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2,364 Results Found

  • Article
  • Open Access
2 Citations
4,255 Views
16 Pages

Evaluating COVID-19 Vaccine Efficacy Using Kaplan–Meier Survival Analysis

  • Waleed Hilal,
  • Michael G. Chislett,
  • Yuandi Wu,
  • Brett Snider,
  • Edward A. McBean,
  • John Yawney and
  • Stephen Andrew Gadsden

Analyses of COVID-19 vaccines have become a forefront of pandemic-related research, as jurisdictions around the world encourage vaccinations as the most assured method to curtail the need for stringent public health measures. Kaplan–Meier model...

  • Article
  • Open Access
1 Citations
2,995 Views
15 Pages

Actuarial Analysis of Survival among Breast Cancer Patients in Lithuania

  • Aldona Skučaitė,
  • Alma Puvačiauskienė,
  • Rokas Puišys and
  • Jonas Šiaulys

Breast cancer is the most common cause of mortality due to cancer for women both in Lithuania and worldwide. Chances of survival after diagnosis differ significantly depending on the stage of disease at the time of diagnosis. Extended term periods ar...

  • Article
  • Open Access
3 Citations
4,409 Views
14 Pages

Determinants of Length of Stay for Medical Inpatients Using Survival Analysis

  • Jaekyeong Kim,
  • Haegak Chang,
  • Seiyoung Ryu,
  • Ilyoung Choi,
  • Angela Eunyoung Kwon and
  • Haeyong Ji

With the increase in insured patients and an aging population, managing the length of stay (LOS) for inpatients has become crucial for controlling medical costs. Analyzing the factors influencing LOS is necessary for effective management. Previous st...

  • Article
  • Open Access
3,350 Views
8 Pages

19 July 2024

Telescopic crown-retained dentures (TCDs) are one of the most common types of prosthetic restorations for partially edentulous patients; however, post and core (PC) treatment shows the worst survival probability if the tooth is used as an abutment fo...

  • Article
  • Open Access
6 Citations
2,899 Views
17 Pages

An Invasive Disease Event-Free Survival Analysis to Investigate Ki67 Role with Respect to Breast Cancer Patients’ Age: A Retrospective Cohort Study

  • Raffaella Massafra,
  • Samantha Bove,
  • Daniele La Forgia,
  • Maria Colomba Comes,
  • Vittorio Didonna,
  • Gianluca Gatta,
  • Francesco Giotta,
  • Agnese Latorre,
  • Annalisa Nardone and
  • Vito Lorusso
  • + 7 authors

28 April 2022

Characterization of breast cancer into intrinsic molecular profiles has allowed women to live longer, undergoing personalized treatments. With the aim of investigating the relation between different values of ki67 and the predisposition to develop a...

  • Article
  • Open Access
3 Citations
1,480 Views
20 Pages

Understanding cancer survival is important for countries such as Antigua and Barbuda, where female breast, cervical, colorectal, and prostate cancers are burdensome to the healthcare system. This study therefore aimed to estimate the survival probabi...

  • Article
  • Open Access
1 Citations
2,163 Views
10 Pages

(1) Background: As Kaplan–Meier (KM) analysis is limited to single unidirectional endpoints, most advanced cancer randomized clinical trials (RCTs) are powered for either progression-free survival (PFS) or overall survival (OS). This discards e...

  • Article
  • Open Access
1,468 Views
22 Pages

4 October 2024

Background/Objectives: In Korea’s emergency medical system, when an emergency patient arises, patients receive on-site treatment and care during transport at the pre-hospital stage, followed by inpatient treatment upon hospitalization. From the...

  • Article
  • Open Access
1 Citations
2,105 Views
11 Pages

Impact of Treating Age-Related Macular Degeneration before Visual Function Is Impaired

  • Risa Aichi,
  • Norihiro Nagai,
  • Kishiko Ohkoshi and
  • Yoko Ozawa

27 September 2022

Visual outcomes of age-related macular degeneration (AMD) have substantially improved via anti-vascular endothelial growth factor (anti-VEGF) therapy. However, the treatment effects vary among individuals. Medical charts of 104 eyes (104 patients) wi...

