Failed Experiment ReportMedicine
Turner D, DeMaet MA, Bundage D et al. · 2026 · American journal of infection control
During an 87-week interrupted time series, we evaluated screening positivity after de-escalating dedicated cohort units for Candida auris and later implementing enhanced nursing engagement. Discontinuing cohort units did not increase…
View details →Negative / Null Result ReportMedicine
Balziano S, Margalit I, Kollender R et al. · 2026 · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA
Fever often delays urgent hip fracture surgery due to infection concerns. This study found that operating early, despite fever, did not increase complications or death compared to waiting. Thus, early surgery appears to be a feasible…
View details →Negative / Null Result ReportMedicine
Diz-Lopes M, Rovetta CF, Pollastri F et al. · 2026 · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA
We evaluated how romosozumab affects bone structure, density, and strength at the wrist over 12 months. Volumetric bone mineral density did not increase, but high-resolution quantitative computed tomography imaging showed modest…
View details →Negative / Null Result ReportOpen accessMedicine
Parisi T, Santibanez Ocampo B, Adelman J et al. · 2026 · JCI insight
Age-related blood cell mutations (clonal hematopoiesis) reshape immune cells and lung tumor immune structures, but did not increase lung cancer growth in a genetically engineered mouse model. .
View details →Negative / Null Result ReportMedicine
Yata N, Hollό G, Ishida T et al. · 2026 · Journal of glaucoma
Précis Combined phacoemulsification and Kahook Dual Blade goniotomy significantly increased the iridocorneal angle dimensions in POAG/NTG, but postoperative pilocarpine instillation did not further increase the dimensions, suggesting that…
View details →Negative / Null Result ReportOpen accessMedicine
Li Z, Hu X, Feng H et al. · 2026 · Animals : an open access journal from MDPI
We evaluated the effects of different levels of DON (LD 441 and HD 1223 μg DON/kg in diet) on the growth performance, immunity, reproductive hormones, and intestinal health of immature gilts. No significant differences were observed in…
View details →Negative / Null Result ReportMedicine
Fisher JP, Roche J, Duffy AG et al. · 2026 · Autonomic neuroscience : basic & clinical
We investigated whether three days of hypoxic exposure in a hypobaric chamber, and the associated nocturnal periodic breathing (nPB), reduce sympathetic nerve activity (MSNA) transduction to blood pressure (BP). While hypoxia did not…
View details →Negative / Null Result ReportMedicine
Liu CX, Blair BA, Tenney ER · 2026 · Psychological science
In 2012, Livingston et al. found that Black women were buffered against gender backlash; whether Black women were dominant or supportive toward an employee did not affect people's perceptions of them as leaders in an organization.…
View details →Negative / Null Result ReportOpen accessMedicine
Wang L, Sardella BR, Aronson EK et al. · 2026 · NPJ breast cancer
We utilized the K14-Cre Brca1 f/f Tp53 f/f mouse model to investigate whether a pulse of PARP inhibitor (PARPi) ± an AKT inhibitor (AKTi) can prevent Brca1-related breast cancer. PARPi alone did not intercept or prevent tumor development.…
View details →Failed Experiment ReportMedicine
Kanazawa R, Goto R, Harada T et al. · 2024 · Scandinavian journal of immunology
Graft-infiltrating lymphocytes (GILs) play an important role in promoting rejection after organ transplantation. We recently reported that GILs that accumulated up to 3 days post-transplantation did not promote rejection, whereas GILs…
View details →Negative / Null Result ReportMedicine
Yang EH, Lopez C, Shay SL et al. · 2026 · Infection control and hospital epidemiology
The clinical outcomes associated with using commercial versus open ISDTs (initial specimen diverting techniques) remain unclear. This multicenter study showed that switching from the commercial to open ISDT did not change blood culture…
View details →Negative / Null Result ReportMedicine
Thomas A, Tucker CB, Lunn DE et al. · 2026 · Journal of biomechanics
Studies investigating the concurrent validity of markerless motion capture (MMC) systems for obtaining joint and segment kinematics have largely failed to consider the impact of ambient lighting and camera position, which can both affect…
View details →Negative / Null Result ReportMedicine
Tazumi T, Prados J, Urcelay GP · 2026 · Journal of comparative psychology (Washington, D.C. : 1983)
This study examined whether saline acts as an aversive stimulus for planarians and how it influences learning and memory. Using saline as an unconditioned stimulus, we first tested conditioned place avoidance. Saline did not support…
View details →Negative / Null Result ReportOpen accessMedicine
Lee N, Yang Y, Tian D et al. · 2026 · Journal of ginseng research
We determined whether Korean Red Ginseng (KRG) extract and ginsenosides (Rb1, Rg1, or Rg3) have estrogen receptor-mediated or androgen receptor-mediated activities using OECD TG455/458 assays with S9 metabolic activation. They did not…
View details →Negative / Null Result ReportMedicine
Adams MS, Mensink RP, Plat J et al. · 2026 · European journal of clinical nutrition
Background Previous almond intervention studies involving relatively healthy populations did not demonstrate improvements in cognitive performance. However, a long-term study with participants at risk of cognitive decline, such as those…
View details →Negative / Null Result ReportMedicine
