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20,227 real negative results, null findings, and replication failures · 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

Impact of Pre-Elite Anterior Cruciate Ligament (ACL) Reconstruction on Draft Outcomes and Reinjury Risk in Elite Australian Football Players: A Retrospective Cohort Study.

Veale JP, Shawdon A, D'Alessandro P et al. · 2025 · Sports (Basel, Switzerland)

A history of anterior cruciate ligament reconstruction (ACLR) during the Australian Football (AF) talent pathway may impact draft prospects and increase the risk of a second injury during a professional career. This study investigated…

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Negative / Null Result ReportOpen accessMedicine

Magnesium supplementation did not reduce serum calciprotein crystallization and arterial stiffness in individuals with type 2 diabetes: a randomized, double-blind, placebo-controlled trial.

Meer R, Xu JY, Newsom SP et al. · 2026 · The American journal of clinical nutrition

Background Medial arterial calcification (MAC) and increased arterial stiffness contribute to cardiovascular disease risk in type 2 diabetes mellitus (T2DM). Experimental studies suggest that magnesium supplementation may halt arterial…

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Negative / Null Result ReportOpen accessMedicine

Effectiveness of a virtual hospital model of care for patients with low back pain presenting to emergency departments (Back@Home).

Sigera C, Oliveira CB, Melman A et al. · 2026 · NPJ digital medicine

This study evaluated the effectiveness of a virtual hospital model of care (Back@Home) for low back pain (LBP). We conducted an observational study across four hospitals in the Sydney Local Health District, Australia. We included patients…

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Negative / Null Result ReportMedicine

Does Reiki Therapy ReducePreoperative Anxiety and Postoperative Pain in Third Molar Surgery? A Randomized Controlled Trial.

Ozden Yuce M, Simsek B, Dadas OF et al. · 2026 · Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons

Background Preoperative anxiety in patients undergoing third molar extraction can influence pain perception. Limited evidence suggests Reiki therapy may help manage anxiety and pain, but its effectiveness in dentistry is unclear. Purpose…

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Negative / Null Result ReportOpen accessAnimal culture

Influence of supplemental canola or soybean oil on milk yield, fatty acid profile and postpartum weight changes in grazing dairy goats

Israel Lerma-Reyes, German D. Mendoza-Martínez, Rolado Rojo-Rubio et al. · 2018 · Asian-Australasian Journal of Animal Sciences

Objective This experiment was designed to evaluate the effect of supplementation with soybean or canola oil on milk production and the composition of long chain fatty acids as well as weight changes in the goats and their kids. Methods Thirty nine mulitparous crossed Alpine×Nubian goats (initial body weight [BW] 43.5±1.7 kg) from the day of parturition were assigned to the treatments: grazing control (n = 15); grazing plus 20 mL/goat/d of supplemental soybean oil (n = 12); and grazing plus 20 mL/goat/d of supplemental canola oil (n = 12) from November 26, 2014 to March 7, 2015. The planned con

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Negative / Null Result ReportOpen accessDiseases of the genitourinary system. Urology

Continuous venovenous hemodiafiltration versus standard medical therapy for the prevention of rhabdomyolysis-induced acute kidney injury: a retrospective cohort study

Yan Meng, Ming-xue Zhou, Chun-bo Wu et al. · 2023 · BMC Nephrology

Abstract Aim To determine whether continuous venovenous hemodiafiltration (CVVHDF) plus standard medical therapy (SMT) vs. SMT alone prevents rhabdomyolysis (RM)-induced acute kidney injury (AKI) and analyze the related health economics. Methods This retrospective cohort study involved 9 RM patients without AKI, coronary heart disease, or chronic kidney disease treated with CVVHDF plus SMT (CVVHDF + SMT group). Nine matched RM patients without AKI treated with SMT only served as controls (SMT group). Baseline characteristics, biochemical indexes, renal survival data, and health economic data w