  • Article
  • Open Access
326 Views
26 Pages

7 January 2026

A robust audit services market is essential for ensuring financial transparency, regulatory compliance, and investor confidence. As a dimension of organizational sustainability, the capacity of audit firms to remain competitive and resilient under ma...

  • Article
  • Open Access
1,394 Views
7 Pages

26 November 2024

According to the Host Manipulation Hypothesis, parasites modify the phenotype of their host to enhance host–host transmission and thereby increase fitness. Metacercarial infection of some amphibians changes host behavior, including locomotion,...

  • Article
  • Open Access
136 Citations
14,925 Views
16 Pages

14 February 2018

Hepatocellular carcinoma (HCC) is a devastating disease worldwide. Though many efforts have been made to elucidate the process of HCC, its molecular mechanisms of development remain elusive due to its complexity. To explore the stepwise carcinogenic...

  • Article
  • Open Access
1 Citations
4,861 Views
12 Pages

Systematic Intravenous Administration of Autologous Mesenchymal Stem Cells Is Safe

  • Takaaki Matsuoka,
  • Takaaki Itohara,
  • Yurie Hara and
  • Nana Kobayashi

7 December 2024

Background: Mesenchymal stem cells (MSCs) have drawn significant attention for their regenerative potential and therapeutic applicability across a range of conditions, including cardiovascular diseases and age-related frailty. Despite extensive precl...

  • Article
  • Open Access
1 Citations
751 Views
17 Pages

A Machine Learning Framework for Cancer Prognostics: Integrating Temporal and Immune Gene Dynamics via ARIMA-CNN

  • Rui-Bin Lin,
  • Linlin Zhou,
  • Yu-Chun Lin,
  • Yu Yu,
  • Hung-Chih Yang and
  • Chen-Wei Yu

11 November 2025

Background: Hepatocellular carcinoma remains a global health challenge with high mortality rates. The tumor immune microenvironment significantly impacts disease progression and survival. However, traditional analyses predominantly focus on single im...

  • Feature Paper
  • Article
  • Open Access
1 Citations
689 Views
25 Pages

3 October 2025

Electricity price spikes are the most important characteristic of the electricity price time series. Operationally, they result from various stresses in the power system or the strategic bidding behavior of market participants. These high prices are...

  • Article
  • Open Access
6 Citations
3,753 Views
23 Pages

30 July 2022

The aims of the study were: (i) to compare survival curves for cows culled for different reasons over three successive lactations using the Kaplan–Meier estimator; (ii) to determine the effects of breeding documentation parameters on cow surviv...

  • Article
  • Open Access
11 Citations
2,861 Views
13 Pages

(1) Background: Oxidative stress is crucial in carcinogenesis and the response of tumors to treatment. Antioxidant genes are important determinants of resistance to chemotherapy and radiotherapy. We hypothesized that genes involved in the oxidative s...

  • Article
  • Open Access
1 Citations
1,717 Views
12 Pages

Barriers to Long-Term Adherence in Botulinum Toxin Therapy for Post-Stroke Spasticity: Insights and Implications from a Single-Center Study in North Italy

  • Ester Cecchella,
  • Nicola Luigi Bragazzi,
  • Filippo Cotellessa,
  • William Campanella,
  • Luca Puce,
  • Lucio Marinelli,
  • Antonio Currà,
  • Cristina Schenone,
  • Laura Mori and
  • Carlo Trompetto

22 February 2025

Stroke is a leading cause of long-term disability worldwide, often resulting in spasticity. Botulinum toxin injections have emerged as a cornerstone in the management of post-stroke spasticity. However, despite their clinical efficacy, maintaining lo...

