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Failure-mode index

Search what already failed

A searchable index of real negative results, null findings, and replication failures from the published literature — so you can learn what didn't work before repeating it.

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record (title, authors, DOI) compiled from open scholarly databases, with the abstract shown in full only where the paper is openly licensed (e.g. Creative Commons); otherwise a short excerpt is shown for reference under fair use. WASTE classifies each work by failure type; classifications are automated and approximate.

20253 results in Negative / Null Result Report · page 450 of 676

Negative / Null Result Report

Extension of Fisher’s least significant difference method to multi-armed group-sequential response-adaptive designs

Wenyu Liu, D Stephen Coad · 2025 · Statistical Methods in Medical Research

Multi-armed multi-stage designs evaluate experimental treatments using a control arm at interim analyses. Incorporating response-adaptive randomisation in these designs allows early stopping, faster treatment selection and more patients to…

View details →DOI: 10.1177/09622802251319896
Negative / Null Result Report

STUDY OF SIGNIFICANT DIFFERENCE CONSIDERING PERSONAL TUITION AND PARENTAL CARE IN RELATION TO ACHIEVEMENT AND ATTITUDE TOWARDS ENGLISH AMONG SENIOR SECONDARY STUDENTS

Wangnen Lampa, Geyin Boli, Boa Reena Tok · 2024 · GLOBAL JOURNAL FOR RESEARCH ANALYSIS

The present study focuses on nding out how senior secondary students of Tirap district, Arunachal Pradesh, India are performing in English and to nd out the signicant difference in the attitude and achievement levels of these students…

View details →DOI: 10.36106/gjra/4003742
Negative / Null Result Report

FP10.6 Hip Arthroscopy for Femoroacetabular Impingement Syndrome Demonstrates Significant Improvements in Patient-Reported Outcomes with No Difference in Reoperation Rates in Patients Over 50-Years Old at Minimum 10-Year Follow-Up

Larry Chen, Emily Berzolla, Griffith Gosnell et al. · 2025 · Journal of Hip Preservation Surgery

Abstract Background While hip arthroscopy (HA) has improved outcomes in femoroacetabular impingement syndrome (FAIS), advanced age has been considered a negative predictor of outcomes. The purpose of this study was to evaluate long-term…

View details →DOI: 10.1093/jhps/hnaf069.053
Negative / Null Result Report

Significant Vertical Difference in Aerosol Chemistry Within Urban Boundary Layer Triggered by Cold‐Air Pool: Insights From Simultaneous Mountain‐Valley Measurements

Xinghua Zhang, Jianzhong Xu, Chongshui Gong et al. · 2025 · Journal of Geophysical Research: Atmospheres

Abstract Valley‐basin terrains represent one of Earth's most prominent landforms and host numerous urban settlements. However, these topographically constrained regions frequently experience severe winter aerosol pollution. One critical…

View details →DOI: 10.1029/2025jd044392
Negative / Null Result Report

Abstract HUP7: Significant Difference in Stroke Knowledge by Race: Evidence from the Time is Brain Observational Study

Ian Johnson, Hailey Brigger, Annabelle Shanks et al. · 2026 · Stroke

Introduction: Stroke education is a key determinant of timely hospital arrival. While considerable evidence indicates that Black patients experience greater prehospital delay, few studies have investigated whether these gaps extend to…

View details →DOI: 10.1161/str.57.suppl_1.hup7
Negative / Null Result ReportMedicine

Clinical Implications of ChatGPT-assisted Multimodal Pre-operative Assessment in Elderly Pertrochanteric Fracture Patients: An Exploratory Study.

Noda, Takahara, Hayashi et al. · 2026 · Journal of orthopaedic case reports

Given the high mortality associated with femoral trochanteric fractures, reliable pre-operative estimation of post-operative death risk is essential. Commonly used scoring systems demonstrate only moderate predictive ability, largely…

View details →DOI: 10.13107/jocr.2026.v16.i06.7428
Negative / Null Result Report

Is there any significant difference between tumor regression grade systems of rectal cancer?

