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Browse the failure-mode index

21,222 real negative results, null findings, and replication failures. 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 ReportMedicine

Significant differences in coeliac immunotoxicity of barley varieties

Isabel Comino, Ana Real, Javier Gil‐Humanes et al. · 2012 · Molecular Nutrition & Food Research

SCOPE: The only treatment available for coeliac disease (CD) is a strict diet in which the intake of wheat, barley, rye, or oats is avoided. Barley is a major cereal crop, grown mainly for its use in brewing, and it has high nutritional…

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Negative / Null Result ReportOpen accessSocial Sciences

No Significant Difference in Service Learninng Online

Sue Y. McGorry · 2012 · Online Learning

Institutions of higher education are realizing the importance of service learning initiatives in developing awareness of students’ civic responsibilities, leadership and management skills, and social responsibility. These skills and…

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Methods Dead-EndOpen accessEnvironmental Science

Digital Mapping of Soil Properties Using Ensemble Machine Learning Approaches in an Agricultural Lowland Area of Lombardy, Italy

Odunayo David Adeniyi, Alexander Brenning, Alice Bernini et al. · 2023 · Land

Sustainable agricultural landscape management needs reliable and accurate soil maps and updated geospatial soil information. Recently, machine learning (ML) models have commonly been used in digital soil mapping, together with limited data, for various types of landscapes. In this study, we tested linear and nonlinear ML models in predicting and mapping soil properties in an agricultural lowland landscape of Lombardy region, Italy. We further evaluated the ability of an ensemble learning model, based on a stacking approach, to predict the spatial variation of soil properties, such as sand, sil

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Negative / Null Result ReportOpen accessPsychology

Distributional Learning of Lexical Tones: A Comparison of Attended vs. Unattended Listening

Jia Hoong Ong, Denis Burnham, Paola Escudero · 2015 · PLoS ONE

This study examines whether non-tone language listeners can acquire lexical tone categories distributionally and whether attention in the training phase modulates the effect of distributional learning. Native Australian English listeners were trained on a Thai lexical tone minimal pair and their performance was assessed using a discrimination task before and after training. During Training, participants either heard a Unimodal distribution that would induce a single central category, which should hinder their discrimination of that minimal pair, or a Bimodal distribution that would induce two

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Negative / Null Result ReportOpen accessMedicine

Machine learning versus logistic regression for the prediction of complications after pancreatoduodenectomy

Erik W. Ingwersen, Wessel T. Stam, Bono J.V. Meijs et al. · 2023 · Surgery

BACKGROUND: Machine learning is increasingly advocated to develop prediction models for postoperative complications. It is, however, unclear if machine learning is superior to logistic regression when using structured clinical data. Postoperative pancreatic fistula and delayed gastric emptying are the two most common complications with the biggest impact on patient condition and length of hospital stay after pancreatoduodenectomy. This study aimed to compare the performance of machine learning and logistic regression in predicting pancreatic fistula and delayed gastric emptying after pancreato

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Negative / Null Result ReportMedicine

No Significant Association Between Genetic Variants in 7 Candidate Genes and Response to Methylphenidate Treatment in Adult Patients With ADHD

Verônica Contini, Marcelo M. Victor, Guilherme Pinto Bertuzzi et al. · 2012 · Journal of Clinical Psychopharmacology

Results from pharmacogenetic investigations of methylphenidate (MPH) response in patients with ADHD are still inconsistent, especially among adults. This study investigates the role of genetic variants (SLC6A4, HTR1B, TPH2, DBH, DRD4,…

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Negative / Null Result ReportOpen accessPsychology

The neuropsychological profile of professional action video game players

Julie Justine Benoit, Eugenie Roudaia, Taylor Johnson et al. · 2020 · PeerJ

In the past 20 years, there has been growing research interest in the association between video games and cognition. Although many studies have found that video game players are better than non-players in multiple cognitive domains, other studies failed to replicate these results. Until now, the vast majority of studies defined video game players based on the number of hours an individual spent playing video games, with relatively few studies focusing on video game expertise using performance criteria. In the current study, we sought to examine whether individuals who play video games at a pro