  • Article
  • Open Access
2 Citations
3,240 Views
14 Pages

The Survival of Cultural Firms: A Study of Multiple Accounting Parameters in Spain

  • Ma del Pilar Muñoz Dueñas,
  • Antonio Vaamonde Liste and
  • Maria do Rosário Cabrita

6 February 2020

Cultural firms are an important development factor in economic and social terms. Their objectives are often aimed at maintaining and disseminating the traditions and values of societies. The prosperity of these firms in a nation ensures that its tang...

  • Article
  • Open Access
3 Citations
2,721 Views
22 Pages

8 February 2023

We address the problem of how COVID-19 deaths observed in an oncology clinical trial can be consistently taken into account in typical survival estimates. We refer to oncological patients since there is empirical evidence of strong correlation betwee...

  • Article
  • Open Access
1 Citations
3,749 Views
23 Pages

An Interactive Dashboard for Statistical Analysis of Intensive Care Unit COVID-19 Data

  • Rúben Dias,
  • Artur Ferreira,
  • Iola Pinto,
  • Carlos Geraldes,
  • Cristiana Von Rekowski and
  • Luís Bento

Background: COVID-19 caused a pandemic, due to its ease of transmission and high number of infections. The evolution of the pandemic and its consequences for the mortality and morbidity of populations, especially the elderly, generated several scient...

  • Article
  • Open Access
8 Citations
8,637 Views
36 Pages

Anti-Inflammatory and Cancer-Preventive Potential of Chamomile (Matricaria chamomilla L.): A Comprehensive In Silico and In Vitro Study

  • Assia I. Drif,
  • Rümeysa Yücer,
  • Roxana Damiescu,
  • Nadeen T. Ali,
  • Tobias H. Abu Hagar,
  • Bharati Avula,
  • Ikhlas A. Khan and
  • Thomas Efferth

Background and aim: Chamomile tea, renowned for its exquisite taste, has been appreciated for centuries not only for its flavor but also for its myriad health benefits. In this study, we investigated the preventive potential of chamomile (Matricaria ...

  • Article
  • Open Access
5 Citations
5,762 Views
34 Pages

Sensitivity of Survival Analysis Metrics

  • Iulii Vasilev,
  • Mikhail Petrovskiy and
  • Igor Mashechkin

11 October 2023

Survival analysis models allow for predicting the probability of an event over time. The specificity of the survival analysis data includes the distribution of events over time and the proportion of classes. Late events are often rare and do not corr...

  • Case Report
  • Open Access
2,056 Views
20 Pages

Actuarial Analysis of Survival after Breast Cancer Diagnosis among Lithuanian Females

  • Justina Levickytė,
  • Aldona Skučaitė,
  • Jonas Šiaulys,
  • Rokas Puišys and
  • Ieva Vincerževskienė

Breast cancer is the most common cause of mortality due to cancer for women both in Lithuania and worldwide. The chances of survival after diagnosis differ significantly depending on the stage of disease at the time of diagnosis and other factors. On...

  • Review
  • Open Access
27 Citations
6,459 Views
19 Pages

24 April 2022

Background: Glycosylation changes are a main feature of cancer. Some carbohydrate epitopes and expression levels of glycosyltransferases have been used or proposed as prognostic markers, while many experimental works have investigated the role of gly...

  • Article
  • Open Access
1 Citations
5,115 Views
10 Pages

Censoring occurs when complete follow-up time information is unavailable for patients enrolled in a clinical study. The process is considered to be informative (non-ignorable) if the likelihood function for the model cannot be partitioned into a set...

  • Feature Paper
  • Article
  • Open Access
234 Views
14 Pages

Assessing Dominance in Survival Functions: A Test for Right-Censored Data

  • Félix Belzunce,
  • Carolina Martínez-Riquelme and
  • Jaime Valenciano

27 December 2025

This paper proposes a new statistical test to assess the dominance of survival functions in the presence of right-censored data. Traditional methods, such as the Log-Rank test, are inadequate for determining whether one survival function consistently...