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Negative / Null Result ReportOpen accessAnimal culture

Frações da parede celular e digestibilidade in vitro da matéria seca de três genótipos de girassol ensilados com aditivos In vitro dry matter and cell wall fractions of three genotypes of sunflower ensiled with additives

P.P. Porto, E.O.S. Saliba, L.C. Gonçalves et al. · 2006 · Arquivo Brasileiro de Medicina Veterinária e Zootecnia

Ensilaram-se três genótipos de girassol (M734, Rumbosol 91 e variedade V2000), enriquecidos no material original com: 0,5% de uréia (U); 0,5% de carbonato de cálcio (CC); 0,5% de uréia mais 0,5% de carbonato de cálcio (U+CC); inoculante bacteriano comercial (IB) comercial e sem aditivo que serviu como silagem testemunha (T). Foram utilizados silos de laboratório de PVC, abertos com 1, 3, 5, 7, 14, 28 e 56 dias de ensilados, sendo determinados fibra em detergente neutro (FDN), fibra em detergente ácido (FDA), lignina e digestibilidade in vitro da matéria seca (DIVMS). As silagens de Rumbosol 91

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Negative / Null Result ReportOpen accessPublic aspects of medicine

How peer conversations about HIV/AIDS media messages affect comprehension and beliefs of young South African women

E. Lubinga, A.A. Maes, C.J.M. Jansen · 2016 · SAHARA-J

Most existent research on the effects of interpersonal discussions about health campaign messages is based on surveys. In this study, we analysed actual conversations about an HIV/AIDS poster to find out possible effects. Young South African women in 59 dyads (n = 118) participated in conversations about a deliberately puzzling HIV and AIDS poster that cautioned the target group to be faithful to one sexual partner. We measured their comprehension of the poster and beliefs about the message, before and after the conversations. Overall, actual comprehension (AC) was low, and we observed a large

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Negative / Null Result ReportOpen accessDiseases of the circulatory (Cardiovascular) system

Biventricular versus Conduction System Pacing after Atrioventricular Node Ablation in Heart Failure Patients with Atrial Fibrillation

Maja Ivanovski, Miha Mrak, Anja Zupan Mežnar et al. · 2022 · Journal of Cardiovascular Development and Disease

Conduction system pacing (CSP) modalities, including His-bundle pacing (HBP) and left bundle branch pacing (LBBP), are increasingly used as alternatives to biventricular (BiV) pacing in heart failure (HF) patients scheduled for pace and ablate strategy. The aim of the study was to compare clinical outcomes of HF patients with refractory AF who received either BiV pacing or CSP in conjunction with atrio-ventricular node ablation (AVNA). Fifty consecutive patients (male 48%, age 70 years (IQR 9), left ventricular ejection fraction (LVEF) 39% (IQR 12)) were retrospectively analysed. Thirteen pati

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Negative / Null Result ReportOpen accessDiseases of the circulatory (Cardiovascular) system

Long term outcomes following embolisation of bronchial and non-bronchial systemic arteries for the management of haemoptysis – a 20-year experience

Shyamal Patel, Lucy Rose Howroyd, Helen Bucknall et al. · 2025 · CVIR Endovascular

Abstract Background Bronchial artery embolisation (BAE) is considered the most effective non-surgical technique for management of moderate-massive haemoptysis. Associated risks include neurological compromise such as stroke and spinal cord ischaemia. We aim to evaluate post-procedural outcomes and complication rates. Materials and methods A single-centre retrospective observational study was conducted for BAE cases performed between January 2002-June 2022 in a London teaching hospital. Data was collected from electronic medical records and Picture Archiving Communications System (PACS). Primar

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Negative / Null Result ReportOpen accessEnvironmental technology. Sanitary engineering

Systematic errors in northern Eurasian short-term weather forecasts induced by atmospheric boundary layer thickness

