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 →DOI: 10.1016/j.dib.2025.112264 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 →DOI: 10.1037/abn0001097 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 →DOI: 10.1016/s2468-1253(23)00460-0 Negative / Null Result ReportOpen access
Lin W, Clarke AM, Pilz KS et al. · 2023 · Preprint
What does age in ageing? Results in reinforcement learning (RL) are mixed. Some studies found deteriorated performance in older participants compared to younger controls whereas other studies did not. Daniel et al. (2020) suggested that…
View details →DOI: 10.1101/2023.05.25.542104 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 →DOI: 10.1377/hlthaff.2023.01151 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 →DOI: 10.1513/annalsats.202208-676oc 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 →DOI: 10.1158/1055-9965.epi-25-0498 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 →DOI: 10.1097/cce.0000000000000405 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 →DOI: 10.1183/20734735.0363-2018 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 →DOI: 10.1186/s42466-025-00369-0 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…
View details →DOI: 10.1002/onco.13761 Negative / Null Result ReportMedicine
Galipienso-Eri M, Baraldés-Canals M, Aliaga-Martínez A et al. · 2025 · Indian journal of orthopaedics
Background/purpose Periprosthetic joint infection (PJI) accounts for up to 25% of failed total knee arthroplasties and 15% of the hips. The ICM18 established the criteria for the diagnosis, and the alpha-defensin lateral flow test (ADLT)…
View details →DOI: 10.1007/s43465-025-01409-2 Negative / Null Result ReportOpen accessMedicine
Saqib K, Goel V, Dubin JA et al. · 2026 · International journal of public health
Objective To examine differences in mental health-related healthcare utilization for anxiety and depression between individuals who did and did not undergo COVID-19 PCR testing in Ontario. Background: The COVID-19 pandemic has been…
View details →DOI: 10.3389/ijph.2026.1609134 Methods Dead-EndMedicine
Gogebakan KC, Kunst N, Ghodsi A et al. · 2026 · Journal of nuclear medicine : official publication, Society of Nuclear Medicine
The TheraP trial demonstrated that 177 Lu-PSMA-617 improved progression-free survival (PFS) compared with cabazitaxel, with no significant difference in overall survival (OS). However, 177 Lu-PSMA-617 was associated with fewer severe…
View details →DOI: 10.2967/jnumed.125.271825 Negative / Null Result ReportMedicine
Campo-Beamud C, Roig-Ferreruela G · 2026 · Archivos de la Sociedad Espanola de Oftalmologia
Blue light is a physiological component of visible light, essential for daytime vision and circadian synchronization. There is no evidence supporting the routine use of blue-blocking glasses for preventive or therapeutic purposes. The most…
View details →DOI: 10.1016/j.oftale.2026.502590 Negative / Null Result ReportMedicine
Marder SR, Eriksson H, Zhao Y et al. · 2020 · Acta neuropsychiatrica
Objective We provide a closer look at the result of a randomised, placebo-controlled, active-reference (quetiapine XR), flexible-dose, 6-week study of brexpiprazole in schizophrenia, which did not meet its primary endpoint - change from…
View details →DOI: 10.1017/neu.2020.8 Negative / Null Result ReportMedicine
Shah R, Das S, Gentile Kruse CF et al. · 2025 · Pediatric neurology
Background Triptans are used to treat migraine attacks, but little to no evidence supports their use for youth with post-traumatic headache (PTH). This study evaluated patterns of use and benefit of triptans in the treatment of acute…
View details →DOI: 10.1016/j.pediatrneurol.2025.03.013 Negative / Null Result Report
Eggeling-Böcker M, Karabetsos E, Christopoulou M et al. · 2025 · Preprint
Background: Technological advancements, such as the introduction of the fifth generation technology standard 5G, offer opportunities but also raise concerns. Although no evidence suggests negative effects of radiofrequency electromagnetic…
View details →DOI: 10.12688/openreseurope.19236.2 Replication FailureMedicine
Roth MT, Cardin DB, Borazanci EH et al. · 2020 · The oncologist
Lessons learned This trial evaluating a novel plant extract, PBI-05204, did not meet its primary endpoint of overall survival but did show signals of efficacy in heavily pretreated mPDA. PBI-05204 was generally well tolerated, with the…
