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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.

1894 results for "Mpro" · page 7 of 64

Negative / Null Result ReportOpen accessMedicine

Randomized Controlled Trial on the Effects of a Combined Intervention of Computerized Cognitive Training Preceded by Physical Exercise for Improving Frailty Status and Cognitive Function in Older Adults

Ruby Yu, Grace Leung, Jean Woo · 2021 · International Journal of Environmental Research and Public Health

(1) Objective: This study examined the effects of a combined intervention of Brainastic computerized cognitive training (CCT) preceded by physical exercise (PE) for improving frailty status and cognitive function in older adults. (2) Methods: Older adults aged 50 years or older attending elderly centers, without frailty/history of cognitive impairment, were randomly allocated into either a 12-week (i) multi-domain CCT + PE (n = 117), (ii) two-domain CCT + PE (n = 116) or (iii) video watching + PE (i.e., control, n = 114). Brainastic is an online application for cognitive training through video

View details →DOI: 10.3390/ijerph18041396Cited by 40
Negative / Null Result ReportOpen accessMedicine

Efficacy of Different Nitric Oxide-Based Strategies in Preventing Experimental Cerebral Malaria by Plasmodium berghei ANKA

Yuri Chaves Martins, Graziela Maria Zaniní, John A. Frangos et al. · 2012 · PLoS ONE

BACKGROUND: Low nitric oxide (NO) bioavailability plays a role in the pathogenesis of human as well as of experimental cerebral malaria (ECM) caused by Plasmodium berghei ANKA (PbA). ECM is partially prevented by administration of the NO-donor dipropylenetriamine NONOate (DPTA-NO) at high concentration (1 mg/mouse), which also induces major side effects such as a sharp drop in blood pressure. We asked whether alternative strategies to improve NO bioavailability with minor side effects would also be effective in preventing ECM. METHODOLOGY/PRINCIPAL FINDINGS: Mice were infected with PbA and pro

View details →DOI: 10.1371/journal.pone.0032048Cited by 40
Negative / Null Result ReportOpen accessMedicine

Selective decontamination of the oral and digestive tract in surgical versus non-surgical patients in intensive care in a cluster-randomized trial

Wilhelmina G. Melsen, Anne Marie G. A. de Smet, Jan Kluytmans et al. · 2011 · British journal of surgery

BACKGROUND: Selective digestive decontamination (SDD) and selective oropharyngeal decontamination (SOD) are effective in improving survival in patients under intensive care. In this study possible differential effects in surgical and…

View details →DOI: 10.1002/bjs.7703Cited by 40
Negative / Null Result Report

Statistically supported real driving emission calibration: Using cycle generation to provide vehicle-specific and statistically representative test scenarios for Euro 7

Johannes Claßen, Stefan Pischinger, Sascha Krysmon et al. · 2020 · International Journal of Engine Research

The progression of emission legislation has intensified the efforts of the automotive industry to develop improved exhaust gas after-treatment systems. The requirement to fulfill Euro 6d-TEMP in real-world driving scenarios, the already…

View details →DOI: 10.1177/1468087420935221Cited by 40
Negative / Null Result ReportOpen accessMedicine

Pharmacokinetics and Pharmacodynamics of Intensive Antituberculosis Treatment of Tuberculous Meningitis

Junjie Ding, Nguyễn Thụy Thương Thương, Toi Van Pham et al. · 2020 · Clinical Pharmacology & Therapeutics

The most effective antituberculosis drug treatment regimen for tuberculous meningitis is uncertain. We conducted a randomized controlled trial comparing standard treatment with a regimen intensified by rifampin 15 mg/kg and levofloxacin for the first 60 days. The intensified regimen did not improve survival or any other outcome. We therefore conducted a nested pharmacokinetic/pharmacodynamic study in 237 trial participants to define exposure-response relationships that might explain the trial results and improve future therapy. Rifampin 15 mg/kg increased plasma and cerebrospinal fluid (CSF) e

