Negative / Null Result Report
Koutsonida M, Markozannes G, Kanellopoulou A et al. · 2026 · Preprint
Background: Metabolic syndrome (MetS) has been associated with cognitive decline. Considering its increasing prevalence worldwide, the goal of this study was to evaluate the feasibility and efficacy of a short-term, self-administered…
View details →DOI: 10.64898/2026.06.22.26356249 Negative / Null Result ReportMedicine
Çakır E, Ciğerci Y, Yılmaz S · 2026 · Scientific reports
This study aimed to evaluate the effects of a music intervention on anxiety, pain, and vital signs in patients undergoing Endoscopic Retrograde Cholangiopancreatography (ERCP). This randomized controlled trial included 70 patients who…
View details →DOI: 10.1038/s41598-026-50809-3 Negative / Null Result ReportMedicine
Sullivan M, Perea LL, Bradburn E et al. · 2026 · Journal of orthopaedic trauma
Objectives To evaluate whether preoperative intravenous tranexamic acid (TXA) reduces postoperative blood transfusion rates in geriatric patients undergoing operative treatment for hip fracture. Methods Design Prospective, double-blinded,…
View details →DOI: 10.1097/bot.0000000000003172 Failed Experiment ReportMedicine
Chichareon P, Suwannanon R, Thungthienthong M et al. · 2026 · British journal of clinical pharmacology
Background Left ventricular hypertrophy (LVH) contributes to a substantial risk of adverse outcomes in patients with coronary artery disease (CAD). Inflammation is one of the mechanisms responsible for LVH progression. The study aimed to…
View details →DOI: 10.1002/bcp.70470 Negative / Null Result ReportMedicine
Yang, Mueller, D'Andrea et al. · 2026 · Academic psychiatry : the journal of the American Association of Directors of Psychiatric Residency Training and the Association for Academic Psychiatry
Resident physicians experience high rates of depression, anxiety, burnout, and loneliness, yet few evidence-based interventions have been evaluated in this population. This randomized controlled pilot trial examined the feasibility,…
View details →DOI: 10.1007/s40596-026-02384-y Negative / Null Result ReportOpen accessMedicine
ELghareeb A, Dawaba M, Eldeeb M et al. · 2026 · International braz j urol : official journal of the Brazilian Society of Urology
Introduction Concomitant bladder neck incision (BNI) with posterior urethral valve ablation (VA) was proposed to mitigate the long-term sequela of posterior urethral valve (PUV) and reduce the reoperation rates. This study aimed to…
View details →DOI: 10.1590/s1677-5538.ibju.2025.0539 Negative / Null Result ReportMedicine
Gou, He, Zhuo · 2026 · Frontiers in medicine
To investigate the effect and safety of astragalus injection at Neiguan (PC6) for chronic heart failure (CHF; HF) with qi-deficiency and blood-stasis syndrome, and its effect on the renin-angiotensin-aldosterone system (RAAS). A…
View details →DOI: 10.3389/fmed.2026.1836620 Negative / Null Result ReportMedicine
Struys T, Christiaens V, De Bruyckere T et al. · 2025 · Clinical implant dentistry and related research
Aim To assess the impact of the timing of soft tissue augmentation on soft tissue changes and esthetic outcome following single immediate implant placement (IIP) in the anterior maxilla. Materials and methods Patients with a failing tooth…
View details →DOI: 10.1111/cid.70013 Negative / Null Result ReportMedicine
Bieglecka, Kęszycka, Czerwińska et al. · 2026 · Nutrients
Patients with psoriasis, a non-contagious, chronic, systemic inflammatory skin disease, often suffer from carbohydrate metabolism disorders, which can exacerbate systemic inflammation. This randomized, double-blind, placebo-controlled…
View details →DOI: 10.3390/nu18121843 Negative / Null Result ReportOpen accessMedicine
Sköld C, Hailer NP, Mallmin H · 2026 · Acta orthopaedica
Background and purpose Denosumab may preserve periprosthetic bone mineral density (pBMD) around uncemented total hip arthroplasty (THA) components. This exploratory analysis of a previously published randomized controlled trial (RCT) aimed…
View details →DOI: 10.2340/17453674.2026.45695 Negative / Null Result ReportOpen accessMedicine
Dong X, Liu Y, Chu X et al. · 2024 · CNS neuroscience & therapeutics
Background The ideal blood pressure (BP) target in patients who undergo endovascular thrombectomy (EVT) with successful reperfusion is uncertain. Observational studies show that elevated BP during this period is associated with a higher…
View details →DOI: 10.1111/cns.14907 Negative / Null Result ReportMedicine
Kamrani A, Khera AK, Raghav P et al. · 2026 · The Angle orthodontist
