Results 71 to 80 of about 160,344 (293)

The significance of Sampling Design on Inference: An Analysis of Binary Outcome Model of Children’s Schooling Using Indonesian Large Multi-stage Sampling Data [PDF]

This paper aims to exercise a rather recent trend in applied microeconometrics, namely the effect of sampling design on statistical inference, especially on binary outcome model.
Ekki Syamsulhakim
core  

Stratified Sampling of Neighborhood Sections for Population Estimation: A Case Study of Bo City, Sierra Leone.

PLoS ONE, 2015
There is a need for better estimators of population size in places that have undergone rapid growth and where collection of census data is difficult. We explored simulated estimates of urban population based on survey data from Bo, Sierra Leone, using ...
Roger Hillson, Joel D Alejandre, Kathryn H Jacobsen, Rashid Ansumana, Alfred S Bockarie, Umaru Bangura, Joseph M Lamin, David A Stenger   +7 more
doaj   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

Molecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang, Ayesha Alvero, Yi Qin, Mingjin Wang, Alexandra Fox, Yanfeng Li, Michael Millman, Amy Kemper, Gil Mor, Xian Shuang Liu, Michael Chopp, Zheng Gang Zhang, Yi Zhang   +12 more
wiley   +1 more source

Cluster sample inference using sensitivity analysis: the case with few groups [PDF]

This paper re-examines inference for cluster samples. Sensitivity analysis is proposed as a new method to perform inference when the number of groups is small.
Vikström, Johan
core  

Optimal regression estimator for stratified two-stage sampling

, 2014
Regression estimators are often used in survey sampling for point estimation. We propose a new regression estimator based upon the optimal estimator proposed by Berger et al., (2003).
Yves G. Berger, Berger, Yves G., Nangsue, Nuanpan, Nuanpan Nangsue   +3 more
core   +1 more source

二階段分層叢集抽樣的設計效應估計：以TIMSS 2007調查研究為例 An Estimation of the Design Effect for the Two-Stage Stratified Cluster Sampling Desig

Journal of Research in Education Sciences, 2011
大型調查研究常採用多階段分層叢集抽樣，檢視臺灣學生歷年來參與TIMSS 研究的結果顯示，其平均表現之標準誤常較他國稍大。應TIMSS 專責抽樣之單位要求，本研究旨在推導設計二階段分層叢集抽樣時即可預估標準誤的公式，以利選擇較佳分層架構，達減少標準誤的目標，並進行三個分析檢查其有效性。分析一將30 個參與TIMSS 2007 的國家資料，用該公式與《TIMSS 技術手冊》建議之刀切重複取樣法，分別估算各國學生平均科學成績之標準誤，發現兩者之線性相關達 .98。分析二以29 個連續參加TIMSS ...
任宗浩 Tsung-Hau Jen, 譚克平 Hak-Ping Tam, 張立民 Margaret Wu   +2 more
doaj   +1 more source

Interrogating the immune landscape of microsatellite stable RAS‐mutated colon cancer

Molecular Oncology, EarlyView.
COLOSSUS project RAS‐mutated MSS colon cancer study explored transcriptomics and immune cell density by immunohistochemistry (IHC), Immunoscore (IS), ISIC/TuLIS scores, mutation counts, and detected different prevalences but similar microenvironment composition across immune markers with clinical relevance for future immunotherapy combination ...
Rodrigo Dienstmann, Eduardo García‐Galea, Alice O'Farrell, Zak Kinsella, Maxime Meylan, Florent Petitprez, Ingrid Arijs, Tom Venken, Hari Ps, Adrian Lärkeryd, Ian Miller, Janick Selves, Nadja Meindl‐Beinker, Fiorella Ruiz‐Pace, Elena Élez, Raquel Comas‐Navarro, Frank Lincoln, Dirk Fey, Gift Nyamundanda, Aoife Nolan, Joern Lewin, Raquel Perez‐Lopez, Jonathan Briody, Kathleen Bennett, Walter Kolch, David Matallanas, Alexander Kel, Enrique Arenas, Joaquín Arribas, Bart Ghesquière, Josep Tabernero, Julie Meilleroux, Deborah McNamara, Ray McDermott, Marvin Lim, Mary O'Reilly, Brian Bird, Lisa Stack, Lucia Moloney, Patrick Morris, Keith Egan, Maciej Milewski, Lars Scheuer, Joachim Behringer, Georg Bolz, Ramon Salazar, Cristina Santos, Andrea Ruiz, Orla Casey, Verena Murphy, Matthias Ebert, Livio Trusolino, Diether Lambrechts, Anguraj Sadanandam, Catherine Sautès‐Fridman, Jochen Prehn, Paolo Nuciforo, Jacques Fieschi, Florence Monville, Darran O'Connor, Wolf Fridman, Annette Byrne   +61 more
wiley   +1 more source

Estimator Comparison for the Prediction of Election Results

Stats
Cluster randomized experiments and estimator comparisons are well-documented topics. In this paper, using the datasets of the popular vote in the presidential elections of the United States of America (2012, 2016, 2020), we evaluate the properties (SE ...
Miltiadis S. Chalikias, Georgios X. Papageorgiou, Dimitrios P. Zarogiannis   +2 more
doaj   +1 more source

Evaluation of Competitive Strategies and Organizational Performance [PDF]

مطالعات مدیریت راهبردی, 2014
An understanding of a competitive strategy and organizational performance can help managers identify decision making processes. Attempts to find the most appropriate strategies for the company which has a better performance.
Mohammad Lashkary, Abolfazl Samy, Zahra Ershadi   +2 more
doaj  

Model-Assisted Estimation of Population Mean in Two-Stage Cluster Sampling

Pakistan Journal of Statistics and Operation Research, 2017
Estimation of finite population parameters has been an area of concern to statisticians for decades. This paper presents an estimation of the population mean under a model-assisted approach. Dorfman (1992), Breidt and Opsomer (2000) and Ouma et al (2010) carried out the estimation of finite population total on the assumption that the sample size is ...
Bii, Nelson Kiprono, Onyango, Ouma Christopher   +1 more
openaire   +2 more sources