View details →DOI: 10.1002/cpt.1783Cited by 40
Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

Mouth Rinsing With Carbohydrate Solutions at the Postprandial State Fail to Improve Performance During Simulated Cycling Time Trials

Theocharis Ispoglou, D. A. O’Kelly, Athanasia Angelopoulou et al. · 2015 · The Journal of Strength and Conditioning Research

Mouth rinsing with carbohydrate (CHO) solutions during cycling time trials results in performance enhancements; however, most studies have used approximately 6% CHO solutions. Therefore, the purpose of this study was to compare the…

View details →DOI: 10.1519/jsc.0000000000000882Cited by 39
Negative / Null Result ReportOpen accessMedicine

Raltegravir-intensified initial antiretroviral therapy in advanced HIV disease in Africa: A randomised controlled trial

Cissy Kityo, Alexander J. Szubert, Abraham Siika et al. · 2018 · PLoS Medicine

BACKGROUND: In sub-Saharan Africa, individuals infected with HIV who are severely immunocompromised have high mortality (about 10%) shortly after starting antiretroviral therapy (ART). This group also has the greatest risk of morbidity and mortality associated with immune reconstitution inflammatory syndrome (IRIS), a paradoxical response to successful ART. Integrase inhibitors lead to significantly more rapid declines in HIV viral load (VL) than all other ART classes. We hypothesised that intensifying standard triple-drug ART with the integrase inhibitor, raltegravir, would reduce HIV VL fast

View details →DOI: 10.1371/journal.pmed.1002706Cited by 39
Negative / Null Result ReportOpen accessMedicine

Comparison of placebo and best available therapy for the treatment of myelofibrosis in the phase 3 COMFORT studies

Ruben A. Mesa, Jean‐Jacques Kiladjian, Srđan Verstovšek et al. · 2013 · Haematologica

Prior to Janus kinase inhibitors, available therapies for myelofibrosis were generally supportive and did not improve survival. This analysis compares efficacy outcomes of patients with myelofibrosis in the control arms (placebo [n=154]…

View details →DOI: 10.3324/haematol.2013.087650Cited by 39
Negative / Null Result Report

Daytime Exposure to Short- and Medium-Wavelength Light Did Not Improve Alertness and Neurobehavioral Performance

Ahuva Y. Segal, Tracey L. Sletten, Erin E. Flynn-Evans et al. · 2016 · Journal of Biological Rhythms

While previous studies have demonstrated short-wavelength sensitivity to the acute alerting effects of light during the biological night, fewer studies have assessed the alerting effect of light during the daytime. This study assessed the…

View details →DOI: 10.1177/0748730416659953Cited by 38
Negative / Null Result ReportOpen accessMedicine

Proactive vs Reactive Treatment of Hypotension During Surgery

Matthijs Kant, Wilton A. van Klei, Markus W. Hollmann et al. · 2025 · JAMA

Importance: Intraoperative hypotension is associated with adverse postoperative outcomes, but whether a proactive strategy to prevent intraoperative hypotension improves outcomes is uncertain. Objective: To determine whether intraoperative…

View details →DOI: 10.1001/jama.2025.18007Cited by 38
Negative / Null Result Report

Variability of sulfate signal in ice core records based on five replicate cores

E. Gautier, J. Savarino, J. Erbland et al. · 2016 · Climate of the Past

Abstract. Current volcanic reconstructions based on ice core analysis have significantly improved over the past few decades by incorporating multiple-core analyses with a high temporal resolution from different parts of the polar regions…

View details →DOI: 10.5194/cp-12-103-2016Cited by 38
Negative / Null Result ReportOpen accessNursing

High intake of saturated fat, but not polyunsaturated fat, improves survival in heart failure despite persistent mitochondrial defects

Tatiana Galvão, Bethany H. Brown, Peter Hecker et al. · 2011 · Cardiovascular Research