Kant N, Garssen SH, Vernooij CA et al. · 2024 · Studies in health technology and informatics
Adding continuous monitoring to usual care at an acute admission ward did not have an effect on the proportion of patients safely discharged. Implementation challenges of continuous monitoring may have contributed to the lack of effect…
View details →Negative / Null Result ReportMedicine
Sanders JF, de Boer SE, Jonker J et al. · 2026 · Journal of the American Society of Nephrology : JASN
Key points Low-dose tacrolimus, everolimus, and prednisolone did not result in a higher rate of successful transplantation in older kidney transplant recipients. Low-dose tacrolimus, everolimus, and prednisolone did not result in better…
View details →Negative / Null Result ReportMedicine
Hüther A, Sherman CL, Sumaroka A et al. · 2026 · Ophthalmic genetics
Purpose To describe the phenotype of a patient with bi-allelic pathogenic variants in NR2E3 that did not result in an overt enhanced S-cone syndrome (ESCS) phenotype. Methods The patient underwent a comprehensive ophthalmic exam, imaging…
View details →Negative / Null Result ReportMedicine
Wu C, Zhu X, Dai Q et al. · 2026 · Chest
Case presentation A 74-year-old woman sought treatment with a 4-day history of high fever and rapidly progressive dyspnea. A 2-day course of ceftriaxone and betamethasone administered in an outpatient setting did not result in any clinical…
View details →Negative / Null Result ReportMedicine
Stewart D, Greenberg M, Heppell S et al. · 2025 · Emergency medicine Australasia : EMA
Objective To determine the proportion of patients who are admitted to hospital following a 'did not wait' (DNW) encounter that are related to the initial episode of care, and to assess the frequency of clinical deterioration in this…
View details →Null DatasetOpen accessMedicine
Roveri V, Souza UP, da Costa JHA et al. · 2025 · Data in brief
Null results are rarely reported yet are essential to establish realistic baselines for marine-seafood contamination. This dataset documents the first attempt to detect 17 widely used pharmaceuticals in edible tissues (muscle and liver) of…
View details →Negative / Null Result ReportMedicine
Dora J, Kuczynski AM, McCabe CJ et al. · 2026 · Journal of psychopathology and clinical science
Etiological models of alcohol and cannabis use disorders hypothesize that people are more likely to use substances when experiencing heightened negative affect, yet recent Ecological Momentary Assessment (EMA) studies found no evidence for…
View details →Failed Experiment ReportMedicine
Lindsay JO, Hind D, Swaby L et al. · 2024 · The lancet. Gastroenterology & hepatology
Background A previous controlled trial of autologous haematopoietic stem-cell transplantation (HSCT) in patients with refractory Crohn's disease did not meet its primary endpoint and reported high toxicity. We aimed to assess the safety…
View details →Negative / Null Result ReportMedicine
Finkelstein A, Cantor JC, Gubb J et al. · 2024 · Health affairs (Project Hope)
When a randomized evaluation finds null results, it is important to understand why. We investigated two very different explanations for the finding from a randomized evaluation that the Camden Coalition's influential care management…
View details →Negative / Null Result ReportMedicine
Eulenburg C, Celik Y, Redline S et al. · 2023 · Annals of the American Thoracic Society
Rationale: Recent randomized controlled trials did not show cardiovascular benefits of continuous positive airway pressure (CPAP) in adults with coronary artery disease (CAD) and obstructive sleep apnea (OSA) in intention-to-treat…
View details →Negative / Null Result ReportMedicine
Ryser MD, Holloway ST, Morsomme R et al. · 2025 · Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology
Background The UK Collaborative Trial of Ovarian Cancer Screening did not detect a reduction in ovarian cancer mortality with either multimodal screening (MMS) or transvaginal ultrasound screening (USS) compared with no screening. The…
View details →Negative / Null Result ReportOpen accessMedicine
Macielak SA, Vollmer NJ, Haddad NA et al. · 2021 · Critical care explorations
In practice, midodrine has been used to reduce IV vasopressor requirements and decrease ICU length of stay. However, recent publications have failed to show clinical success when midodrine was administered every 8 hours. One possible…
View details →Negative / Null Result ReportOpen accessMedicine
Sameed M, Meng Z, Marciniak ET · 2019 · Breathe (Sheffield, England)
In the EOLIA trial, early use of ECMO did not significantly improve mortality at 60 days in patients with severe ARDS, but when used as a rescue modality ECMO might help improve survival http://bit.ly/2XOjwSE.
View details →Negative / Null Result ReportOpen accessMedicine
Bath PM, Howard G, Hacke W · 2025 · Neurological research and practice
Background The majority of randomised controlled trials in acute stroke and many for prevention are neutral, i.e. they failed to reach statistical significance. However, many of these will find apparent benefit in a component of a…
View details →Replication FailureMedicine
Novik AV, Protsenko SA, Baldueva IA et al. · 2021 · The oncologist
Lessons learned Melatonin did not increase the efficacy of systemic chemotherapy in melanoma. Metformin did not increase the efficacy of systemic chemotherapy in melanoma. Background Current data support the possibility of antitumor…
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