Negative / Null Result ReportEconomics, Econometrics and Finance
Michael T. Owyang, Valerie Ramey, Sarah Zubairy · 2013 · American Economic Review
A key question that has arisen during recent debates is whether government spending multipliers are larger during times when resources are idle. This paper seeks to shed light on this question by analyzing new quarterly historical data…
View details →Negative / Null Result ReportOpen accessMedicine
A. Sun, Kyounghwa Bae, Elizabeth Gore et al. · 2010 · Journal of Clinical Oncology
PURPOSE: There are scant data regarding the effects of prophylactic cranial irradiation (PCI) on neurocognitive function (NCF) and quality of life (QOL). Radiation Therapy Oncology Group trial 0214 showed no overall survival (OS) benefit…
View details →Negative / Null Result ReportOpen accessMedicine
Cornelis Blauwendraat, Karl Heilbron, Costanza L. Vallerga et al. · 2019 · Movement Disorders
BACKGROUND: Increasing evidence supports an extensive and complex genetic contribution to PD. Previous genome-wide association studies (GWAS) have shed light on the genetic basis of risk for this disease. However, the genetic determinants…
View details →Negative / Null Result ReportOpen accessAgricultural and Biological Sciences
Achille Schiavone, Michele De Marco, Silvia Martínez-Miró et al. · 2017 · Journal of Animal Science and Biotechnology/Journal of animal science and biotechnology
The study aimed to determine the apparent total tract digestibility coefficients (ATTDC) of nutrients, the apparent metabolizable energy (AME and AMEn) and the amino acid (AA) apparent ileal digestibility coefficients (AIDC) of a partially defatted (BSFp) and a highly defatted (BSFh) black soldier fly larvae meal. The experimental diets were: a basal diet and two diets prepared by substituting 250 g/kg (w/w) of the basal diet with BSFp or BSFh, respectively. Significant differences were found between BSFp and BSFh meals for ATTDC of the nutrients: BSFp resulted more digestible than BSFh, excep
View details →Negative / Null Result ReportOpen accessMedicine
Danny Rischin, Lester J. Peters, Brian O’Sullivan et al. · 2010 · Journal of Clinical Oncology
PURPOSE: Promising results in a randomized phase II trial with the hypoxic cytotoxin tirapazamine (TPZ) combined with cisplatin (CIS) and radiation led to this phase III trial. PATIENTS AND METHODS: Patients with previously untreated stage…
View details →Negative / Null Result ReportOpen accessHealth Professions
Denis Agniel, Isaac S. Kohane, Griffin M. Weber · 2018 · BMJ
OBJECTIVE: To evaluate on a large scale, across 272 common types of laboratory tests, the impact of healthcare processes on the predictive value of electronic health record (EHR) data. DESIGN: Retrospective observational study. SETTING:…
View details →Negative / Null Result ReportMedicine
Ann Ganestam, Thomas Kallemose, Anders Troelsen et al. · 2015 · Knee Surgery Sports Traumatology Arthroscopy
The purpose of this study is to investigate the incidence of acute Achilles tendon rupture in Denmark from 1994 to 2013 with focus on sex, age, geographical areas, seasonal variation and choice of treatment. The National Patient Registry…
View details →Negative / Null Result ReportOpen accessDecision Sciences
Artur Strzelecki · 2023 · Innovative Higher Education
Abstract AI-powered chat technology is an emerging topic worldwide, particularly in areas such as education, research, writing, publishing, and authorship. This study aims to explore the factors driving students' acceptance of ChatGPT in higher education. The study employs the unified theory of acceptance and use of technology (UTAUT2) theoretical model, with an extension of Personal innovativeness, to verify the Behavioral intention and Use behavior of ChatGPT by students. The study uses data from a sample of 503 Polish state university students. The PLS-SEM method is utilized to test the mod
View details →Negative / Null Result ReportNeuroscience
Hjördís Ósk Atladóttir, Tine Brink Henriksen, Diana Schendel et al. · 2012 · PEDIATRICS
OBJECTIVES: Results of animal studies suggest that maternal immune activation during pregnancy causes deficiencies in fetal neurodevelopment. Infectious disease is the most common path to maternal immune activation during pregnancy. The…
View details →Negative / Null Result ReportEconomics, Econometrics and Finance
Charles Courtemanche, James Marton, Benjamin Ukert et al. · 2016 · Journal of Policy Analysis and Management