AIMS: The impact of a high-fat diet on the failing heart is unclear, and the differences between polyunsaturated fatty acids (PUFA) and saturated fat have not been assessed. Here, we compared a standard low-fat diet to high-fat diets…

View details →DOI: 10.1093/cvr/cvr258Cited by 37
Negative / Null Result ReportOpen accessPsychology

No effect of focused attention whilst eating on later snack food intake: Two laboratory experiments

Victoria Whitelock, Suzanne Higgs, Jeffrey M. Brunstrom et al. · 2018 · Appetite

Focusing attention on food during a meal has been shown to reduce later snack consumption. We report the results of two studies that aimed to replicate this effect and to elucidate the underlying mechanisms. We hypothesised that focused attention during a lunchtime meal would improve visual memory and/or memory for the satiating effects of the meal, and that this would reduce later food intake. In Study 1, participants (N = 108, 52.8% female, BMI M = 25.75 kg/m2) were randomly allocated to eat a fixed lunchtime meal while listening to instructions that encouraged them to pay attention to the s

View details →DOI: 10.1016/j.appet.2018.06.002Cited by 37
Negative / Null Result ReportOpen accessPhysics and Astronomy

Reassessment of the Null Result of the HST Search for Planets in 47 Tucanae

K. Masuda, Joshua N. Winn · 2017 · The Astronomical Journal

Abstract We revisit the null result of the Hubble Space Telescope search for transiting planets in the globular cluster 47 Tucanae, in the light of improved knowledge of planet occurrence from the Kepler mission. Gilliland and co-workers…

View details →DOI: 10.3847/1538-3881/aa647cCited by 37
Negative / Null Result ReportOpen accessMedicine

Refined clinical scoring in comparative EAE studies does not enhance the chance to observe statistically significant differences

Silvia Tietz, Marcel Zwahlen, Neda Haghayegh Jahromi et al. · 2016 · European Journal of Immunology

Considering the 3R rules of animal experimentation, we asked if refined scoring of experimental autoimmune encephalomyelitis (EAE) in mice improves documentation of clinical EAE allowing to perform a more powerful statistical analysis.…

View details →DOI: 10.1002/eji.201546272Cited by 36
Replication FailureOpen accessMedicine

Azithromycin therapy for prevention of chronic lung disease of prematurity (AZTEC): a multicentre, double-blind, randomised, placebo-controlled trial

John Lowe, David Gillespie, Ali F. Aboklaish et al. · 2024 · The Lancet Respiratory Medicine

BACKGROUND: Systematic reviews have reported conflicting evidence on whether macrolide antibiotics reduce rates of chronic lung disease of prematurity (CLD) in at-risk preterm infants born at less than 30 weeks' gestation, including in those colonised with pulmonary Ureaplasma spp. Since an adequately powered trial has been lacking, we aimed to assess if the macrolide azithromycin improved survival without the development of physiologically defined moderate or severe CLD in preterm infants. METHODS: AZTEC was a multicentre, double-blind, randomised, placebo-controlled trial conducted in 28 ter

View details →DOI: 10.1016/s2213-2600(24)00079-1Cited by 36
Negative / Null Result Report

Addition of Inflammatory Biomarkers Did Not Improve Diabetes Prediction in the Community: The Framingham Heart Study

Dhayana Dallmeier, Martin G. Larson, Na Wang et al. · 2012 · Journal of the American Heart Association

Background Prior studies have reported conflicting findings with regard to the association of biomarkers in the prediction of incident type 2 diabetes. We evaluated 12 biomarkers as possible diabetes predictors in the F ramingham H eart S…

View details →DOI: 10.1161/jaha.112.000869Cited by 35
Negative / Null Result ReportOpen accessMedicine

Adding Concurrent Chemotherapy to Intensity-Modulated Radiotherapy Does Not Improve Treatment Outcomes for Stage II Nasopharyngeal Carcinoma: A Phase 2 Multicenter Clinical Trial

