Results 121 to 130 of about 4,193,923 (352)

The P Value and Statistical Significance: Misunderstandings, Explanations, Challenges, and Alternatives

open access: yesIndian Journal of Psychological Medicine, 2019
The calculation of a P value in research and especially the use of a threshold to declare the statistical significance of the P value have both been challenged in recent years.
C. Andrade
semanticscholar   +1 more source

Multiplex single‐cell profiling of putative cancer stem cell markers ALDH1, SOX9, SOX2, CD44, CD133 and CD15 in endometrial cancer

open access: yesMolecular Oncology, EarlyView.
Cancer stem cells are associated with aggressive disease, but a deep characterization of such markers is lacking in endometrial cancer. This study uses imaging mass cytometry to explore putative cancer stem cell markers in endometrial tumors and corresponding organoid models.
Hilde E. Lien   +7 more
wiley   +1 more source

Evaluation of an EPID in vivo monitoring system using local and external independent audit measurements

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose The aim of this work was to evaluate the SunCHECK PerFRACTION, the software for in vivo monitoring using EPID images. Materials/Methods First, the PerFRACTION ability to detect errors was investigated simulating two situations: (1) variation of LINAC output and (2) variation of the phantom thickness.
Samuel Ramalho Avelino   +3 more
wiley   +1 more source

Prognostic factors in exacerbated chronic obstructive pulmonary disease

open access: yesRevista Electrónica Dr. Zoilo E. Marinello Vidaurreta, 2021
Background: chronic obstructive pulmonary disease has a high prevalence worldwide. It is important to know the mechanisms that have an influence on the high mortality of the exacerbated form of the disease.Objective: to identify the prognostic factors ...
Iraibis Rodríguez-Pérez   +3 more
doaj  

A note on the statistical view of matrix completion [PDF]

open access: yesarXiv, 2016
A very simple interpretation of matrix completion problem is introduced based on statistical models. Combined with the well-known results from missing data analysis, such interpretation indicates that matrix completion is still a valid and principled estimation procedure even without the missing completely at random (MCAR) assumption, which almost all ...
arxiv  

Peripheral blood proteome biomarkers distinguish immunosuppressive features of cancer progression

open access: yesMolecular Oncology, EarlyView.
Immune status significantly influences cancer progression. This study used plasma proteomics to analyze benign 67NR and malignant 4T1 breast tumor models at early and late tumor stages. Immune‐related proteins–osteopontin (Spp1), lactotransferrin (Ltf), calreticulin (Calr) and peroxiredoxin 2 (Prdx2)–were associated with systemic myeloid‐derived ...
Yeon Ji Park   +6 more
wiley   +1 more source

Digital radiography image quality evaluation using various phantoms and software

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose To investigate the effect of the exposure parameters on image quality (IQ) metrics of phantom images, obtained automatically using software or from visual evaluation. Methods Three commercial phantoms and a homemade phantom constructed according to the instructions given in the IAEA Human Health Series No.
Ioannis A. Tsalafoutas   +4 more
wiley   +1 more source

Análisis interino en ensayos clínicos: un estudio meta-epidemiológico

open access: yesMedicina U.P.B., 2017
Objetivo: la responsabilidad ética del investigador obliga al monitoreo de la seguridad de los participantes a través del estudio y, por ende, se requiere de un comité de moni-toreo de datos, cuya tarea principal es el análisis interino que se refiere a ...
Laura Acevedo Ortiz   +2 more
doaj   +1 more source

Statistical Laws in Complex Systems [PDF]

open access: yesSpringer Series Understanding Complex Systems (2024)
Statistical laws describe regular patterns observed in diverse scientific domains, ranging from the magnitude of earthquakes (Gutenberg-Richter law) and metabolic rates in organisms (Kleiber's law), to the frequency distribution of words in texts (Zipf's and Herdan-Heaps' laws), and productivity metrics of cities (urban scaling laws).
arxiv   +1 more source

Stochastic variation in the FOXM1 transcription program mediates replication stress tolerance

open access: yesMolecular Oncology, EarlyView.
Cellular heterogeneity is a major cause of drug resistance in cancer. Segeren et al. used single‐cell transcriptomics to investigate gene expression events that correlate with sensitivity to the DNA‐damaging drugs gemcitabine and prexasertib. They show that dampened expression of transcription factor FOXM1 and its target genes protected cells against ...
Hendrika A. Segeren   +4 more
wiley   +1 more source

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