The Affordable Care Act (ACA) aimed to achieve nearly universal health insurance coverage in the United States through a combination of insurance market reforms, mandates, subsidies, health insurance exchanges, and Medicaid expansions,…
View details →Negative / Null Result ReportOpen accessSocial Sciences
Saša Petrović, Miles Osborne, Victor Lavrenko · 2021 · Proceedings of the International AAAI Conference on Web and Social Media
Twitter is a very popular way for people to share information on a bewildering multitude of topics. Tweets are propagated using a variety of channels: by following users or lists, by searching or by retweeting. Of these vectors, retweeting…
View details →Negative / Null Result ReportOpen accessMedicine
Stephanie Cardarella, Atsuko Ogino, Mizuki Nishino et al. · 2013 · Clinical Cancer Research
PURPOSE: BRAF mutations are found in a subset of non-small cell lung cancers (NSCLC). We examined the clinical characteristics and treatment outcomes of patients with NSCLC harboring BRAF mutations. EXPERIMENTAL DESIGN: Using DNA…
View details →Negative / Null Result ReportOpen accessMedicine
May Al-Nbaheen, Radhakrishnan Vishnubalaji, Dalia Ali et al. · 2012 · Stem Cell Reviews and Reports
Human stromal (mesenchymal) stem cells (hMSCs) are multipotent stem cells with ability to differentiate into mesoderm-type cells e.g. osteoblasts and adipocytes and thus they are being introduced into clinical trials for tissue regeneration. Traditionally, hMSCs have been isolated from bone marrow, but the number of cells obtained is limited. Here, we compared the MSC-like cell populations, obtained from alternative sources for MSC: adipose tissue and skin, with the standard phenotype of human bone marrow MSC (BM-MSCs). MSC from human adipose tissue (human adipose stromal cells (hATSCs)) and h
View details →Negative / Null Result ReportOpen accessBiochemistry, Genetics and Molecular Biology
Velma T. E. Aho, Pedro A. B. Pereira, Sari Voutilainen et al. · 2019 · EBioMedicine
BACKGROUND: Several publications have described differences in cross-sectional comparisons of gut microbiota between patients with Parkinson's disease and control subjects, with considerable variability of the reported differentially…
View details →Negative / Null Result ReportMedicine
Joseph Kan, Taichiro Morimoto, Kitichai Rungcharassaeng et al. · 2010 · PubMed
This study evaluated the reliability of assessing visually the facial gingival biotype of maxillary anterior teeth with and without the use of a periodontal probe in comparison with direct measurements. Forty-eight patients (20 men, 28…
View details →Negative / Null Result ReportMedicine
Laura A. Pratt, Debra J. Brody, Qiuping Gu · 2011 · PubMed
In 2005–2008, 11% of Americans aged 12 and over took antidepressant medication. There were significant differences in antidepressant medication usage rates between groups. Females were 2½ times as likely as males to take antidepressants.…
View details →Negative / Null Result ReportOpen accessSocial Sciences
Valerie A. Earnshaw, Lisa A. Eaton, Seth C. Kalichman et al. · 2020 · Translational Behavioral Medicine
Conspiracy theories have been proliferating during the COVID-19 pandemic. Evidence suggests that belief in conspiracy theories undermines engagement in pro-health behaviors and support for public health policies. Moreover, previous work…
View details →Negative / Null Result ReportMedicine
Brian A. Boone, Mazen S. Zenati, Melissa E. Hogg et al. · 2015 · JAMA Surgery
IMPORTANCE: Quality assessment is an important instrument to ensure optimal surgical outcomes, particularly during the adoption of new surgical technology. The use of the robotic platform for complex pancreatic resections, such as the…
View details →Negative / Null Result ReportOpen accessMedicine
Andrew McArdle, Ortensia Vito, Harsita Patel et al. · 2021 · New England Journal of Medicine
BACKGROUND: Evidence is urgently needed to support treatment decisions for children with multisystem inflammatory syndrome (MIS-C) associated with severe acute respiratory syndrome coronavirus 2. METHODS: We performed an international…
View details →Negative / Null Result ReportOpen accessSocial Sciences
Mario Fiorini, Michael P. Keane · 2014 · Journal of Labor Economics
The allocation of children’s time among different activities may be important for cognitive and noncognitive development. Here, we exploit time use diaries from the Longitudinal Study of Australian Children to study the effects of time…
View details →Negative / Null Result ReportOpen accessMedicine