Xiaodong Huang, Xiaozhong Chen, Chong Zhao et al. · 2020 · Frontiers in Oncology

Purpose: To explore the efficacy of concomitant chemotherapy in intensity-modulated radiotherapy(IMRT) to treat stage II nasopharyngeal carcinoma (NPC). Methods and Materials: In this randomized phase 2 study (registered with ClinicalTrials.gov, (NCT01187238)), eligible patients with stage II (2010 UICC/AJCC) NPC were randomly assigned to either IMRT alone (RT group) or IMRT combined with concurrent cisplatin (40 mg/m2, weekly) (CCRT group). The primary endpoint was overall survival (OS). The second endpoints included local failure-free survival (LFFS), regional failure-free survival (RFFS), d

View details →DOI: 10.3389/fonc.2020.01314Cited by 35
Negative / Null Result ReportOpen accessMathematics

Scaling of contact networks for epidemic spreading in urban transit systems

Xinwu Qian, Lijun Sun, Satish V. Ukkusuri · 2021 · Scientific Reports

Improved mobility not only contributes to more intensive human activities but also facilitates the spread of communicable disease, thus constituting a major threat to billions of urban commuters. In this study, we present a multi-city investigation of communicable diseases percolating among metro travelers. We use smart card data from three megacities in China to construct individual-level contact networks, based on which the spread of disease is modeled and studied. We observe that, though differing in urban forms, network layouts, and mobility patterns, the metro systems of the three cities

View details →DOI: 10.1038/s41598-021-83878-7Cited by 35
Negative / Null Result ReportOpen accessMedicine

Machine learning with sparse nutrition data to improve cardiovascular mortality risk prediction in the USA using nationally randomly sampled data

Joseph Rigdon, Sanjay Basu · 2019 · BMJ Open

OBJECTIVES: We aimed to test whether or not adding (1) nutrition predictor variables and/or (2) using machine learning models improves cardiovascular death prediction versus standard Cox models without nutrition predictor variables.…

View details →DOI: 10.1136/bmjopen-2019-032703Cited by 35
Negative / Null Result ReportOpen accessMedicine

NEWS 2 – too little evidence to implement?

Luke Hodgson, Jo Congleton, Richard Venn et al. · 2018 · Clinical Medicine

ABSTRACT The Royal College of Physicians (RCP) recently published the National Early Warning Score 2 (NEWS2), aiming to improve safety for patients with hypercapnic respiratory failure by suggesting a separate oxygen saturation (SpO2)…

View details →DOI: 10.7861/clinmedicine.18-5-371Cited by 35
Negative / Null Result ReportOpen accessMedicine

A 6-month, subject-masked, randomized controlled study to assess efficacy of dexamethasone as an adjunct to bevacizumab compared with bevacizumab alone in the treatment of patients with macular edema due to central or branch retinal vein occlusion

Michael Stewart, Raj K. Maturi, Vincent Chen et al. · 2014 · Clinical ophthalmology

AIMS: To determine if intravitreal bevacizumab combined with the dexamethasone intravitreal implant 0.7 mg improves visual acuity and macular thickness more than bevacizumab monotherapy in eyes with macular edema due to branch and central…

View details →DOI: 10.2147/opth.s60159Cited by 35
Negative / Null Result ReportOpen accessMedicine

Very Early Administration of Progesterone Does Not Improve Neuropsychological Outcomes in Subjects with Moderate to Severe Traumatic Brain Injury

Felicia C. Goldstein, Angela F. Caveney, Vicki Hertzberg et al. · 2016 · Journal of Neurotrauma

A Phase III, double-blind, placebo-controlled trial (ProTECT III) found that administration of progesterone did not reduce mortality or improve functional outcome as measured by the Glasgow Outcome Scale Extended (GOSE) in subjects with…

View details →DOI: 10.1089/neu.2015.4313Cited by 34
Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology

