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Browse the failure-mode index

21,247 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

Medicaid Family Planning Waivers in 3 States

E. Kathleen Adams, Katya Galactionova, Genevieve M. Kenney · 2015 · INQUIRY: The Journal of Health Care Organization, Provision, and Financing

Effects of Medicaid family planning waivers on unintended births and contraceptive use postpartum were examined in Illinois, New York, and Oregon using the Pregnancy Risk Assessment Monitoring System. Estimates for women who would be…

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Negative / Null Result Report

Multimodal analgesia did not improve post‐operative pain scores, reduce opioid consumption or reduce length of stay following hip arthroscopy

Ryan M. Degen, Andrew Firth, Herman Sehmbi et al. · 2023 · Knee Surgery, Sports Traumatology, Arthroscopy

Abstract Purpose To determine whether different regimens of multimodal analgesia will reduce postoperative pain scores, opioid consumption, costs and hospital length‐of‐stay following hip arthroscopy. Methods From 2018 to 2021, 132…

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Negative / Null Result Report

Cooperatives and sustainability drivers in the Spanish wine sector. What differences do we find with investor owner firms?

Juan Ramón Ferrer, María‐Carmen García‐Cortijo, Juan‐Sebastián Castillo Valero et al. · 2023 · Annals of Public and Cooperative Economics

Abstract The fight against climate change has become a basic vector for agri‐food business strategies. In Spain, commercial wineries (Investor Owner Firms, IOFs) and cooperatives are facing major challenges in adapting to the most…

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Negative / Null Result Report

STABILIZER

Charlie Curtsinger, Emery D. Berger · 2013 · ACM SIGPLAN Notices

Researchers and software developers require effective performance evaluation. Researchers must evaluate optimizations or measure overhead. Software developers use automatic performance regression tests to discover when changes improve or…

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Negative / Null Result Report

Evaluation Methods for Statistically Dependent Text

Sarvnaz Karimi, Jie Yin, Jiri Baum · 2015 · Computational Linguistics

In recent years, many studies have been published on data collected from social media, especially microblogs such as Twitter. However, rather few of these studies have considered evaluation methodologies that take into account the…

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Negative / Null Result Report

Comparison of AI ‐Generated and Instructor Feedback: No Significant Difference in Perceived Feedback Quality and Neither on Performance

Şeyma Çağlar‐Özhan, Perihan Tekeli, Selay Arkün‐Kocadere · 2025 · Journal of Computer Assisted Learning

ABSTRACT Background Feedback is an essential part of the educational process as it enriches students' learning experiences, provides information about their current performance, shows them what is lacking in achieving goals, and provides…

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Negative / Null Result Report

Data protection concerns are a statistically significant reason for refusal: Exploratory study of the patient perspective on telemedicine services based on 735 gynecological surgery patients

Sascha Hoffmann, Marina Ott, Franziska Bobbert et al. · 2024 · DIGITAL HEALTH

Objective Internet-based healthcare is a crucial facet of telemedicine. Here, we examine telemedicine methods in perioperative care for gynecological surgery from a patient's perspective. We aim to understand the patients’ needs during…

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Negative / Null Result Report

Hubble diagrams in statistically homogeneous, anisotropic universes

Theodore Anton, Timothy Clifton · 2024 · Journal of Cosmology and Astroparticle Physics

Abstract We consider the form of Hubble diagrams that would be constructed by observers in universes that are homogeneous but anisotropic, when averaged over suitably large length-scales. This is achieved by ray-tracing in different…

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Negative / Null Result Report

Where do we expect to find deep plant roots?

G. Annie Mailloux, Mazvita Chikomo, Ying Fan · 2025 · Ecography

Plant roots have been observed up to 70 m in depth – what would compel a plant to root so deeply? Earlier work shows that the climate, soil and drainage all affect rooting depth, but with conflicting results. For example, both the deepest…

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Negative / Null Result Report

No significant difference in intermediate key outcomes in men with low- and intermediate-risk prostate cancer managed by active surveillance

Karolina Cyll, Sven Löffeler, Birgitte Carlsen et al. · 2022 · Scientific Reports

Abstract Active surveillance (AS) is standard of care for patients with low-risk prostate cancer (PCa), but its feasibility in intermediate-risk patients is controversial. We compared outcomes of low- and intermediate-risk patients managed…

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Negative / Null Result Report

Mining Statistically Significant Patterns with High Utility

Huijun Tang, Jiangbo Qian, Yangguang Liu et al. · 2022 · International Journal of Computational Intelligence Systems

Abstract Statistically significant pattern mining (SSPM) is to mine patterns with significance based on hypothesis test. Under the constraint of statistical significance, our study aims to introduce a new preference relation into high…

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Negative / Null Result Report

Funding source and primary outcome changes in clinical trials registered on ClinicalTrials.gov are associated with the reporting of a statistically significant primary outcome: a cross-sectional study

Sreeram V Ramagopalan, Andrew P. Skingsley, Lahiru Handunnetthi et al. · 2015 · F1000Research

Background : We and others have shown a significant proportion of interventional trials registered on ClinicalTrials.gov have their primary outcomes altered after the listed study start and completion dates. The objectives of this study…

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Negative / Null Result Report

Designing a set of criteria for evaluating artificial neural networks trained with physics-based data to replicate molecular dynamics and other particle method trajectories

Alessio Alexiadis · 2024 · Frontiers in Nanotechnology

This article presents an in-depth analysis and evaluation of artificial neural networks (ANNs) when applied to replicate trajectories in molecular dynamics (MD) simulations or other particle methods. This study focuses on several…

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Negative / Null Result Report

Editorial Commentary : Surgical Treatment of Shoulder Instability With Subcritical Glenoid Bone Loss Requires Innovation: Bankart May Risk Significant Recurrence and Latarjet May Risk Significant Complications

Sarah B. Shubert · 2021 · Arthroscopy

Abstract The patient with a history of shoulder dislocation and subcritical (10%‐15%) glenoid bone loss presents a complicated scenario. The “safest” procedure (arthroscopic Bankart repair) may result in a high rate of failure and risk of…

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