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Failure-mode index

Search what already failed

A searchable index of real negative results, null findings, and replication failures from the published literature — so you can learn what didn't work before repeating it.

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record (title, authors, DOI) compiled from open scholarly databases, with the abstract shown in full only where the paper is openly licensed (e.g. Creative Commons); otherwise a short excerpt is shown for reference under fair use. WASTE classifies each work by failure type; classifications are automated and approximate.

19821 results in Negative / Null Result Report · page 197 of 661

Negative / Null Result ReportMedicine

Seroprevalence and risk factors of toxoplasma gondii infection in goats from underreported Midland and lowland regions of Algeria.

Benattia, Saidi, Gouzi et al. · 2026 · Veterinary parasitology, regional studies and reports

Toxoplasmosis is a parasitic disease affecting both humans and animals and is caused by the protozoan parasite Toxoplasma gondii. In livestock, the infection leads to significant economic losses, mainly due to reproductive disorders such…

View details →DOI: 10.1016/j.vprsr.2026.101508
Negative / Null Result ReportMedicine

Plaque phenotypes across remodeling patterns in vertebrobasilar atherosclerosis: a high-resolution magnetic resonance vessel wall imaging study.

Liu, Xu, Zhong et al. · 2026 · Quantitative imaging in medicine and surgery

Intracranial atherosclerosis is the predominant etiology of ischemic stroke in East Asian populations. Atherosclerotic progression frequently involves concomitant vascular remodeling, and stroke risk profiles may vary across distinct…

View details →DOI: 10.21037/qims-2025-1812
Negative / Null Result ReportMedicine

Predictors of postoperative morbidity and delayed initiation of adjuvant chemotherapy after cytoreductive surgery in advanced-stage epithelial ovarian cancer.

Çaltek, Yassa, Şahin et al. · 2026 · World journal of surgical oncology

This study aimed to identify the factors predicting postoperative morbidity after cytoreductive surgery in patients with advanced-stage epithelial ovarian cancer, to evaluate the effect of this morbidity on the time to initiation of…

View details →DOI: 10.1186/s12957-026-04444-x
Negative / Null Result ReportMedicine

A randomized controlled trial comparing limbal-conjunctival autograft with conjunctival autograft in recurrent pterygium surgery with intraoperative application of 0.02% mitomycin C.

Peng, Wang, Gong et al. · 2026 · International ophthalmology

To compare the outcomes of conjunctival graft (CAG) versus limbal-conjunctival autograft (LCAG) in preventing recurrence after surgery for recurrent pterygium with intraoperative application of 0.02% mitomycin C(MMC). This prospective…

View details →DOI: 10.1007/s10792-026-04121-8
Negative / Null Result ReportMedicine

Assessment of infant and child feeding index and nutritional status among children aged 6-36 months in Kabul, Afghanistan.

Haq, Hou, Razaee et al. · 2026 · Journal of family medicine and primary care

The Infant and Child Feeding Index (ICFI) is a comprehensive, age-specific measure that evaluates the overall feeding practices of infants and young children. This study aimed to evaluate the feeding practices of children in Kabul,…

View details →DOI: 10.4103/jfmpc.jfmpc_1074_25
Negative / Null Result ReportMedicine

Population Genetic Structure and Biogeographic Distribution of Tropical Halodule uninervis in the Bohol Sea and Adjacent Waters in the Philippines.

Singson, Takayama, Suyama et al. · 2026 · Ecology and evolution

Halodule uninervis plays a critical role in the seagrass ecosystem because its opportunistic traits facilitate expansion and persistence under changing environmental conditions. Yet the population genetic structure and connectivity of this…

View details →DOI: 10.1002/ece3.73727
Negative / Null Result ReportMedicine

Sex-specific distribution of the uric acid-to-HDL cholesterol ratio and its association with arterial stiffness in a Japanese health check-up population: a cross-sectional analysis.