Mouth Rinsing with Maltodextrin Solutions Fails to Improve Time Trial Endurance Cycling Performance in Recreational Athletes

Tugba Nilay Kulaksız, Şükran Nazan Koşar, Süleyman Bulut et al. · 2016 · Nutrients

The carbohydrate (CHO) concentration of a mouth rinsing solution might influence the CHO sensing receptors in the mouth, with consequent activation of brain regions involved in reward, motivation and regulation of motor activity. The purpose of the present study was to examine the effects of maltodextrin mouth rinsing with different concentrations (3%, 6% and 12%) after an overnight fast on a 20 km cycling time trial performance. Nine recreationally active, healthy males (age: 24 ± 2 years; V ˙ O 2 m a x : 47 ± 5 mL·kg(-1)·min(-1)) participated in this study. A double-blind, placebo-controlled

View details →DOI: 10.3390/nu8050269Cited by 34
Negative / Null Result Report

Higher Incentive Payments in Medicare Advantage's Pay‐for‐Performance Program Did Not Improve Quality But Did Increase Plan Offerings

Timothy J. Layton, Andrew M. Ryan · 2015 · Health Services Research

Objective To evaluate the effects of the size of financial bonuses on quality of care and the number of plan offerings in the Medicare Advantage Quality Bonus Payment Demonstration. Data Sources Publicly available data from CMS from 2009…

View details →DOI: 10.1111/1475-6773.12409Cited by 32
Negative / Null Result Report

How to Use SNP_TATA_Comparator to Find a Significant Change in Gene Expression Caused by the Regulatory SNP of This Gene’s Promoter via a Change in Affinity of the TATA-Binding Protein for This Promoter

Mikhail Ponomarenko, Dmitry Rasskazov, Olga Arkova et al. · 2015 · BioMed Research International

The use of biomedical SNP markers of diseases can improve effectiveness of treatment. Genotyping of patients with subsequent searching for SNPs more frequent than in norm is the only commonly accepted method for identification of SNP…

View details →DOI: 10.1155/2015/359835Cited by 32
Negative / Null Result Report

Mobile‐bearing prosthesis did not improve mid‐term clinical results of total knee arthroplasty

Shuichi Matsuda, Hideki Mizu‐uchi, Shingo Fukagawa et al. · 2010 · Knee Surgery, Sports Traumatology, Arthroscopy

Abstract A prospective study was performed to compare the clinical and radiological results of mobile‐ and fixed‐bearing total knee arthroplasty with specific attention to rotational alignment and range of motion. Sixty‐one knees were…

View details →DOI: 10.1007/s00167-010-1143-zCited by 32
Negative / Null Result ReportOpen accessComputer Science

Is K-fold cross validation the best model selection method for machine learning?

J. M. Górriz, R. Martin-Clemente, F. Segovia et al. · 2026 · Information Fusion

As a technique that can compactly represent complex patterns, machine learning has significant potential for predictive inference in multi-source and heterogeneous information fusion scenarios. K-fold cross-validation (CV) is the most common approach for ascertaining the likelihood that a machine learning outcome is generated by chance and frequently outperforms conventional hypothesis testing. This improvement arises from measures directly obtained from machine learning classifications, such as accuracy, that do not have a parametric description. To approach a frequentist analysis within fusi

View details →DOI: 10.1016/j.inffus.2026.104404Cited by 32
Negative / Null Result ReportMedicine

Prognosis of Patients with Esophageal Carcinoma After Routine Thoracic Duct Resection

Taro Oshikiri, Hodaka Numasaki, Junya Oguma et al. · 2021 · Annals of Surgery

OBJECTIVE: To clarify whether routine thoracic duct (TD) resection improves the prognosis of patients with esophageal cancer after radical esophagectomy. SUMMARY OF BACKGROUND DATA: Although TD resection can cause nutritional disadvantage…

View details →DOI: 10.1097/sla.0000000000005340Cited by 31