Negative / Null Result Report
Ismaile S, Alhosban F, Shajrawi A et al. · 2026 · Preprint
Abstract Background Preparing undergraduate nurses for high-acuity practice requires educational approaches that allow safe rehearsal of complex clinical situations, yet evidence from routine programme delivery remains mixed when immersive…
View details →DOI: 10.21203/rs.3.rs-9187827/v1 Negative / Null Result ReportMedicine
Yuan W, Liang X, Zhang R et al. · 2026 · Clinical therapeutics
Purpose This study aimed to evaluate the effects of remimazolam in conjunction with esketamine on anesthesia and the incidence of early perioperative neurocognitive disorders (PNDs) in patients undergoing thoracoscopic partial lung…
View details →DOI: 10.1016/j.clinthera.2026.02.015 Negative / Null Result Report
Hattori S, Shimizu K, Kotorii R et al. · 2026 · Preprint
Abstract Purpose. To evaluate the safety and feasibility of introducing retroperitoneal single-port robot-assisted radical prostatectomy (SP-RARP) by comparing a single surgeon’s initial 50 cases with 50 recent transperitoneal multiport…
View details →DOI: 10.21203/rs.3.rs-9990410/v1 Negative / Null Result ReportMedicine
Baker S, Nouraie SM, Steinman RA · 2026 · JCI insight
Programs at the medical school level to train students as physician-scientists include NIH-supported MD-PhD (Medical Scientist Training Program, MSTP), non-NIH-supported MD-PhD (MDPhD), and limited research pathways for MD-only students.…
View details →DOI: 10.1172/jci.insight.202606 Negative / Null Result ReportMedicine
Taghizadeh H, Parvizi MJ, Roostaei A et al. · 2026 · Research quarterly for exercise and sport
This study compared the effects of blocked practice, random practice (contextual interference), and differential learning on acquisition, retention, and performance under psychological pressure of a basketball jump shot in novice…
View details →DOI: 10.1080/02701367.2026.2686249 Negative / Null Result Report
van Rassel CR, Rummel M, MacInnis MJ · 2026 · Preprint
This study examined the utility of HRV detrended fluctuation analysis alpha-1 (DFAα1) to assess readiness-to-train and exercise durability under varying acute training loads. Nineteen trained cyclists completed two 20-minute time-trials…
View details →DOI: 10.64898/2026.05.27.26354281 Negative / Null Result Report
Huang W, Jiang L, Wang H et al. · 2026 · Preprint
Abstract Background With advances in minimally invasive surgery, endometrial cancer treatment has evolved from laparotomy to laparoscopic (LS) and robotic techniques. However, outcomes such as surgical trauma, recovery, and cost vary…
View details →DOI: 10.21203/rs.3.rs-9654946/v1 Negative / Null Result ReportMedicine
Cebeci T, Polat Akmansoy B · 2026 · The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association
ObjectiveTo compare osteomeatal complex (OMC) anatomical variations and nasal cavity airway volume between individuals with cleft lip and palate (CLP) and healthy controls using cone beam computed tomography (CBCT).DesignRetrospective,…
View details →DOI: 10.1177/10556656261458450 Negative / Null Result Report
Bednarek MM, Walędziak M, Zuzaniuk MJ et al. · 2026 · Preprint
Abstract Purpose To compare operative outcomes, postoperative complications, and weight-loss effectiveness between three-trocar and conventional five-trocar laparoscopic sleeve gastrectomy (LSG). Methods A retrospective cohort study of 100…
View details →DOI: 10.21203/rs.3.rs-8719891/v1 Negative / Null Result ReportMedicine
Çavdarcı H, Sarıca M, Erensoy K et al. · 2026 · Tropical animal health and production
This study investigated the effects of different flooring designs on the welfare and behavioral traits in fast-growing broilers. A total of 600 day-old Ross-308 chickens were randomly allocated to five treatment groups: fully littered…
View details →DOI: 10.1007/s11250-026-05149-9 Negative / Null Result ReportMedicine
Bruni M, Perina F, Figueiredo J et al. · 2026 · Aquatic toxicology (Amsterdam, Netherlands)
Metallic corrosion poses an economic problem worldwide and is often mitigated by adding corrosion inhibitors (CIs) to protective coatings. Conventional CIs, such as 2-mercaptobenzothiazole (MBT) and benzotriazole (BTA), exhibit toxicity to…
View details →DOI: 10.1016/j.aquatox.2026.107912 Negative / Null Result ReportMedicine
Swallow C, Imamoglu M, Imamoglu AG et al. · 2025 · Urogynecology (Philadelphia, Pa.)
