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Browse the failure-mode index

21,252 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 Report

Autopsy of a failed extension policy

Bradley “Peanut” McCoy · 2022 · The Physics Teacher

There is a challenge as an instructor to balance the tension between flexibility and accountability in assignment due dates. I have long used an extension policy in my classes out of a desire to give students some flexibility on due dates.…

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Negative / Null Result Report

Lack of significant difference between internal spermatic vein and brachial vein ischemia modified albumin levels in patients with varicocele

Yuksel Aliyazicioglu, Emin Ozbek, Levent Ozcan et al. · 2013 · Archivio Italiano di Urologia e Andrologia

Varicocele is the most common and surgically correctible cause of male infertility in men attending to infertility clinics. Infertility affects 15% of all couples and male factor is the primary or contributing cause in 40% to 60% of cases.…

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Negative / Null Result Report

The Role of Entrepreneur Characteristics and Entrepreneur Motivation has a significant effect on SMEs' Business Performance During Digital Era

Heri Erlangga, Yanti Purwanti, Tita Setiawati et al. · 2021 · International Journal of Artificial Intelligence Research

The purpose of this study was to analyze the relationship between Entrepreneur Characteristics and Business Performance variables, the relationship between entrepreneurial motivation variables and MSME business performance. In this study…

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Negative / Null Result Report

Detection of recurrent brain tumors in children: No significant difference in sensitivity between unenhanced and contrast-enhanced MRI

Yasmina Bouzidi, Emmanuel Barteau, Julien Lejeune et al. · 2019 · The Neuroradiology Journal

Background Magnetic resonance imaging (MRI) with a gadolinium injection is currently used in the follow-up of children in remission of cerebral tumors (CTs). Intracerebral gadolinium deposition has been recently reported with unknown…

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Negative / Null Result Report

Determining Outcomes in Patients With Large Vessel Occlusion and Mild Stroke Who Did or Did Not Receive Thrombolytics and/or Thrombectomy

Cleo Zarina A. Reyes, Ramiro Gabriel Castro-Apolo, Hope Kincaid et al. · 2024 · The Neurologist

Objectives: The utility of thrombolysis and/or thrombectomy in patients with mild stroke and large vessel occlusion (LVO) remains inconclusive. This retrospective study compared short-term and long-term outcomes in patients treated with…

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Negative / Null Result Report

Abstract P1-11-02: A comparison of models (physician, the Van Nuys prognostic index, the Memorial-Sloan-Kettering Cancer Center DCIS nomogram)to predict ipsilateral breast events in patients with ductal carcinoma in situ (DCIS) of the breast after breast-conserving surgery failed to replicate results of the oncotype DCIS recurrence score

C Leonard, R Lei, A Antell et al. · 2017 · Cancer Research

Abstract Purpose: To compare ipsilateral breast event (IBE) risks in patients with DCIS of the breast post-lumpectomy, as estimated by breast radiation oncologists, the Van Nuys Prognostic Index (VNPI) studies, the Memorial Sloan Kettering…

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Negative / Null Result Report

There is no significant difference in the treatment of aspiration pneumonia in dogs with ampicillin-sulbactam versus ampicillin-sulbactam and enrofloxacin

Cody I. Riffe, Justin A. Heinz, Carly A. Patterson et al. · 2025 · Journal of the American Veterinary Medical Association

Abstract Objective Describe outcomes for dogs with aspiration pneumonia (AP) initially treated with ampicillin-sulbactam (AS) alone (monotherapy [MT]), initially with AS and enrofloxacin (initial dual therapy [iDT]), or initially with AS…

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Negative / Null Result Report

Optimization of Tempering Process Parameters of AISI 3140 Low Alloy Steel to Conserve Furnace Energy using Tukey’s Honestly Significant Difference Test

SK Lakshmana Moorthy, S Rajaram, PC Santhosh Kumar · 2020 · IOP Conference Series: Earth and Environmental Science

Abstract Quenching and Tempering of AISI 3140 alloy steel is a necessary heat treatment process to attain desired hardness and toughness. However the tempering process consumes remarkable amount of energy in furnace. One of the usual…

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Negative / Null Result Report

‘My Contributions Made a Significant Difference’: Young Carers’ Reflections on Their Participation in Social Work Admissions

Andrea Newman, Bridgit Carey, Malcolm Kinney · 2021 · The British Journal of Social Work

Abstract Whilst the participation of service users and carers (SUCs) in Social Work admissions (SWAs) has significantly developed over the past decades, concerns have been raised about the tokenistic nature of SUC involvement (Barnes, D.,…

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Negative / Null Result Report

The Minimum Clinically Significant Difference in Acute Nontraumatic Thoracoabdominal Pain in Adult Emergency Department Patients in Turkey

V Degerli, O Karcioglu, GL Larkin et al. · 2012 · Hong Kong Journal of Emergency Medicine

Objectives To determine the minimum clinically significant difference (MCSD) in visual analog scale (VAS) pain scores for acute non‐traumatic thoracoabdominal pain (TAP) in the emergency department (ED) and to determine its association…

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Negative / Null Result Report

Statistical Analysis of the Number of Infections with Corona Virus in Some Arab Countries Using the Method of Least Significant Difference

Hadeel Alkutubi, Rania Abod, Omaima Jabber · 2022 · Journal of Kufa for Mathematics and Computer


 
 
 In this research, we applied actual data related to the number of infections with the Corona virus for some Arab countries for the month of February of the year 2022, where the method of least significant difference…

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Negative / Null Result Report

Ukuran mesiodistal dan servikoinsisal gigi insisivus sentralis suku Bugis, Makassar, dan Toraja tidak menunjukkan perbedaan yang bermakna Size of mesiodistal and cervicoincisal maxillary central incisors between Buginese, Makassarese, and Torajanese showed no significant difference

Irene Edith Rieuwpassa, Nurlindah Hamrun, Fitrian Riksavianti · 2013 · Journal of Dentomaxillofacial Science

Every tribe and race has size of tooth mesiodistal and cervicoincisal different from each other. The most obviousdifference is the size of the teeth between female and male. This study aimed to determine differences in size ofmesiodistal…

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Negative / Null Result Report

A Comparative Study of Coronary Sinus Flow in Normal Healthy Controls with that of Patients of ST Segment Elevation Myocardial Infarction and Significant Coronary Artery Disease by Transthoracic Echocardiography. Is there any Gender Difference?

Sashmi Prabha Sethi, Chhabi Satpathy, Trinath Kumar Mishra · 2025 · Indian Journal of Cardiovascular Disease in Women

Objectives: The objective of the study is to estimate the coronary sinus flow in patients of ST segment elevation myocardial infarction with significant stenosis of coronary arteries, using transthoracic echocardiography (TTE) is our…

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Negative / Null Result Report

Affordance and ability

Jean-Marie Marandin · 2011 · Belgian Journal of Linguistics

This paper addresses epistemological issues raised by the use of elicited data in linguistic analyses. A common suspicion raised by experimental settings is this: participants in the lab do not replicate their everyday use of language, due…

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Negative / Null Result Report

Does First Metatarsal Head Lowering During Minimally Invasive Chevron Akin Osteotomy Yield No Significant Difference in Patient-reported Outcomes Compared With Second Distal Metatarsal Minimally Invasive Osteotomy for Treating Intractable Plantar Keratosis?

Jun Young Choi, Young Yi, Seung Myung Choi et al. · 2026 · Clinical Orthopaedics & Related Research

Background Hallux valgus is a common forefoot deformity that alters forefoot loading and often leads to secondary complications such as intractable plantar keratosis beneath the second metatarsal head. Although the link between hallux…

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