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Browse the failure-mode index

11,312 real negative results, null findings, and replication failures in Medicine · Negative / Null Result Report. 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

Comment on "A randomized double-blind trial of intranasal dexmedetomidine versus intranasal esketamine for procedural sedation and analgesia in young children".

Wang J · 2025 · Scandinavian journal of trauma, resuscitation and emergency medicine

This comment critiques a trial comparing intranasal dexmedetomidine (DEX) and esketamine (sKET) for pediatric procedural sedation. Despite a large effect size, the small sample (n = 29) likely caused false-negative results (p = 0.09),…

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Negative / Null Result ReportMedicine

How prior racing performance influences competition level in off-the-track Thoroughbred horses' post-racing eventing careers.

Bacon EK, Parnell D, Muscatello G et al. · 2025 · Journal of equine veterinary science

Background The ongoing discussion surrounding the well-being of retired racehorses underscores the importance of implementing effective rehoming strategies that prioritise animal welfare. A significant knowledge gap persists regarding…

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Negative / Null Result ReportMedicine

Placental morphofunctional adaptations and offspring outcomes after protein restriction before and during pregnancy in mice.

Felicioni F, Nivia-Riveros JA, Caldeira-Brant AL et al. · 2026 · The Journal of nutritional biochemistry

Proper fetal development depends on maternal nutrition. We investigated the placental morphofunctional adaptations to a low-protein diet, and their impact on fetal and newborn outcomes. Swiss mice were fed either normal (NPD, 20% crude…

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Negative / Null Result ReportMedicine

Conventional Cytogenetic Analysis of Constitutional Abnormalities: A 20-Year Review of Proficiency Test Results From the College of American Pathologists/American College of Medical Genetics and Genomics Cytogenetics Committee.

Boles B, Gardner JA, Rehder CW et al. · 2025 · Archives of pathology & laboratory medicine

Context.— The joint College of American Pathologists/American College of Medical Genetics and Genomics Cytogenetics Committee works to ensure competency and proficiency of clinical cytogenetics testing laboratories through proficiency…

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Negative / Null Result ReportOpen accessMedicine

Comparing a Conceptual Framework and Factor Analysis to Achieve Survey Item Reduction in Predicting Medication Non-Persistence.

Umeaghadi CF, Taylor JG, Yao S et al. · 2026 · Patient preference and adherence

Adherence surveys can be lengthy due to the high number of potential risk factors to be analyzed. As a result, researchers often reduce items into conceptual domains (eg, beliefs, economic factors) to overcome power constraints or focus…

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Negative / Null Result ReportMedicine

Acceptability of Adolescent Portal Access Policies to Parents and Adolescents: A Delphi Study.

Sisk BA, Antes AL, Bereitschaft C et al. · 2025 · The Journal of adolescent health : official publication of the Society for Adolescent Medicine

Purpose United States healthcare systems have enacted varied adolescent online patient portal policies. No prior work has established whether these policies are acceptable to adolescents and parents. Methods Mixed-method Delphi approach…

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Negative / Null Result ReportOpen accessMedicine

Safety Audit of a Large Language Model for Lay Self-Triage Using Japanese Symptom Vignettes: Persistent Red-Flag Under-Triage Despite Improved Reproducibility Under Near-Deterministic Decoding.

Harada Y · 2026 · Cureus

Introduction Large language models are increasingly discussed as tools for patient-facing symptom assessment, but safe self-triage depends on the concrete next action recommended to the user rather than on generic urgency language alone.…

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Negative / Null Result ReportMedicine

The State of Surgery in Botswana, 2018 to 2022.

Romeo DJ, Wagner CS, Ahluwalia V et al. · 2025 · The Journal of craniofacial surgery

Many people living in low-income and middle-income countries (LMICs) lack access to safe surgical and anesthetic care. The Lancet Commission on Global Surgery (LCGS) recommended that all countries track surgical volume and target 5,000…

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Negative / Null Result ReportMedicine

Factors associated with failure to achieve Scoliosis Research Society-22r minimal clinically important difference despite achieving optimal global alignment in adult spinal deformity surgery.

Park SJ, Park JS, Kang DH et al. · 2026 · European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society

Purpose To identify factors associated with failure to achieve the minimal clinically important difference (MCID) in the Scoliosis Research Society-22r (SRS-22r) despite achieving optimal global alignment in adult spinal deformity (ASD)…

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Negative / Null Result ReportOpen accessMedicine

Comparison of cefazolin administered as a continuous or intermittent infusion for prophylaxis of surgical site infections in adult patients undergoing cardiac or neurologic surgery.