  • Article
  • Open Access
31 Citations
7,783 Views
15 Pages

Germination Data Analysis by Time-to-Event Approaches

  • Alessandro Romano and
  • Piergiorgio Stevanato

12 May 2020

Germination data are analyzed by several methods, which can be mainly classified as germination indexes and traditional regression techniques to fit non-linear parametric functions to the temporal sequence of cumulative germination. However, due to t...

  • Article
  • Open Access
3 Citations
2,457 Views
13 Pages

25 October 2023

The dominance of non- and semi-parametric methods in survival analysis is not without criticism. Several studies have highlighted the decrease in efficiency compared to parametric methods. We revisit the problem of Asymptotic Relative Efficiency (ARE...

  • Article
  • Open Access
319 Views
19 Pages

Real-World Evaluation of the HELPP Score and CALLY Index for Preoperative Prognostic Stratification in Resectable Pancreatic Ductal Adenocarcinoma

  • İlkay Çıtakkul,
  • Umut Kefeli,
  • Khatira Shukurova,
  • Zehra Aytin,
  • Yasemin Bakkal Temi,
  • Ece Baydar,
  • Kazım Uygun and
  • Devrim Çabuk

31 December 2025

Background/Objectives: Preoperative prognostic assessment is essential for optimizing treatment strategies in pancreatic ductal adenocarcinoma (PDAC). This study aimed to evaluate and compare the prognostic value of the Heidelberg Pancreatic Prognost...

  • Article
  • Open Access
15 Citations
9,812 Views
13 Pages

26 May 2020

Restricted Mean Survival Time ( R M S T ) experiences a renaissance and is advocated as a model-free, easy to interpret alternative to proportional hazards regression and hazard rates with implication in causal inference. Estimation of R M ...

  • Feature Paper
  • Article
  • Open Access
7 Citations
6,198 Views
19 Pages

A Bayesian Approach for Imputation of Censored Survival Data

  • Shirin Moghaddam,
  • John Newell and
  • John Hinde

26 January 2022

A common feature of much survival data is censoring due to incompletely observed lifetimes. Survival analysis methods and models have been designed to take account of this and provide appropriate relevant summaries, such as the Kaplan–Meier plot and...

  • Article
  • Open Access
3 Citations
1,757 Views
10 Pages

The Outcome after Endovascular and Open Repair of Abdominal Aortic Aneurysms—A Binational Study Conducted between 1998 and 2017

  • Riku Pirinen,
  • Matti T. Laine,
  • Kevin Mani,
  • Kim Gunnarsson,
  • Anders Wanhainen,
  • Reijo Sund and
  • Maarit Venermo

29 July 2024

Objective: We aimed to analyse patient outcomes following open (OAR) or endovascular repair (EVAR) of an abdominal aortic aneurysm (AAA) in Finland and Sweden from 1998 to 2017. Both intact and ruptured AAAs (rAAAs) were included in the analysis. Met...

  • Article
  • Open Access
23 Citations
3,719 Views
12 Pages

The Prognostic Effect of Multidisciplinary Team Intervention in Patients with Advanced Gastric Cancer

  • Yuan-Yuan Xiang,
  • Cun-Can Deng,
  • Han-Yuan Liu,
  • Zi-Chong Kuo,
  • Chang-Hua Zhang and
  • Yu-Long He

17 February 2022

Background: The effect of multidisciplinary team intervention (MDT) on the prognosis of advanced gastric cancer (GC) is still controversial. This study aims to analyze the effect of MDTs on the overall survival time of advanced gastric cancer patient...

  • Article
  • Open Access
3 Citations
2,073 Views
13 Pages

29 December 2022

Background: The main purpose of this study is to analyze the clinicopathological features and prognosis factors of bile duct and ampullary neuroendocrine neoplasms (NENs). Methods: The relevant data were collected from the SEER database from 1975 to...