Igor Esau, Mikhail Tolstykh, Rostislav Fadeev et al. · 2018 · Environmental Research Letters

Systematic errors in forecast near-surface air temperature (SAT) still constitute a considerable problem for numerical weather prediction (NWP) at high latitudes. Numerous studies in the past have attempted to reduce this problem through recalibration of physical parameterization schemes and better approximation of the surface energy budget. The errors, however, remain despite notable improvements in the overall weather forecast performance. This study looks at the problem from a different perspective. It analyzes asymmetries in the SAT forecast errors. The study reveals a statistical pattern

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Negative / Null Result ReportMedicine

Comparative clinical and radiographic evaluation of autogenous dentin graft versus xenograft in periodontal intrabony defects - A nonrandomized controlled trial.

Anusuya, Balaji, Manikandan · 2026 · Journal of Indian Society of Periodontology

Periodontal regeneration aims to restore the natural structure of the periodontium, therefore improving the long-term stability and function of the affected teeth. Traditional bone graft materials such as allografts, autografts,…

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Negative / Null Result ReportMedicine

Does Local Excision Without Salvage Surgery Affect the Prognostic Outcome of Patients With Malignant Colorectal Polyp? A Long-Term Survival Analysis.

Ng, Chu, Chan et al. · 2026 · Journal of gastroenterology and hepatology

Management of malignant colorectal polyp has been a treatment dilemma for clinicians. This study aims to evaluate the long-term survival outcome of patients with and without salvage surgery after local excision. From January 2000 to…

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Negative / Null Result ReportOpen accessMicrobiology

Efficacy and safety of voriconazole and caspofungin for the treatment of invasive pulmonary aspergillosis in critically ill patients in China

Zhuo Li, Yuan Zong, Dayu Chen et al. · 2025 · Frontiers in Cellular and Infection Microbiology

ObjectiveTo compare and analyze the efficacy and safety of different antifungal drug treatment regimens for patients with invasive pulmonary aspergillosis (IPA) in the intensive care unit (ICU).MethodsWe retrospectively collected the clinical data of patients with IPA in the ICU in two grade-A tertiary hospitals from January 2019 to January 2024 using the HIS system and compared the clinical efficacy, incidence of adverse drug reactions (ADRs), and all-cause mortality at discharge among different antifungal treatments, such as voriconazole alone, caspofungin alone, and a combination of voricon

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Negative / Null Result ReportOpen accessDentistry

Influence of film thickness of one and two-step universal adhesives on dentin bond strength

Selin Yalnız, Hayal Boyacıoglu, Lezize Sebnem Turkun · 2026 · BMC Oral Health

Abstract Background To investigated the combined effect of adhesive type and film thickness on dentin bond strength by comparing one and two-step universal adhesives applied in single and double layers. Methods Forty caries-free human third molars were collected and standardized Class I cavities were prepared. Specimens were restored using one-step (Clearfil Tri-S Bond Universal, Japan) and two-step (G2-Bond Universal, Japan) universal adhesive systems. Each group was subdivided into single and double-layer applications, light-cured, and restored with a universal composite resin. Sticks with a

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Negative / Null Result ReportOpen accessSurgery

Modulation of Remote Ischemic Preconditioning by Proinflammatory Cytokines in Renal Transplant Recipients

Homero Zapata-Chavira, Marco Hernández-Guedea, Julio César Jiménez-Pérez et al. · 2019 · Journal of Investigative Surgery

Aim: Remote ischemic preconditioning (RIPC) has been used as a strategy to reduce acute renal injury and ischemia-reperfusion injury (IRI) in renal transplantation (RT) with controversial results. Objective: To determine if RIPC modifies IRI in cadaveric RT recipients through inflammatory mediators and graft function. Methods: Twenty-nine RT recipients were studied, 12 in the control group (CG) and 17 in the RIPC group. RIPC which was performed on donors using a pneumatic tourniquet placed on both thighs for 10 min followed by the determination of IL-1, IL-6, TNF-α, VEGF, and ICAM-1, and hemat

