous administration of ulinastatin (human urinary trypsin inhibitor) in severe sepsis: a multicenter randomized controlled study

Dilip R. Karnad, Rakesh Bhadade, Pradeep Kumar Verma et al. · 2014 · Intensive Care Medicine

PURPOSE: Ulinastatin, a serine protease inhibitor, inhibits several pro-inflammatory proteases and decreases inflammatory cytokine levels and mortality in experimental sepsis. We studied the effect of ulinastatin on 28-day all-cause…

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Negative / Null Result ReportOpen accessMedicine

Association of Sex Hormones, Aging, and Atrial Fibrillation in Men

Jared W. Magnani, Carlee Moser, Joanne M. Murabito et al. · 2014 · Circulation Arrhythmia and Electrophysiology

BACKGROUND: Endogenous sex hormones have been related to cardiovascular outcomes and mortality. We hypothesized that sex hormones are related to atrial fibrillation (AF) in a community-based cohort of middle-aged to older men. METHODS AND…

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Negative / Null Result ReportOpen accessMedicine

Adjuvant chemotherapy in rectal cancer: Defining subgroups who may benefit after neoadjuvant chemoradiation and resection: A pooled analysis of 3,313 patients

Monique Maas, Patty J. Nelemans, Vincenzo Valentini et al. · 2014 · International Journal of Cancer

Recent literature suggests that the benefit of adjuvant chemotherapy (aCT) for rectal cancer patients might depend on the response to neoadjuvant chemoradiation (CRT). Aim was to evaluate whether the effect of aCT in rectal cancer is…

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Negative / Null Result ReportOpen accessMedicine

Efficacy of systemic adjuvant therapies administered to dogs after excision of oral malignant melanomas: 151 cases (2001–2012)

Sarah E. Boston, Xiaomin Lu, William T. N. Culp et al. · 2014 · Journal of the American Veterinary Medical Association

OBJECTIVE: To determine prognostic factors for and compare outcome among dogs with oral malignant melanoma following excision with or without various systemic adjuvant therapies. DESIGN: Retrospective case series. ANIMALS: 151 dogs with…

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Negative / Null Result ReportMedicine

Low Serum Thyrotropin Level and Duration of Suppression as a Predictor of Major Osteoporotic Fractures—The OPENTHYRO Register Cohort

Bo Abrahamsen, Henrik L. Jørgensen, Anne Sofie Laulund et al. · 2014 · Journal of Bone and Mineral Research

The relationship between thyrotoxicosis and osteoporotic fractures remains controversial, particularly in men. Register-based cohort study including all patients with a serum thyrotropin (TSH) measurement in the region of Funen 1996-2010.…

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Negative / Null Result ReportMedicine

Effects of Six versus Three Times per Week Hemodialysis on Physical Performance, Health, and Functioning

Yoshio N. Hall, Brett Larive, Patricia Painter et al. · 2012 · Clinical Journal of the American Society of Nephrology

BACKGROUND AND OBJECTIVES: Relatively little is known about the effects of hemodialysis frequency on the disability of patients with ESRD. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: This study examined changes in physical performance…

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Negative / Null Result ReportOpen accessMedicine

Pulmonary Hypertension in Patients with Chronic Fibrosing Idiopathic Interstitial Pneumonias

Marius M. Hoeper, Juergen Behr, Matthias Held et al. · 2015 · PLoS ONE

BACKGROUND: Pulmonary hypertension (PH) is a common finding in patients with chronic fibrosing idiopathic interstitial pneumonias (IIP). Little is known about the response to pulmonary vasodilator therapy in this patient population. COMPERA is an international registry that prospectively captures data from patients with various forms of PH receiving pulmonary vasodilator therapies. METHODS: We retrieved data from COMPERA to compare patient characteristics, treatment patterns, response to therapy and survival in newly diagnosed patients with idiopathic pulmonary arterial hypertension (IPAH) and

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Negative / Null Result ReportOpen accessMedicine

Randomized Phase III Study of FOLFOX Alone or With Pegilodecakin as Second-Line Therapy in Patients With Metastatic Pancreatic Cancer That Progressed After Gemcitabine (SEQUOIA)

J. Randolph Hecht, Sara Lonardi, Johanna C. Bendell et al. · 2021 · Journal of Clinical Oncology

PURPOSE SEQUOIA compared efficacy and safety of adding pegilodecakin (PEG), a pegylated recombinant human interleukin (IL)-10, with folinic acid, fluorouracil, and oxaliplatin (FOLFOX) in patients following progression on first-line…

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Negative / Null Result ReportMedicine

Recovery of Urinary Function After Radical Prostatectomy: Predictors of Urinary Function on Preoperative Prostate Magnetic Resonance Imaging

Christian von Bodman, Kazuhito Matsushita, Caroline Savage et al. · 2012 · The Journal of Urology

PURPOSE: We determined whether pelvic soft tissue and bony dimensions on endorectal magnetic resonance imaging influence the recovery of continence after radical prostatectomy, and whether adding significant magnetic resonance imaging…

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Negative / Null Result ReportOpen accessMedicine

Eslicarbazepine acetate as adjunctive therapy in patients with uncontrolled partial‐onset seizures: Results of a phase III, double‐blind, randomized, placebo‐controlled trial

Michael R. Sperling, Bassel Abou‐Khalil, Jay Harvey et al. · 2014 · Epilepsia

OBJECTIVE: To evaluate the efficacy and safety of adjunctive eslicarbazepine acetate (ESL) in patients with refractory partial-onset seizures. METHODS: This randomized, placebo-controlled, double-blind, parallel-group, phase III study was…

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Negative / Null Result ReportOpen accessMedicine

A multicenter randomized open-label clinical trial for convalescent plasma in patients hospitalized with COVID-19 pneumonia

C. Avendaño, António Ramos, Elena Múñez et al. · 2021 · Journal of Clinical Investigation

BACKGROUNDPassive immunotherapy with convalescent plasma (CP) is a potential treatment for COVID-19. Evidence from controlled clinical trials is inconclusive.METHODSWe conducted a randomized, open-label, controlled clinical trial at 27…

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Negative / Null Result ReportMedicine

Retinal nerve fibre layer and macular thickness in amblyopia as measured by spectral-domain optical coherence tomography

Christiane Al‐Haddad, Georges M. El Mollayess, Carol Cherfan et al. · 2011 · British Journal of Ophthalmology

BACKGROUND/AIMS: To study peripapillary retinal nerve fibre layer (RNFL) and macular thickness in amblyopia using high-definition spectral-domain optical coherence tomography (SD-OCT) and to compare the results with available literature…

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Negative / Null Result ReportOpen accessMedicine

Blood Biomarkers in Moderate-To-Severe Traumatic Brain Injury: Potential Utility of a Multi-Marker Approach in Characterizing Outcome

Alex P. Di Battista, John E. Buonora, Shawn G. Rhind et al. · 2015 · Frontiers in Neurology

BACKGROUND: Blood biomarkers are valuable tools for elucidating complex cellular and molecular mechanisms underlying traumatic brain injury (TBI). Profiling distinct classes of biomarkers could aid in the identification and characterization of initial injury and secondary pathological processes. This study characterized the prognostic performance of a recently developed multi-marker panel of circulating biomarkers that reflect specific pathogenic mechanisms including neuroinflammation, oxidative damage, and neuroregeneration, in moderate-to-severe TBI patients. MATERIALS AND METHODS: Periphera

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