Importance Sacrocolpopexy is essential in the surgical management of advanced pelvic organ prolapse, and selecting the appropriate route for concomitant hysterectomy is critical. Objectives The aim of this study was to evaluate the effect…
View details →DOI: 10.1097/spv.0000000000001659 Negative / Null Result ReportOpen accessMedicine
Quan TT, Nguyen HM, Nguyen HT et al. · 2026 · Cureus
Objective This study aims to describe ductus arteriosus (DA) morphology in patients with pulmonary atresia with ventricular septal defect (PA-VSD) and to assess exploratory paired differences between echocardiography and digital…
View details →DOI: 10.7759/cureus.108765 Negative / Null Result Report
Sorjonen K, Melin B, Melin M · 2026 · Preprint
Based on statistically significant effects in cross-lagged panel network (CLPN) models, Ning and Zou concluded bidirectional prospective influences between negative self-attention and depression. However, cross-lagged effects may be…
View details →DOI: 10.31234/osf.io/4pqj7_v1 Negative / Null Result ReportOpen accessMedicine
Seber T, Uylar Seber T, Çiçek F et al. · 2026 · Journal of pain research
Purpose Fibromyalgia (FM) is a chronic pain syndrome frequently associated with neuroendocrine dysfunction and has been hypothesized to share pathophysiological mechanisms with conditions such as empty sella (ES) and intracranial…
View details →DOI: 10.2147/jpr.s609244 Negative / Null Result ReportMedicine
Goc G, Sukur YE · 2026 · Journal of minimally invasive gynecology
Study objective To compare embryo euploidy rates and reproductive outcomes among women with ovarian endometriomas who underwent ethanol sclerotherapy (EST), laparoscopic cystectomy, or expectant management prior to in vitro fertilization…
View details →DOI: 10.1016/j.jmig.2026.06.010 Negative / Null Result ReportMedicine
Koga S, Noguchi S, Kondo T · 2026 · Pediatric surgery international
Purpose Appendiceal location may affect the diagnosis and surgical management of acute appendicitis. However, pediatric-specific data remain limited. This study evaluated appendiceal location in Japanese children with acute appendicitis…
View details →DOI: 10.1007/s00383-026-06498-0 Negative / Null Result Report
Akdag A, Aktas E, Kutlu A et al. · 2026 · Preprint
Abstract Purpose: Residual fragments after retrograde intrarenal surgery (RIRS) may compromise delayed stone-free (SF) status and increase the likelihood of secondary intervention. This study evaluated the association between postoperative…
View details →DOI: 10.21203/rs.3.rs-9849277/v1 Negative / Null Result Report
Sağlam A, Kurutaş EB, Yağmur I et al. · 2026 · Preprint
Abstract Psoriasis is a chronic immune-mediated inflammatory skin disease associated with systemic inflammation and metabolic disturbances. Adipokines have been suggested as key mediators linking metabolic dysregulation and inflammatory…
View details →DOI: 10.21203/rs.3.rs-9211473/v1 Negative / Null Result ReportMedicine
Kitamura K, Fujii M, Yamate S et al. · 2026 · International orthopaedics
Purpose The role of periacetabular osteotomy (PAO) in symptomatic borderline hip dysplasia (borderline HD) remains controversial because the lateral centre-edge angle may not reflect global dysplastic morphology. We examined whether…
View details →DOI: 10.1007/s00264-026-06923-y Negative / Null Result ReportMedicine
Carkit S, Karaagac M · 2026 · Annals of surgical oncology
Background Esophageal cancer is associated with substantial morbidity and mortality worldwide and is frequently diagnosed at advanced stages, leading patients and their relatives to seek health-related information beyond traditional…