Atthaphorn Trakarnsanga, Mithat Gonen, Jinru Shia et al. · 2012 · Journal of Clinical Oncology

3583 Background: Tumor regression grade (TRG) is a measure of histopathologic response of rectal cancer to preoperative chemoradiation (CRT) and correlates with outcomes. Several TRG systems have been reported including Mandard (5, 3…

View details →DOI: 10.1200/jco.2012.30.15_suppl.3583
Negative / Null Result Report

Influence of significant difference in diameters of ureters on the possibility and effectiveness of ureteroureterostomy in the treatment of obstructive uropathies of the duplicated kidney

Iliya M. Kagantsov, Evgeniya A. Kondrateva, Svetlana A. Karavaeva et al. · 2024 · Urology reports (St. - Petersburg)

BACKGROUND: Laparoscopic ureteroureterostomy is increasingly used as a surgical correction method for obstructive uropathies of the duplicated kidney. A complicating factor for this technique may be a significant difference between the…

View details →DOI: 10.17816/uroved626646
Negative / Null Result ReportOpen accessComputer Science

Searching for dynamical fermion effects in UKQCD simulations

Chris Allton · 2001 · arXiv

We present recent results from the UKQCD collaboration's dynamical QCD simulations. This data has fixed lattice spacing but varying dynamical quark mass. We concentrate on searching for an unquenching signal in the mesonic mass spectrum where we do not find a significant effect at the quark masses considered.

Negative / Null Result Report

Is There a Significant Difference in Acute Kidney Injury Incidence Among Patients Treated with Vancomycin Combined with Cefepime or Meropenem?

W Cliff Rutter, David S Burgess · 2017 · Open Forum Infectious Diseases

Abstract Background Acute kidney injuries (AKIs) are common among patients receiving concomitant vancomycin (VAN) and piperacillin-tazobactam, especially compared with cefepime (FEP) with vancomycin. It is unknown if there is a significant…

View details →DOI: 10.1093/ofid/ofx163.803
Negative / Null Result Report

Stability of Nonhyperbolic Equilibrium Solution of Second Order Nonlinear Rational Difference Equation

S. Atawna, R. Abu-Saris, E. S. Ismail et al. · 2015 · Journal of Difference Equations

This is a continuation part of our investigation in which the second order nonlinear rational difference equation x n + 1 = ( α + β x n + γ x n - 1 ) / ( A + B x n + C x n - 1 ) , n = 0 , 1 , 2 , … , where the parameters A ≥ 0 and B , C ,…

View details →DOI: 10.1155/2015/486985
Negative / Null Result Report

Dacryocystorhinostomy With and Without Silicone Stent: Is There Any Significant Difference into the Outcomes?

Alfred Aga, Klaudia Stajka · 2022 · Interdisciplinary Journal of Research and Development

Aim: To compare the difference between the outcomes of endonasal endoscopic dacryocystorhinostomy (En-DCR) with and without silcone tube intubation (stent) for treatment of primary dacryocystitis and phlegmonus dacryocystitis. Method: A…

View details →DOI: 10.56345/ijrdv9n4s219
Negative / Null Result Report

The borderline effect for diabetes: when no difference makes a difference

Peter Aungle, Ellen Langer · 2024 · Frontiers in Psychology

We hypothesized that people at the borderline of being labeled as “prediabetic” based on A1c blood test results, who initially face equivalent risks of developing diabetes but who are labeled differently, would be more likely to develop…

View details →DOI: 10.3389/fpsyg.2024.1333248
Negative / Null Result Report

EP.TU.296A Significant Difference in Cancer Proportions Between Two Modelled Cohorts Investigated by 2-WeekWait (2WW) Colorectal referral pathway

A Gendia, A Tam, W Faux · 2021 · British Journal of Surgery

Abstract Aim To compare the proportions of malignancy between two modelled cohorts of referred and investigated by our colorectal 2 WW referrals pathway. Methods Two modelled cohorts were analysed from our prospectively maintained…

View details →DOI: 10.1093/bjs/znab311.038
Negative / Null Result Report

The Significant Difference with the Relationships of T2 and Moisture Distribution between Untreated and Esterified Poplar

Xiang Jun Wang, Ming Hui Zhang, Xi Ming Wang · 2011 · Materials Science Forum

the moisture distribution in untreated and esterified poplar with Maleic anhydride was studied in the present paper employed nuclear magnetic resonance (NMR). The results show that relaxation times decrease with the the fall of moisture…

View details →DOI: 10.4028/www.scientific.net/msf.704-705.446
Negative / Null Result Report