Objectives To evaluate and compare the effects of leukocyte-platelet-rich fibrin (L-PRF), injectable platelet-rich fibrin (i-PRF; submucosal), and i-PRF (intraligamental) on the rate of maxillary canine retraction. Materials and methods A…
View details →DOI: 10.2319/080325-664.1 Negative / Null Result ReportOpen accessInformation technology
Pang, Yan, Molton, James Steven, Ooi, Wei Tsang et al. · 2020 · JMIR mHealth and uHealth
BackgroundAs people living with HIV infection require lifelong treatment, nonadherence to medication will reduce their chance of maintaining viral suppression and increase the risk of developing drug resistance and HIV transmission. ObjectiveThis study aimed to evaluate the efficacy of a mobile app, Mobile Interactive Supervised Therapy (MIST), for improving adherence to oral HIV medications among HIV-infected adults in Singapore. MethodsWe conducted a two-group pilot randomized controlled trial (RCT) with a process evaluation, in which 40 HIV-infected participants with once-daily medication r
View details →DOI: 10.2196/15702 Negative / Null Result ReportOpen accessMedicine
Lisa Baquet, Helge Hasselmann, Stefan Patra et al. · 2018 · PeerJ
Background Only few aerobic exercise intervention trials specifically targeting cognitive functioning have been performed in multiple sclerosis. Objective and Methods This randomized controlled trial with 34 patients in the intervention group (IG) (mean: 38.2 years (±9.6)) and 34 patients in the control group (CG) (mean: 39.6 years (±9.7)) aimed to determine the effects of aerobic exercise on cognition in relapsing-remitting multiple sclerosis (RRMS). The primary outcome was verbal learning assessed by the verbal learning and memory test (VLMT). Patients were randomized to an IG or a waitlist
View details →DOI: 10.7717/peerj.6037 Negative / Null Result ReportOpen accessMedicine
Alexandria Turner, Mieke L van Driel, Ben Mitchell et al. · 2025 · Family Practice
Abstract Background Inappropriate antibiotic prescription for self-limiting respiratory tract infections (RTIs) by general practitioner (GP) registrars (trainees) is less common than by established GPs but still exceeds evidence-based…
View details →DOI: 10.1093/fampra/cmaf005 Negative / Null Result ReportMedicine
Dhanani NH, Lyons NB, Lee KH et al. · 2025 · HCA healthcare journal of medicine
Background Biologic mesh is often used in complex hernia repair, but there has been limited clinical evidence to date to support this practice. The aim of this study was to compare clinical and patient-reported outcomes of biologic versus…
View details →DOI: 10.36518/2689-0216.1761 Negative / Null Result ReportMedicine
Chen, Si, Chen et al. · 2026 · Frontiers in medicine
This study aimed to evaluate the long-term effects of an automated eye position fixation training device (AEPFTD) on intraoperative cooperation, surgical efficiency, complications, and recurrence rates in patients undergoing pterygium…
View details →DOI: 10.3389/fmed.2026.1764636 Negative / Null Result Report
Kral TR, Davis K, Korponay C et al. · 2021 · Preprint
Studies purporting to show changes in brain structure following the popular, eight-week Mindfulness-Based Stress Reduction (MBSR) course are widely referenced despite major methodological limitations. Here, we present findings from a…
View details →DOI: 10.1101/2021.06.14.21258762 Negative / Null Result ReportOpen accessMedicine
Shen CY, Li CP, Yu JT et al. · 2026 · In vivo (Athens, Greece)
Background/aim Resveratrol, a polyphenolic compound found in grapes, berries, and peanuts, has been linked to antioxidant, anti-inflammatory, and vasoprotective effects. Yet, evidence from randomized controlled trials (RCTs) remains…
View details →DOI: 10.21873/invivo.14235 Failed Experiment ReportOpen accessMedicine
Sawada A, Yoneta K, Togashi E et al. · 2024 · Journal of physical therapy science
[Purpose] In gastric cancer patients, low muscle mass decreases overall survival and quality of life (QOL). Resistance exercise with leucine-enriched essential amino acid (LEAA) supplementation may prevent muscle mass loss. This study was…
View details →DOI: 10.1589/jpts.36.218 Replication FailureOpen accessMedicine
Karina da Silva, Cristino Carneiro Oliveira, Leandro Ferracini Cabral et al. · 2023 · PLoS ONE
Pulmonary expansion manoeuvres are therapeutic techniques used to prevent and reverse atelectasis; however, no randomized controlled trials have provided evidence supporting the use of this intervention among individuals on mechanical ventilation. Objective To evaluate the effects of chest compression-decompression and chest block manoeuvres compared to usual care among patients on mechanical ventilation. Methods The current study was a randomized clinical trial of adult subjects on mechanical ventilation for 12 to 48 hours. The control group received usual care (passive or active mobilization