Drew RH, Turner NA, Keil E et al. · 2026 · Infection control and hospital epidemiology

In a propensity-matched cohort of adult cardiac or neurosurgical procedures ( n = 1,342), infection was less frequent with continuous infusion (1.8%) versus intermittent cefazolin (2.4%), though the difference was statistically…

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Negative / Null Result ReportMedicine

Prognostic impact of uric acid levels in heart failure with mildly reduced ejection fraction: Insights from a large retrospective registry.

Schmitt A, Behnes M, Bertsch T et al. · 2025 · European journal of internal medicine

Background Elevated uric acid (UA) is a recognized biomarker in patients with cardiovascular disease. However, the prognostic significance of UA levels in patients with heart failure (HF), particularly those with HF with mildly reduced…

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Negative / Null Result ReportMedicine

Vaccine hesitancy among nurses in the Marche Region.

Fortunato C, Gasperini B, Mengarelli Rinaldini D et al. · 2025 · Annali di igiene : medicina preventiva e di comunita

Background Vaccine hesitancy is considered one of the top ten threats to global health by the World Health Organization due to the potential public health consequences. Since April 1, 2021, the Italian Government has made COVID-19…

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Negative / Null Result ReportOpen accessMedicine

A randomised, double-blind, placebo-controlled trial to assess the postprandial dose-dependent effects of wild blueberries on metabolic and cognitive outcomes following a high-carbohydrate breakfast.

Ellis LR, O'Connor D, Khan H et al. · 2026 · European journal of nutrition

Purpose Despite equivocal human study data, anthocyanin-rich blueberries are associated with positive glycaemic effects which could benefit satiety and other cardiometabolic outcomes. The objective of this study was to examine the…

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Negative / Null Result ReportMedicine

Discovery of HCV vaccine: Where do we stand?

Balakrishnan P, Saravanan S, Vignesh R et al. · 2025 · Indian journal of medical microbiology

Background Hepatitis C virus (HCV) is still a serious public health issue because it can cause cirrhosis, hepatocellular carcinoma (HCC), and chronic hepatitis. In almost 70 % of cases, HCV infection results in chronic persistence, which…

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Negative / Null Result ReportOpen accessMedicine

Application of Autologous Platelet-Rich Plasma-Supplemented Medium Promotes <i>In Vitro</i> Maturation of Human Germinal Vesicle Oocytes.

Rezaie MJ, Allahveisie A, Nikkhoo B et al. · 2025 · International journal of fertility & sterility

Background Oocyte in vitro maturation (IVM) is a valuable technology applied to acquire fully developed oocytes for several clinical purposes. Despite substantial research on optimizing culture media, the success rate of IVM remains low.…

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Negative / Null Result ReportOpen accessMedicine

Register-based observational study of associations between inflammatory remission, formal treatment targets and the use of disease-modifying antirheumatic drugs among patients with early rheumatoid arthritis.

Lindqvist J, Askling J, Lampa J · 2023 · RMD open

Objective To assess associations between inflammatory remission, formal treatment targets and the likelihood of starting a new disease-modifying antirheumatic drug (DMARD), among patients with early rheumatoid arthritis (RA). Methods…

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Negative / Null Result ReportMedicine

Operative Management of Perianal Crohn's Disease.

Wilkinson T, Booth K · 2025 · The Surgical clinics of North America

The management of perianal Crohn's disease is challenging and complex and requires a multidisciplinary approach as a favorable working relationship between gastroenterologists and colorectal surgeons is necessary to provide excellent care…

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Negative / Null Result ReportOpen accessMedicine

Evaluating oral ketamine's adverse side effects in chronic pain patients.

Hom B, McIntee D, Zhang YP et al. · 2025 · Saudi journal of anaesthesia

Background Ketamine has been shown to be an effective treatment at sub-anesthetic doses for various chronic pain conditions. This study assesses the relationship between oral ketamine and the incidence of adverse side effects in patients…

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Negative / Null Result ReportMedicine

Standardization of Lesion Classification and Assessment by Investigators in Clinical Trials for Hidradenitis Suppurativa: A Consensus Exercise Using a Modified Delphi Approach.

Garg A, Strunk A, Midgette B et al. · 2026 · JAMA dermatology

Importance Accurate classification and reliability in assessment for lesions of hidradenitis suppurativa (HS) by investigators is critical to the determination of responder status and to overall data quality in clinical trials. Objective…

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