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Negative / Null Result ReportOpen accessEnvironmental Science

Functional diversity of soil microbial communities increases with ecosystem development

Tord Ranheim Sveen, Maria Viketoft, Jan Bengtsson et al. · 2025 · Nature Communications

Land abandonment is the single largest process of land-use change in the Global North driving succession and afforestation at continental scales, but assessing its impacts on soil microbial communities remains a challenge. Here, we establish a nationwide successional gradient of paired grassland and forest sites to track developments in microbial structure and functioning following land abandonment and gradual land-use change to forests. We show that microbes generally respond through threshold dynamics, leading to increasing functional but decreasing taxonomic diversity. Succession also entai

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Negative / Null Result ReportOpen accessEconomics, Econometrics and Finance

Assessing the Impact of Green Energy Transition, Technological Innovation, and Natural Resources on Load Capacity Factor in Algeria: Evidence from Dynamic Autoregressive Distributed Lag Simulations and Machine Learning Validation

Brahim Bergougui, Said Meziane · 2025 · Sustainability

Algeria’s resource-dependent economy faces significant challenges in balancing hydrocarbon reliance with environmental sustainability, yet existing research largely overlooks the comprehensive load capacity factor (LCF) metric in favor of traditional emissions analyses. This study examines the relationships between the LCF and key economic–environmental factors in Algeria from 1980 to 2023, including total natural resource rents, energy transition, technological innovation, GDP, primary energy consumption, and urbanization. Using ARDL and DARDL econometric approaches complemented by a kernel-b

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Negative / Null Result ReportOpen accessMedicine

The impaired response of nasal epithelial cells to microplastic stimulation in asthma and COPD

Magdalena Paplińska‐Goryca, Paulina Misiukiewicz‐Stępień, Monika Wróbel et al. · 2025 · Scientific Reports

Microplastic particles from the air are inhaled and accumulate in the lungs, potentially causing immunological reactions and airway tissue injury. This study aimed to evaluate the biological effects of polyamide fibres on nasal epithelium…

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Negative / Null Result ReportOpen accessMedicine

NEWS 2 – too little evidence to implement?

Luke Hodgson, Jo Congleton, Richard Venn et al. · 2018 · Clinical Medicine

ABSTRACT The Royal College of Physicians (RCP) recently published the National Early Warning Score 2 (NEWS2), aiming to improve safety for patients with hypercapnic respiratory failure by suggesting a separate oxygen saturation (SpO2)…

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Negative / Null Result ReportOpen accessMathematics

Learning data science in elementary school mathematics: a comparative curriculum analysis

Yook Kit Ow-Yeong, Ibrahim H. Yeter, Farhan Ali · 2023 · International Journal of STEM Education

Abstract Background Data literacy is increasingly important in today’s data-driven world. Students across many educational systems first formally learn about data in elementary school not as a separate subject but via the mathematics curriculum. This experience can create tensions in the priorities of learning and assessment given the presence of other foundational mathematics content domains such as numbers, algebra, measurement, and geometry. There is a need to study data literacy in comparison to these other content domains in elementary mathematics. To address this need, we developed a met

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Negative / Null Result ReportOpen accessEnvironmental Science

Effects of Total Resources, Resource Ratios, and Species Richness on Algal Productivity and Evenness at Both Metacommunity and Local Scales

Lars Gamfeldt, Helmut Hillebrand · 2011 · PLoS ONE

The study of the interrelationship between productivity and biodiversity is a major research field in ecology. Theory predicts that if essential resources are heterogeneously distributed across a metacommunity, single species may dominate productivity in individual metacommunity patches, but a mixture of species will maximize productivity across the whole metacommunity. It also predicts that a balanced supply of resources within local patches should favor species coexistence, whereas resource imbalance would favor the dominance of one species. We performed an experiment with five freshwater al

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Negative / Null Result ReportBiochemistry, Genetics and Molecular Biology