Qu, Jiang · 2026 · Frontiers in endocrinology

The uric acid to HDL-cholesterol ratio (UHR) is a composite marker of metabolic and inflammatory imbalance. Although a previous study in a Japanese health check-up population reported a positive and nonlinear association between UHR and…

View details →DOI: 10.3389/fendo.2026.1847114
Negative / Null Result ReportMedicine

A study on the environmental characteristics and social support for physical activity among adolescents: implications for public health nursing.

Guo, Zhou, Guo et al. · 2026 · Frontiers in public health

To investigate the distribution patterns of physical activity levels, perceptions of physical activity and the social support environment among secondary school students; to examine the associations between students' physical activity…

View details →DOI: 10.3389/fpubh.2026.1835941
Negative / Null Result ReportMedicine

Cross-Sectional and Longitudinal Associations between Dietary Variety Score and Hippocampal and Grey Matter Volume Changes among Community-Dwelling Older Japanese Adults: Findings from the NEIGE Cohort.

Ohaku, Murayama, Machida et al. · 2026 · Journal of epidemiology

Dietary diversity is associated with enhanced cognitive function and reduced dementia risk among older adults; however, its relationship with structural brain ageing remains unclear. We examined cross-sectional and longitudinal…

View details →DOI: 10.2188/jea.je20250722
Negative / Null Result ReportMedicine

Co-detection of human papillomavirus and human herpesvirus in women from Yunnan, China: associations with cervical lesion severity.

Wei, Huang, Huang et al. · 2026 · BMC infectious diseases

Human papillomavirus (HPV) is necessary but not sufficient for cervical carcinogenesis. Human herpesviruses (HHVs) may act as cofactors, yet evidence is inconsistent. We assessed HPV genotypes, HHVs, and their co-detection patterns across…

View details →DOI: 10.1186/s12879-026-13751-3
Negative / Null Result ReportMedicine

Frailty dimensions and cognitive function in relation to dual-task cost: A multidomain analysis in community-dwelling older adults.

Heyzer, Low, Tan et al. · 2026 · The Journal of frailty & aging

Dual-task cost (DTC) is the performance decline observed during simultaneous motor and cognitive tasks. It is associated with cognitive and physiological vulnerability. However, it remains unclear how specific frailty dimensions and…

View details →DOI: 10.1016/j.tjfa.2026.100166
Negative / Null Result ReportMedicine

Patient Trust in Healthcare Providers among People on Methadone Maintenance Treatment Using Methamphetamine in Vietnam.

Vu, Nguyen, Nguyen et al. · 2026 · Substance use & misuse

Patient trust in healthcare providers (PTP) is critical for improving treatment adherence and outcomes in substance use disorders. As concurrent opioid and methamphetamine use increasingly complicates methadone maintenance treatment (MMT),…

View details →DOI: 10.1080/10826084.2026.2676993
Negative / Null Result ReportMedicine

Association of Race and Ethnicity With Computed Tomography Head Utilization in Children Presenting to the Emergency Department With an Unprovoked Seizure.

Kannikeswaran, Sivaswamy, Przyklenk et al. · 2026 · Pediatric neurology

Although not routinely recommended, computed tomography (CT) head are frequently performed in children presenting to emergency department (ED) with seizures. Racial and ethnic disparities have been reported in pediatric ED imaging. Our…

View details →DOI: 10.1016/j.pediatrneurol.2026.05.005
Negative / Null Result ReportMedicine

Chemical, Biological, Radiological, and Nuclear (CBRN) Disaster Preparedness among Anesthesiologists: A Multidomain Cross-Sectional Study.

Gondode, Duggal, Malviya et al. · 2026 · Disaster medicine and public health preparedness

To assess the current levels of knowledge, attitudes, practices (KAP), and institutional support regarding Chemical, Biological, Radiological, and Nuclear (CBRN) disaster preparedness among anesthesia professionals in India, and to…

View details →DOI: 10.1017/dmp.2026.10312
Negative / Null Result ReportMedicine

Infant social withdrawal with parents and strangers-The role of parental sensitivity and depression.