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Negative / Null Result ReportOpen accessMedicine

The selective NLRP3 inhibitor MCC950 hinders atherosclerosis development by attenuating inflammation and pyroptosis in macrophages

Wenyun Zeng, Danbin Wu, Yingxin Sun et al. · 2021 · Scientific Reports

Abstract NLRP3 inflammasome is a vital player in macrophages pyroptosis, which is a type of proinflammatory cell-death and takes part in the pathogenesis of atherosclerosis. In this study, we used apoE−/− mice and ox-LDL induced THP-1 derived macrophages to explore the mechanisms of MCC950, a selective NLRP3 inhibitor in treating atherosclerosis. For the in vivo study, MCC950 was intraperitoneal injected to 8-week-old apoE−/− mice fed with high-fat diet for 12 weeks. For the in vitro study, THP-1 derived macrophages were treated with ox-LDL and MCC950 for 48 h. MCC950 administration reduced pl

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Negative / Null Result ReportMedicine

Effect of the orexin receptor antagonist, suvorexant, on sleep architecture in the early postoperative period following cardiac surgery: a randomized controlled trial.

Wongtangman, Reddy Janga, Azimaraghi et al. · 2026 · Critical care (London, England)

Patients recovering from cardiac surgery in the intensive care unit (ICU) do not sleep well. Commonly used sedative-hypnotic medications can disrupt sleep architecture and increase the risk of delirium in critically ill patients after…

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Negative / Null Result ReportOpen accessMicrobiology

Is antipseudomonal antibiotic treatment needed for all nursing and healthcare-associated pneumonia patients at risk for antimicrobial resistance?

Akihiro Ito, Tadashi Ishida, Hiromasa Tachibana et al. · 2020 · Journal of Global Antimicrobial Resistance

Objectives: Nursing and healthcare-associated pneumonia (NHCAP) was proposed by the Japanese Respiratory Society to refer to healthcare-associated pneumonia. This study aimed to investigate whether antipseudomonal antibiotic therapy improved the prognosis of NHCAP patients at high risk for antimicrobial-resistant pathogens. Methods: Consecutive hospitalised NHCAP patients in Kurashiki Central Hospital between October 2010 and December 2016 were prospectively enrolled. NHCAP patients who were at high risk for antimicrobial resistance were defined as those who received antimicrobials in the prec

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Negative / Null Result ReportOpen accessOphthalmology

Can Tinted Lenses Be Used to Manipulate Pupil Size and Visual Performance When Wearing Multifocal Contact Lenses?

Park HM, Ryu YU, Park IJ et al. · 2020 · Clinical Optometry

Hyung Min Park, 1 Young Uk Ryu, 2 In Jee Park, 1 Byoung Sun Chu 1 1School of Optometry and Vision Science, Daegu Catholic University, Gyeongsan-si, Republic of Korea; 2Department of Physical Therapy, Daegu Catholic University, Gyeongsan-si, Republic of KoreaCorrespondence: Byoung Sun ChuSchool of Optometry and Vision Science, Daegu Catholic University, 13-13 Hayang-ro, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do 38430, Republic of KoreaTel +82-53-850-2553Fax +82-53-359-6793Email bschu@cu.ac.krBackground: The purpose of this study is to investigate the effect of wearing neutral density (ND) filt

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Negative / Null Result ReportOpen accessAnimal culture

SNP-based heritability estimation using a Bayesian approach

K. Krag, L.L. Janss, M.M. Shariati et al. · 2013 · Animal

Heritability is a central element in quantitative genetics. New molecular markers to assess genetic variance and heritability are continually under development. The availability of molecular single nucleotide polymorphism (SNP) markers can be applied for estimation of variance components and heritability on population, where relationship information is unknown. In this study, we evaluated the capabilities of two Bayesian genomic models to estimate heritability in simulated populations. The populations comprised different family structures of either no or a limited number of relatives, a single