Carlo Catassi, Debby Kryszak, Bushra Bhatti et al. · 2010 · Annals of Medicine
BACKGROUND: The natural history and the possible changes of celiac disease (CD) prevalence over time are still unclear. OBJECTIVES: 1) To establish whether loss of tolerance to gluten may occur at any age; 2) to investigate possible…
View details →Negative / Null Result ReportOpen accessEnvironmental Science
Silke Langenheder, Anna J. Székely · 2011 · The ISME Journal
Many studies have shown that species sorting, that is, the selection by local environmental conditions is important for the composition and assembly of bacterial communities. On the other hand, there are other studies that could show that…
View details →Negative / Null Result ReportBusiness, Management and Accounting
Robert M. Bushman, Joseph D. Piotroski, Abbie J. Smith · 2011 · Journal of Business Finance & Accounting
Abstract: This paper explores direct relations between corporate investment behavior and the timeliness of accounting recognition of economic losses (TLR) reflected in a country's accounting regime. We explicitly investigate the extent to…
View details →Negative / Null Result ReportOpen accessEnvironmental Science
Arindam Samanta, Sangram Ganguly, Hirofumi Hashimoto et al. · 2010 · Geophysical Research Letters
The sensitivity of Amazon rainforests to dry‐season droughts is still poorly understood, with reports of enhanced tree mortality and forest fires on one hand, and excessive forest greening on the other. Here, we report that the previous…
View details →Negative / Null Result ReportOpen accessEngineering
Fiona E. Freeman, Daniel J. Kelly · 2017 · Scientific Reports
Alginate is a commonly used bioink in 3D bioprinting. Matrix stiffness is a key determinant of mesenchymal stem cell (MSC) differentiation, suggesting that modulation of alginate bioink mechanical properties represents a promising strategy to spatially regulate MSC fate within bioprinted tissues. In this study, we define a printability window for alginate of differing molecular weight (MW) by systematically varying the ratio of alginate to ionic crosslinker within the bioink. We demonstrate that the MW of such alginate bioinks, as well as the choice of ionic crosslinker, can be tuned to contro
View details →Negative / Null Result ReportBusiness, Management and Accounting
Carmelo Cennamo, Juan Santaló · 2019 · Organization Science
Platform-based technology ecosystems are new forms of organizing independent actors’ innovations around a stable product system. This collective organization is proving superior to traditional, vertically integrated systems in many sectors…
View details →Negative / Null Result ReportSocial Sciences
David Figlio, Mark Rush, Lu Yin · 2013 · Journal of Labor Economics
This article presents the first experimental evidence on the effects of live versus Internet media of instruction. Students in a large introductory microeconomics course at a major research university were randomly assigned to live…
View details →Negative / Null Result ReportOpen accessBusiness, Management and Accounting
Sun Young Sung, Jin Nam Choi · 2013 · Journal of Organizational Behavior
The present study examines the effects of training and development on organizational innovation. We specifically suggest that the training and development investments of an organization affect its innovative performance by promoting…
View details →Negative / Null Result ReportPhysics and Astronomy
Jiawei Fan, Jiazhou Wang, Zhi Chen et al. · 2018 · Medical Physics
Purpose To develop an automated treatment planning strategy for external beam intensity‐modulated radiation therapy ( IMRT ), including a deep learning‐based three‐dimensional (3D) dose prediction and a dose distribution‐based plan…
View details →Negative / Null Result ReportOpen accessPsychology
Mohit Varshney, Jithin Thomas Parel, Neeraj Raizada et al. · 2020 · PLoS ONE
BACKGROUND: The pandemic of Corona Virus (COVID-19) hit India recently; and the associated uncertainty is increasingly testing psychological resilience of the masses. When the global focus has mostly been on testing, finding a cure and preventing transmission; people are going through a myriad of psychological problems in adjusting to the current lifestyles and fear of the disease. Since there is a severe dearth of researches on this issue, we decided to conduct an online survey to evaluate its psychological impact. METHODS: From 26th to 29th March an online survey (FEEL-COVID) was conducted u
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