Rudling, Stuart, Smith-Nielsen et al. · 2026 · The British journal of developmental psychology

Infant social withdrawal is an early indicator of infant distress linked to adverse socio-emotional development. We hypothesized that parental sensitivity moderates an association between parental depression (PPD) and infant social…

View details →DOI: 10.1111/bjdp.70054
Negative / Null Result ReportMedicine

Association between periodontal and geriatric health: a cross-sectional study.

Müller, Deschner, Mohr et al. · 2026 · Clinical oral investigations

This cross-sectional study investigated the association between periodontal status and geriatric health parameters, a relationship that has received little attention in research to date. The periodontal health of 51 geriatric patients was…

View details →DOI: 10.1007/s00784-026-06938-0
Negative / Null Result ReportMedicine

Diagnostic performance of computed tomography colonography following incomplete colonoscopy and its associated factors: A single-centre retrospective study.

Mohd Hayati, Abdul Wahid, Shamsidi et al. · 2026 · The Medical journal of Malaysia

Incomplete colonoscopy presents an important clinical challenge, as segments of the colon that are not visualised may contain significant pathology. Computed tomography colonography (CTC) provides a minimally invasive alternative for…

Negative / Null Result ReportMedicine

A real-world data analysis of the impact of clonal hematopoiesis of indeterminate potential on therapeutic efficacy and adverse events of immune checkpoint inhibitors.

Fujita, Ishibashi, Aoyama et al. · 2026 · Cancer

Clonal hematopoiesis of indeterminate potential (CHIP) has been implicated in systemic inflammation. Although immune checkpoint inhibitors (ICIs) have transformed cancer care, their response rates remain modest, and some patients…

View details →DOI: 10.1002/cncr.70398
Negative / Null Result ReportMedicine

Impact of ABCB1 (rs1045642) polymorphism on antipsychotic-induced extrapyramidal symptoms in Egyptian patients with schizophrenia.

Ahmed, Moawad, Tarek et al. · 2026 · Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association

The ABCB1 polymorphisms may influence risperidone-induced extrapyramidal symptoms (EPS) in schizophrenia. This cross-sectional study examined the relationships among ABCB1 variants, clinical factors, and objective, subjective EPS in 150…

View details →DOI: 10.1016/j.fct.2026.116181
Negative / Null Result ReportMedicine

MRI-based classification of pes anserinus tendon variations and their clinical implications in non-traumatic knees.

Çavuş, Aktürk, Argalı Deniz et al. · 2026 · Folia morphologica

The pes anserinus (PA) is a morphologically variable structure whose in vivo tendon configurations remain incompletely characterized on routine MRI. This study aimed to define the typical tritendinous configuration of the PA, identify…

View details →DOI: 10.5603/fm.111983
Negative / Null Result ReportMedicine

An Observational Study on Impact of Interim Obturators in COVID-19-Associated Mucormycosis.

Chittamuru, Vengamma, Priya et al. · 2026 · Journal of maxillofacial and oral surgery

During the second wave of COVID-19 pandemic, there was surge in reporting of COVID-19-associated mucormycosis cases. Government of India declared rhino-orbito-cerebral mucormycosis as a notifiable disease. Managing this condition posed a…

View details →DOI: 10.1007/s12663-024-02120-9
Negative / Null Result ReportMedicine

Association Between Early Versus Delayed Outpatient Follow-Up After Hospital Discharge and Short-Term Healthcare Utilization Among ICU Survivors.

Oletu, Oladimeji, Osueni et al. · 2026 · Cureus

Intensive care unit (ICU) survivors experience high rates of healthcare utilization after hospital discharge, including readmissions and emergency department (ED) visits. Timely outpatient follow-up has been proposed to improve care…

View details →DOI: 10.7759/cureus.107746