Testosterone measured from amniotic fluid and maternal plasma shows no significant association with directional asymmetry in newborn digit ratio (2D:4D)

Gareth Richards, Manuel C. Gomes, T. Ventura · 2018 · Journal of Developmental Origins of Health and Disease

Foetal sex hormones can have powerful and far-reaching effects on later phenotype. However, obtaining accurate measurements is difficult for ethical reasons, and researchers often employ proxy variables to examine their effects. The…

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Negative / Null Result ReportOpen accessComputer Science

Aligning learning design and learning analytics through instructor involvement: a MOOC case study

Erkan Er, Eduardo Gómez‐Sánchez, Yannis Dimitriadis et al. · 2019 · Interactive Learning Environments

This paper presents the findings of a mixed-methods research that explored the potentials emerging from aligning learning design (LD) and learning analytics (LA) during the design of a predictive analytics solution and from involving the…

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Negative / Null Result Report

Addition of Inflammatory Biomarkers Did Not Improve Diabetes Prediction in the Community: The Framingham Heart Study

Dhayana Dallmeier, Martin G. Larson, Na Wang et al. · 2012 · Journal of the American Heart Association

Background Prior studies have reported conflicting findings with regard to the association of biomarkers in the prediction of incident type 2 diabetes. We evaluated 12 biomarkers as possible diabetes predictors in the F ramingham H eart S…

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Negative / Null Result ReportOpen accessMedicine

Adding Concurrent Chemotherapy to Intensity-Modulated Radiotherapy Does Not Improve Treatment Outcomes for Stage II Nasopharyngeal Carcinoma: A Phase 2 Multicenter Clinical Trial

Xiaodong Huang, Xiaozhong Chen, Chong Zhao et al. · 2020 · Frontiers in Oncology

Purpose: To explore the efficacy of concomitant chemotherapy in intensity-modulated radiotherapy(IMRT) to treat stage II nasopharyngeal carcinoma (NPC). Methods and Materials: In this randomized phase 2 study (registered with ClinicalTrials.gov, (NCT01187238)), eligible patients with stage II (2010 UICC/AJCC) NPC were randomly assigned to either IMRT alone (RT group) or IMRT combined with concurrent cisplatin (40 mg/m2, weekly) (CCRT group). The primary endpoint was overall survival (OS). The second endpoints included local failure-free survival (LFFS), regional failure-free survival (RFFS), d

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Negative / Null Result ReportMedicine

Full investigation of patients with polycystic ovary syndrome (PCOS) presenting to four different clinical specialties reveals significant differences and undiagnosed morbidity

Dhakshana Sivayoganathan, Deivanayagam Maruthini, Julie Glanville et al. · 2011 · Human Fertility

OBJECTIVE: This study aimed to compare the spectrum of polycystic ovary syndrome (PCOS) symptoms in patients from four different specialist clinics. DESIGN: A prospective cross-sectional observational study. SETTING: The study was…

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Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

Metformin Treatment Does Not Inhibit Growth of Pancreatic Cancer Patient-Derived Xenografts

Matthew B. Lipner, Raoud Marayati, Yangmei Deng et al. · 2016 · PLoS ONE

There is currently tremendous interest in developing anti-cancer therapeutics targeting cell signaling pathways important for both cancer cell metabolism and growth. Several epidemiological studies have shown that diabetic patients taking metformin have a decreased incidence of pancreatic cancer. This has prompted efforts to evaluate metformin, a drug with negligible toxicity, as a therapeutic modality in pancreatic cancer. Preclinical studies in cell line xenografts and one study in patient-derived xenograft (PDX) models were promising, while recently published clinical trials showed no benef

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Negative / Null Result ReportOpen accessMedicine

A 6-month, subject-masked, randomized controlled study to assess efficacy of dexamethasone as an adjunct to bevacizumab compared with bevacizumab alone in the treatment of patients with macular edema due to central or branch retinal vein occlusion

Michael Stewart, Raj K. Maturi, Vincent Chen et al. · 2014 · Clinical ophthalmology