View details →DOI: 10.1245/s10434-026-19996-1 Negative / Null Result ReportMedicine
Van der Cruyssen F, Willaert R, Palla B et al. · 2026 · International journal of oral and maxillofacial surgery
Trigeminal nerve injuries severely degrade quality of life, yet comparative effectiveness evidence for existing treatments is scarce. The authors prospectively followed 153 adults with iatrogenic lingual or inferior alveolar nerve injuries…
View details →DOI: 10.1016/j.ijom.2026.06.014 Negative / Null Result ReportMedicine
Dubowitz H, Belanger R, Magder L et al. · 2026 · Academic pediatrics
Hypothesis A Maintenance of Certification-4 activity (MOC) will help primary care practices implement the Safe Environment for Every Kid (SEEK) approach to prevent child maltreatment more effectively than simpler independent online…
View details →DOI: 10.1016/j.acap.2026.103366 Negative / Null Result ReportMedicine
Chow JW, Yablon SA, Stokic DS · 2026 · NeuroRehabilitation
BackgroundAlthough several studies have examined gait changes associated with continuous intrathecal baclofen (CITB) infusion for spasticity in ambulatory patients with acquired brain injury (ABI), none has included a control…
View details →DOI: 10.1177/10538135261459634 Negative / Null Result ReportOpen accessMedicine
Gyoten T, Akatsu T, Kuroda T et al. · 2026 · Journal of cardiothoracic surgery
Background This study aimed to evaluate clinical outcomes after surgical aortic valve replacement with third-generation Edwards (Edwards Lifesciences, Irvine, CA, USA) 19-mm-labeled aortic valve bioprostheses, including a rapid-deployment…
View details →DOI: 10.1186/s13019-026-04158-x Negative / Null Result ReportMedicine
Shen J, Yu X, Xu J et al. · 2026 · Microorganisms
Inflammatory bowel disease (IBD) is associated with microbial dysbiosis, yet subtype-specific alterations in the tongue-coating microbiome remain insufficiently characterized. In this cross-sectional study, tongue-coating samples from 158…
View details →DOI: 10.3390/microorganisms14061381 Negative / Null Result ReportMedicine
Tanrıverdi S, Yeşiltepe S · 2026 · BMC oral health
Background Antidepressants are widely prescribed group of medications frequently associated with xerostomia. Although alterations in salivary flow among antidepressant users have been extensively investigated, there is a paucity of data…
View details →DOI: 10.1186/s12903-026-08892-5 Negative / Null Result ReportMedicine
Sun Y, Lee J, Wen X et al. · 2026 · Research quarterly for exercise and sport
The basketball jump shot is a fundamental skill in competitive play, and defensive pressure has been shown to influence movement execution and post-landing control. This study investigated post-landing stability during basketball jump…
View details →DOI: 10.1080/02701367.2026.2665730 Replication FailureMedicine
Hartmann S, Wenk N, Mann E et al. · 2026 · Ultraschall in der Medizin (Stuttgart, Germany : 1980)
Purpose As part of the pretherapeutic diagnostic workup for vulvar cancer, the inguinal lymph node status should be assessed. The diagnostic value of structured inguinal sonography for predicting the histological lymph node status in…
View details →DOI: 10.1055/a-2830-7606 Replication FailureMedicine
Hoenle A, Rickert D, Steinhart H et al. · 2026 · The Journal of laryngology and otology
Objectives. To determine whether sex independently predicts survival in oropharyngeal squamous cell carcinoma and whether human papillomavirus status mediates apparent sex-related survival differences at the population level. Methods.…
View details →DOI: 10.1017/s002221512610512x 