View details →DOI: 10.1371/journal.pone.0295775 Negative / Null Result ReportOpen accessMedicine
Akbarzadeh G, Abedi P, Jahanfar S et al. · 2024 · Frontiers in medicine
Background Sexual dysfunction is prevalent among breastfeeding women. Objective This study was designed to evaluate the effect of Rose damascene extract on sexual function and anxiety of breastfeeding women. Materials and methods This was…
View details →DOI: 10.3389/fmed.2024.1466341 Negative / Null Result ReportOpen accessDiseases of the endocrine glands. Clinical endocrinology
Maiko Miyamoto, Aika Miya, Akinobu Nakamura et al. · 2026 · Journal of Diabetes Investigation
ABSTRACT Aims/Introduction We aimed to explore the short‐term effects of tofogliflozin on the insulin secretory capacity of people with type 2 diabetes. Materials and Methods We performed a multicenter, prospective, randomized, active‐controlled, open‐label, parallel‐group comparison study of people with type 2 diabetes aged 20–89 years, with hemoglobin A1c (HbA1c) 6.5%–9.0%, not previously treated with antihyperglycemic agents. The participants were randomly assigned to a group that received 20 mg tofogliflozin per day or a group that received 500 mg metformin per day for 4 weeks. Fasting blo
View details →DOI: 10.1111/jdi.70245 Negative / Null Result ReportOpen accessMedicine
Schaefer M, Liedtke C, Enge S · 2025 · Scientific reports
Recent reports challenge the view that placebos need to be given in deception. Numerous studies report remarkable effects when giving placebos honestly in an open way. However, the mechanisms of open-label placebos still remain to be…
View details →DOI: 10.1038/s41598-025-27622-5 Negative / Null Result ReportOpen accessSpecial aspects of education
Maryam Amiri, Zahra Khademian, Reza Nikandish · 2018 · BMC Medical Education
Abstract Background The complexity of patients’ condition and treatment processes in intensive care units (ICUs) predisposes patients to more hazardous events. Effective patient safety culture is related to lowering the rate of patients’ complications and fewer adverse events. The present study aimed to determine the effect of empowering nurses and supervisors through an educational program on patient safety culture in adult ICUs. Methods A randomized controlled trial was conducted during April–September 2015 in 6 adult ICUs at Namazi Hospital, Shiraz, Iran. A total of 60 nurses and 20 supervi
View details →DOI: 10.1186/s12909-018-1255-6 Negative / Null Result ReportMedicine
Sandby K, Magkos F, Chabanova E et al. · 2024 · Clinical nutrition (Edinburgh, Scotland)
Background & aims In recent years, epidemiological studies have reported links between the consumption of fermented dairy products, such as yogurt, and health; however, evidence from human intervention trials is scarce and inconsistent. We…
View details →DOI: 10.1016/j.clnu.2023.12.018 Negative / Null Result ReportMedicine
Jain S, Jha AK, Chawla D et al. · 2026 · Indian journal of pediatrics
OBJECTIVES: To determine the effect of prone positioning on the duration of respiratory support in neonates receiving non-invasive mode of ventilation. METHODS: This open label randomized controlled trial was conducted in the NICU of a…
View details →DOI: 10.1007/s12098-026-06049-4 Negative / Null Result ReportMedicine
Kalli AJ, Mäkelä P, Huhtala H et al. · 2026 · Acta anaesthesiologica Scandinavica
Background Sternotomy causes substantial postoperative pain. Recently, several less invasive nerve blocks have been described that are safer to use even on anticoagulated patients. This study aims to evaluate early pain management using…
View details →DOI: 10.1111/aas.70253 Negative / Null Result ReportOpen accessMedicine (General)
Weishen WANG, Wenhui LOU, Zhiwei XU et al. · 2023 · Journal of Advanced Research
Introduction: The value of extended lymphadenectomy in pancreatoduodenectomy (PD) has been discussed by five randomized controlled studies. However, the limitations in the studies made their conclusions not sufficiently reliable. Objectives: This multi-center randomized controlled study was designed to clarify the efficacy of extended lymphadenectomy in PD for pancreatic ductal adenocarcinoma (PDAC). Methods: From December 2016 to October 2018, 170 consecutive patients undergoing PD were enrolled and randomized to standard or extended lymphadenectomy for the treatment of PDAC from three high-v
View details →DOI: 10.1016/j.jare.2022.09.011 Negative / Null Result ReportMedicine
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…
View details →DOI: 10.1186/s13054-026-06151-1 