View details →DOI: 10.1634/theoncologist.2020-0440 Replication FailureMedicine
Appleman LJ, Kim SE, Harris WB et al. · 2024 · Journal of clinical oncology : official journal of the American Society of Clinical Oncology
Purpose Patients with no evidence of disease (NED) after metastasectomy for renal cell carcinoma are at high risk of recurrence. Pazopanib is an inhibitor of vascular endothelial growth factor receptor and other kinases that improves…
View details →DOI: 10.1200/jco.23.01544 Negative / Null Result ReportMedicine
Park K, Özgüroğlu M, Vansteenkiste J et al. · 2021 · Lung cancer (Amsterdam, Netherlands)
Objectives The JAVELIN Lung 200 phase 3 trial did not meet its primary endpoint of improving overall survival (OS) with avelumab vs docetaxel in patients with platinum-treated PD-L1+ NSCLC. We report post hoc analyses assessing the effects…
View details →DOI: 10.1016/j.lungcan.2021.01.026 Negative / Null Result ReportMedicine
Ponce H, Cordero R, Tran J et al. · 2025 · Journal of patient experience
In a prior study, communication scholar ratings of clinician communication effectiveness did not correlate with perceived clinician empathy, which is one aspect of patient experience. We repeated the analysis with a different rating of…
View details →DOI: 10.1177/23743735251323674 Negative / Null Result ReportOpen accessMedicine
Neter E, Youngmann R, Gruper N · 2025 · JMIR formative research
Unlabelled Associations between eHealth literacy and mental health literacy were examined; no significant association was identified between overall eHealth and mental health literacy and only weak associations between specific skills were…
View details →DOI: 10.2196/76812 Negative / Null Result ReportOpen accessMedicine
Pienkos S, Swank Z, Hamlin RE et al. · 2025 · Open forum infectious diseases
Plasma samples obtained approximately 3 ( n = 100) and 12 months ( n = 78) after acute SARS-CoV-2 infection were tested for S1, spike, and N antigens. There were no significant differences in plasma proteins or single-cell protein…
View details →DOI: 10.1093/ofid/ofaf515 Negative / Null Result ReportOpen accessMedicine
Wesley CD, Strange JE, Holt A et al. · 2025 · European heart journal open
Aims Fluoroquinolones (FQ) have been associated with aortic aneurysm and aortic dissection (AA/AD) resulting in an official warning. Recently, large-scale epidemiological studies failed to confirm this. Methods and results The current…
View details →DOI: 10.1093/ehjopen/oeaf021 Negative / Null Result ReportOpen access
Physical activity has many health and psychological benefits, however many programs aimed at increasing physical activity have failed to show the expected results. This may be because when people increase their level of exercise, they…
Negative / Null Result ReportOpen access
Growth factors and cytokines have a great potential for regenerative medicine applications. Yet, most of these molecules have failed to show efficacy in humans or raised major safety concerns, due to high dosing and inappropriate delivery…
Negative / Null Result ReportOpen accessMedicine
Demattio L, Fietz D, Schuler G et al. · 2024 · Tierarztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
A 9.4 mg deslorelin slow-release implant was inserted into an adult, healthy billy goat to achieve temporary infertility and a reduction in sexual behavior. The implant was inserted in late autumn. No significant change in testis size was…
View details →DOI: 10.1055/a-2289-5640 Negative / Null Result ReportOpen accessMedicine
Wang D, Nanavati C, Yang DZ et al. · 2026 · Journal of clinical pharmacology
Impact of concomitant medications (conmeds) on the safety of the investigational agent is often evaluated using subgroup analyses for safety events in patients who received the conmed versus those who did not. Here, we highlight the…
View details →DOI: 10.1002/jcph.70201 Negative / Null Result ReportOpen access
Marinus H. van IJzendoorn, Marian J. Bakermans-Kranenburg · 2009
AbstractIn middle childhood, boys show more avoidant attachments and girls more ambivalent attachments as a prelude to gender differentiation in reproductive strategies. However, we have failed to find systematic and method-independent…
View details →DOI: 10.1017/s0140525x0900003x