  • Article
  • Open Access
2 Citations
1,476 Views
12 Pages

24 March 2025

Background and Objectives: Hypercapnic respiratory failure (HRF) is a critical clinical condition commonly encountered in acute exacerbations of chronic obstructive pulmonary disease (COPD), leading to high morbidity and mortality rates. The existing...

  • Article
  • Open Access
12 Citations
4,199 Views
11 Pages

Observational Study of Men and Women with Breast Cancer in Terms of Overall Survival

  • Vlad Bogdan Varzaru,
  • Diana-Maria Anastasiu-Popov,
  • Anca-Elena Eftenoiu,
  • Roxana Popescu,
  • Daliborca Cristina Vlad,
  • Cristian Sebastian Vlad,
  • Aurica Elisabeta Moatar,
  • Daniela Puscasiu and
  • Ionut Marcel Cobec

1 September 2024

Breast cancer is one of the most common cancers and the leading cause of cancer death in women. Less than 1% of breast cancer cases are male breast cancers. Although there has been significant progress made in the management of breast cancer, due to...

  • Article
  • Open Access
10 Citations
3,848 Views
13 Pages

Prediction of 177Lu-DOTATATE Therapy Outcomes in Neuroendocrine Tumor Patients Using Semi-Automatic Tumor Delineation on 68Ga-DOTATATE PET/CT

  • Hwan Lee,
  • Sarit T. Kipnis,
  • Remy Niman,
  • Sophia R. O’Brien,
  • Jennifer R. Eads,
  • Bryson W. Katona and
  • Daniel A. Pryma

31 December 2023

Background: Treatment of metastatic neuroendocrine tumors (NET) with 177Lu-DOTATATE peptide receptor radionuclide therapy (PRRT) results in favorable response only in a subset of patients. We investigated the prognostic value of quantitative pre-trea...

  • Article
  • Open Access
1 Citations
1,338 Views
14 Pages

22 April 2025

Background: Radical nephroureterectomy (RNU) is the standard treatment for upper tract urothelial carcinoma (UTUC). Minimally invasive techniques like robotic (RARNU) and laparoscopic (LRNU) RNU offer potential benefits over open surgery, but their c...

  • Article
  • Open Access
2 Citations
2,434 Views
7 Pages

13 May 2022

The aim of the present study was to evaluate in a clinical setting the bracket survival of lingual brackets bonded with the KommonBase system, and to compare it to the survival of a customized lingual bracket system. Two convenience samples of 13 con...

  • Article
  • Open Access
9 Citations
2,036 Views
14 Pages

The Naples Prognostic Score Is a Useful Tool to Assess Surgical Treatment in Non-Small Cell Lung Cancer

  • Stefano Elia,
  • Alexandro Patirelis,
  • Georgia Hardavella,
  • Antonella Santone,
  • Federica Carlea and
  • Eugenio Pompeo

12 December 2023

Different prognostic scores have been applied to identify patients with non-small cell lung cancer who have a higher probability of poor outcomes. In this study, we evaluated whether the Naples Prognostic Score, a novel index that considers both infl...

  • Article
  • Open Access
9 Citations
3,010 Views
11 Pages

The eighth TNM staging system proposal classifies lung cancer with partial or complete atelectasis/obstructive pneumonia into the T2 category. We aimed to develop nomograms to predict the possibility of lymph node metastasis (LNM) and the prognosis f...

  • Article
  • Open Access
6 Citations
3,334 Views
11 Pages

Expression of Membranous CD155 Is Associated with Aggressive Phenotypes and a Poor Prognosis in Patients with Bladder Cancer

  • Kohei Mori,
  • Kazumasa Matsumoto,
  • Noriyuki Amano,
  • Dai Koguchi,
  • Soichiro Shimura,
  • Masahiro Hagiwara,
  • Yuriko Shimizu,
  • Masaomi Ikeda,
  • Yuichi Sato and
  • Masatsugu Iwamura

19 March 2022

Objective: To investigate the relationship between clinicopathological findings and membranous CD155 (mCD155) or cytoplasmic CD155 (cCD155) expression in bladder cancer (BC). Methods: We retrospectively analyzed 103 patients with BC who underwent rad...