Deleuze and New Materialism

A. Janae Sholtz · 2025 · Philosophy Today

Deleuze and Guattari provide a sophisticated account of ontological relationality, many facets of which have been annexed into new materialist theory. It is worth asking how this happens and with what degree of accuracy. Deleuze’s…

View details →DOI: 10.5840/philtoday2025626569
Negative / Null Result Report

“Scratch a Russian, Find a Turk”

Charles J. Halperin · 2018 · Russian History

In this first-rate monograph, Cornelia Soldat confirms earlier impressionistic assertions that the portrayal of Ivan iv as a tyrant and the Muscovites as barbarians in German-language pamphlets (Flugschriften) written as propaganda during…

View details →DOI: 10.1163/18763316-04504004
Negative / Null Result Report

ФИЗИОЛОГИЧЕСКИ ЗНАЧИМЫЕ ПАРАМЕТРЫ ТРОМБОЦИТОВ У ПОРОСЯТ МОЛОЧНО-РАСТИТЕЛЬНОГО ПИТАНИЯ

Завалишина С.Ю., Ткачева Е.С. · 2019 · Зоотехния

Большой физиологической важностью в организме поросят обладают тромбоциты, являющиеся важным компонентом системы поддержания гомеостаза. Их функциональные свойства в значительной степени определяют процессы гемоциркуляции в просвете…

View details →DOI: 10.25708/zt.2019.55.41.005
Negative / Null Result Report

Comparison of insulin resistance and lipid profile in clinically significant macular oedema versus non-clinically significant macular oedema in patients with type 2 diabetes mellitus

· 2025 · International Journal of Medicine and Medical Research

Lifestyle-related disorders, particularly diabetes, pose a significant global health challenge. Diabetic macular oedema, a microvascular complication, highlights the importance of managing insulin resistance and hyperlipidaemia for optimal…

View details →DOI: 10.63341/ijmmr/1.2025.22
Negative / Null Result Report

ChatGPT: Significant Systemic Limitations and Opportunities for Improvement

Rosario Milelli · 2026 · Journal of Artificial Intelligence, Virtual Reality, and Human-Centered Computing

ChatGPT, developed by OpenAI, has become a central tool in my professional workflow, supporting scholarly research, editorial writing, and creative projects. Drawing on extensive practical use, this perspective highlights both its…

View details →DOI: 10.66311/3069-2318.02.01.02
Negative / Null Result Report

СОЦИАЛЬНО ЗНАЧИМЫЕ КАЧЕСТВА ЛИЧНОСТИ УЧАСТНИКОВ ОБЪЕДИНЕНИЯ «ВОЛОНТЕРЫ ПОБЕДЫ»

Е.Н. Малова · 2019 · Бизнес. Образование. Право

Актуальность определена существенными изменениями социокультурной, экономической, образовательной ситуации в стране и потребностями общества в развитии социально активной молодежи. Волонтерство добровольная безвозмездная социально значимая…

View details →DOI: 10.25683/volbi.2019.49.471
Negative / Null Result Report

Hayaller-hayatlar: Turizm öğrencileri ne umdu ne buldu?

Abdullah Ülkü · 2025 · Business & Management Studies: An International Journal

This study aims to examine the career perceptions and attitudes of tourism students and graduates, identifying the differences between their expectations before graduation and their experiences in the workforce. A quantitative approach was…

View details →DOI: 10.15295/bmij.v13i3.2603
Negative / Null Result Report

Value Orientation and Significant Insights as well as Critical Review on Major Challenges and Significant Opportunities on Commerce and Management Education in India

Mahadevappa Hanchinamani · 2022 · International Journal of Research Publication and Reviews

It has been widely debated that while scholars like Nitin Nohria Dean Harvard Business School from Indian origin are leading the world’s top B-Schools; BSchools in India are struggling to find a place among the Top 100 Global Institutions.…

View details →DOI: 10.55248/gengpi.2022.3.9.31
Negative / Null Result Report

Endogenous and exogenous succinate: what is significant functional difference? Or is it not?

Yu.P. Orlov, A.Yu. Petrov, A.L. Kovalenko · 2025 · Russian Journal of Anesthesiology and Reanimatology

This review is devoted to physiological and pathophysiological role of endogenous and exogenous succinate in ensuring effective oxidative phosphorylation process in mitochondrial respiratory chain. The last one ensures synthesis of…

View details →DOI: 10.17116/anaesthesiology2025061125