AIMS: To determine if intravitreal bevacizumab combined with the dexamethasone intravitreal implant 0.7 mg improves visual acuity and macular thickness more than bevacizumab monotherapy in eyes with macular edema due to branch and central…

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Negative / Null Result ReportOpen accessMedicine

Outcomes of synchronous systemic and central nervous system (CNS) involvement of diffuse large B‐cell lymphoma are dictated by the CNS disease: a collaborative study of the Australasian Lymphoma Alliance

Joel Wight, Mimi Yue, Colm Keane et al. · 2019 · British Journal of Haematology

De novo diffuse large B-cell lymphoma (DLBCL) presenting with synchronous central nervous system (CNS) and systemic disease (synDLBCL) is not well described and is excluded from clinical trials. We performed a retrospective analysis of 80…

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Negative / Null Result ReportOpen accessEnvironmental Science

Weather and food availability additively affect reproductive output in an expanding raptor population

Melanie Nägeli, Patrick Scherler, Stephanie Witczak et al. · 2021 · Oecologia

The joint effects of interacting environmental factors on key demographic parameters can exacerbate or mitigate the separate factors' effects on population dynamics. Given ongoing changes in climate and land use, assessing interactions between weather and food availability on reproductive performance is crucial to understand and forecast population dynamics. By conducting a feeding experiment in 4 years with different weather conditions, we were able to disentangle the effects of weather, food availability and their interactions on reproductive parameters in an expanding population of the red

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Negative / Null Result ReportOpen accessMedicine

Efficacy and safety of chronomodulated irinotecan, oxaliplatin, 5‐fluorouracil and leucovorin combination as first‐ or second‐line treatment against metastatic colorectal cancer: Results from the International EORTC 05011 Trial

Pasquale F. Innominato, Abdoulaye Karaboué, C. Focan et al. · 2020 · International Journal of Cancer

The triplet combination of irinotecan, oxaliplatin and fluorouracil is an active frontline regimen in metastatic colorectal cancer, but scarce data exist on its use as salvage treatment. We aimed at assessing its safety and efficacy profiles with its circadian-based administration (chronoIFLO5) as either first- or second-line treatment, within the time-finding EORTC 05011 trial. Five-day chronoIFLO5 was administered every 3 weeks in patients with PS 0, 1 or 2. It consisted of chronomodulated irinotecan (180 mg/sqm), oxaliplatin (80 mg/sqm) and fluorouracil-leucovorin (2800 and 1200 mg/sqm, res

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Negative / Null Result ReportOpen accessMedicine

Glaucoma-Associated Mutations in the Optineurin Gene Have Limited Impact on Parkin-Dependent Mitophagy

Kseniia Chernyshova, Keiichi Inoue, Shun‐ichi Yamashita et al. · 2019 · Investigative Ophthalmology & Visual Science

Purpose: Glaucoma results in progressive degeneration of the optic nerve and irreversible vision loss. Several mutations in the gene encoding optineurin (OPTN), the receptor for Parkin-dependent mitochondrial autophagy (mitophagy), are…

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Negative / Null Result ReportOpen accessSocial Sciences

Does Severity of Physical Neglect Moderate the Impact of an Efficacious Preventive Intervention for Maltreated Children in Foster Care?

Heather N. Taussig, Sara E. Culhane, Edward F. Garrido et al. · 2012 · Child Maltreatment

Physically neglected youth are at increased risk of mental health problems, but there are few interventions that have demonstrated efficacy in reducing mental health symptoms for this vulnerable population. The Fostering Healthy Futures…

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Negative / Null Result ReportEnvironmental Science

New cloud and microphysics parameterisation for use in high‐resolution dynamical downscaling: application for summer extreme temperature over Belgium

Rafiq Hamdi, Hans Van de Vyver, Piet Termonia · 2011 · International Journal of Climatology

Abstract We explore the use of high‐resolution dynamical downscaling as a means to simulate extreme values of summer maximum surface air temperature over Belgium ( T MAX ). We use the limited area version of the ARPEGE‐IFS model, ALADIN.…

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