  • Article
  • Open Access
4 Citations
1,832 Views
19 Pages

10 September 2024

Upper tract urothelial carcinoma (UTUC) is a rare and aggressive malignancy with a poor prognosis. The accurate prediction of survival and recurrence in UTUC is crucial for effective risk stratification and guiding therapeutic decisions. Models combi...

  • Article
  • Open Access
4 Citations
3,193 Views
11 Pages

1 March 2023

In this study, we investigated the impact of uterine manipulation on endometrial cancer survival outcomes. We analyzed patients with endometrial cancer who underwent robot-assisted staging and open staging surgery between 2010 and 2020. Either uterin...

  • Article
  • Open Access
8 Citations
5,310 Views
10 Pages

21 June 2020

The long-term use of benzodiazepines is not recommended for the treatment of major depressive disorder (MDD) due to the risk of adverse effects, including dependence, falls, dementia, mortality and the lack of evidence of effectiveness for symptoms o...

  • Article
  • Open Access
24 Citations
1,046 Views
6 Pages

Impact of microsatellite instability on survival of endometrial cancer patients

  • Daiva Kanopienė,
  • Giedrė Smailytė,
  • Jolanta Vidugirienė and
  • Jeff Bacher

30 September 2014

Background and objective: Endometrial cancer (EC) is the most commonly diagnosed gynecologic malignancy among women worldwide and may be classified on the basis of different molecular, pathologic and genetic alterations, including microsatellite inst...

  • Article
  • Open Access
1 Citations
2,305 Views
14 Pages

The Influence of Mucinous Histology on the Prognosis of Stage II and III Colorectal Cancers

  • İsa Caner Aydin,
  • Mehmet Torun,
  • Mehmet Reşit Sönmez,
  • Serkan Ademoğlu,
  • Ahmet Orhan Sunar,
  • Orhan Uzun,
  • Selçuk Gülmez,
  • Erdal Polat and
  • Mustafa Duman

6 March 2025

Background and Objectives: Mucinous adenocarcinoma (MAC) and mucinous components (MCP) in colorectal cancers (CRC) have shown conflicting results regarding their prognostic impact. This study aims to evaluate survival differences between MAC, MCP, an...

  • Article
  • Open Access
3 Citations
2,285 Views
14 Pages

A Reduction of Calcineurin Inhibitors May Improve Survival in Patients with De Novo Colorectal Cancer after Liver Transplantation

  • Ramin Raul Ossami Saidy,
  • Elisa Wegener,
  • Deniz Uluk,
  • Luca Dittrich,
  • Wenzel Schöning,
  • Georg Lurje,
  • Robert Öllinger,
  • Dominik Paul Modest,
  • Frank Tacke and
  • Dennis Eurich
  • + 2 authors

29 November 2022

Background and Objectives: After liver transplantation (LT), long-term immunosuppression (IS) is essential. IS is associated with de novo malignancies, and the incidence of colorectal cancer (CRC) is increased in LT patients. We assessed course of di...

  • Article
  • Open Access
7 Citations
2,800 Views
13 Pages

Expression Status and Prognostic Value of m6A RNA Methylation Regulators in Lung Adenocarcinoma

  • Xiuhong Li,
  • Zian Feng,
  • Rui Wang,
  • Jie Hu,
  • Xiaodong He and
  • Zuojun Shen

26 June 2021

N6-methyladenosine (m6A) RNA modification is the most abundant modification method in mRNA, and it plays an important role in the occurrence and development of many cancers. This paper mainly discusses the role of m6A RNA methylation regulators in lu...

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