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Negative / Null Result ReportOpen accessImmunologic diseases. Allergy

Women’s understanding of immunization card and its correlation with vaccination behaviors

Ryoko Sato, Benjamin Fintan · 2020 · Human Vaccines & Immunotherapeutics

Background: Despite the proven effectiveness of vaccinations, vaccination uptake is limited in Nigeria. According to the Multiple Indicator Cluster Survey (MICS), one of the main barriers is the lack of accurate knowledge of the vaccination schedule. This study evaluates caregivers’ knowledge of the vaccination schedule and their ability to read the immunization card. Methods: The study evaluated the knowledge of caregivers in 11 settlements in the Jada local government area of Adamawa State in September 2019. The change in knowledge among caregivers before and after referring to the immunizat

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Negative / Null Result ReportOpen accessBiotechnology

The elasticity of silicone-stabilized liposomes has no impact on their in vivo behavior

Alicja Hinz, Joanna Lewandowska-Łańcucka, Ewa Werner et al. · 2024 · Journal of Nanobiotechnology

Abstract Background The elastomechanical properties of nanocarriers have recently been discussed as important for the efficient delivery of various therapeutics. Some data indicate that optimal nanocarriers’ elasticity can modulate in vivo nanocarrier stability, interaction with phagocytes, and uptake by target cells. Here, we presented a study to extensively analyze the in vivo behavior of LIP-SS liposomes that were modified by forming the silicone network within the lipid bilayers to improve their elastomechanical properties. We verified liposome pharmacokinetic profiles and biodistribution,

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Negative / Null Result ReportOpen accessSpecial aspects of education

The effectiveness of e-learning in pediatric medical student education

Rima Khasawneh, Kari Simonsen, Jessica Snowden et al. · 2016 · Medical Education Online

Background: Electronic learning allows individualized education and may improve student performance. This study assessed the impact of e-modules about infection control and congenital infections on medical knowledge. Methods: A descriptive study was conducted involving third-year medical students on pediatric clerkship. e-Module content in three different formats was developed: a text monograph, a PowerPoint presentation, and a narrated PowerPoint lecture. Students’ use of the e-modules was tracked, as was participation in the infectious disease rotation and the order of pediatric rotation. Pr

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Negative / Null Result ReportOpen accessPsychology

Executive functions, listening comprehension, and metacognitive processes in childhood: developmental profiles

Ζωή Μπαμπλέκου, Ελισάβετ Χρυσοχόου, Σμαράγδα Καζή · 2023 · Ψυχολογία: το Περιοδικό της Ελληνικής Ψυχολογικής Εταιρείας

Despite the established interplay between executive functioning and metacognition, evidence remains limited regarding children’s metacognitive monitoring in the form of offline performance estimates of their executive efficiency. Moreover, we know little about the relations among listening comprehension, executive functions, and metalinguistic awareness in childhood. The present study constitutes a first exploration of developmental profiles related to executive functioning, listening comprehension, and corresponding metacognitive-metacomprehension monitoring in periods marking their emergence

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Negative / Null Result ReportOpen accessDiseases of the respiratory system

Breathlessness worsened by haemodialysis

Rizna Abdul Cader, Kanagerajan Thoriappa, Rozita Mohd et al. · 2019 · Respiratory Medicine Case Reports

A 54 year old lady with underlying chronic lung disease on long term oxygen therapy and end stage renal disease of unknown aetiology on regular haemodialysis for two years started developing progressive shortness of breath during her routine haemodialysis. She was unable to tolerate her haemodialysis sessions which had to be terminated prematurely in view of her symptoms despite adjustment of her dry weight and treatment of anaemia. She was not in chronic fluid overload and her symptoms always worsened after initiation of haemodialysis and improved after termination of haemodialysis. She was a

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