Showing 661 - 680 results of 18,849 for search 'sample random sampling', query time: 0.21s Refine Results
  1. 661

    LINE-1 hypomethylation in blood and tissue samples as an epigenetic marker for cancer risk: a systematic review and meta-analysis. by Martina Barchitta, Annalisa Quattrocchi, Andrea Maugeri, Manlio Vinciguerra, Antonella Agodi

    Published 2014-01-01
    “…Furthermore, subgroup analyses were conducted by sample type (tissue or blood samples), cancer types, and by assays used to measure global DNA methylation levels. …”
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    Article
  2. 662

    Associations of cardiovascular diseases and type 2 diabetes with ophthalmic diseases in a population sample over 55 years old by A. O. Direev, I. V. Munts, E. S. Mazurenko, M. Yu. Shapkina, A. N. Ryabikov, M. Bobak, S. K. Malyutina

    Published 2021-11-01
    “…To study associations of cardiovascular diseases and type 2 diabetes (T2D) with ophthalmic diseases in a population sample of men and women from middle to old age (Novosibirsk).Material and methods. …”
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    Article
  3. 663

    Prevalence of Staphylococcus aureus Isolated from Clinical Samples that Exhibits Inducible Clindamycin Resistance: A Cross-sectional Study by Akansha Goyal, Akansha Arya, Kajal Rajput, Sapna Chauhan

    Published 2025-04-01
    “…A total of 100 isolates of S. aureus obtained from various clinical samples were included. Simple random sampling was employed to ensure an unbiased selection of isolates. …”
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  4. 664

    Associations of increased spatial QRS-T angle with cardiovascular risk factors: data from the regional sample of ESSE-RF study by G. A. Muromtseva, E. A.-I. Aidu, Yu. K. Makarova, V. A. Kutsenko, E. B. Yarovaya, V. G. Trunov, Yu. A. Balanova, A. V. Kapustina, S. E. Evstifeeva, A. Yu. Efanov, S. A. Shalnova, O. M. Drapkina

    Published 2021-09-01
    “…We analyzed 1411 electrocardiography (ECG) records of men and women aged 25-64 years from a random regional sample of the Epidemiology of Cardiovascular Diseases and their Risk Factors in Regions of Russian Federation (ESSE-RF) study. …”
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  5. 665

    Exploratory integration of near-infrared spectroscopy with clinical data: a machine learning approach for HCV detection in serum samples by Eloy Pérez-Gómez, José Gómez, José Gómez, Jennifer Gonzalo, Sergio Salgüero, Daniel Riado, María Luisa Casas, María Luisa Gutiérrez, Elena Jaime, Enrique Pérez-Martínez, Rafael García-Carretero, Javier Ramos, Conrado Fernández-Rodríguez, Conrado Fernández-Rodríguez, Myriam Catalá, Myriam Catalá, Luca Martino, Óscar Barquero-Pérez

    Published 2025-06-01
    “…We applied L1-regularized Logistic Regression (L1-LR) to identify the most informative wavelengths for HCV detection within the 1,000–2,500 nm range, and then integrated these spectral features with routine clinical markers using a Random Forest (RF) model. Our dataset comprised 137 serum samples from 38 patients, each represented by a NIRS spectrum and clinical data from blood tests.ResultsAfter preprocessing with Standard Normal Variate (SNV) correction and downsampling, the best-performing RF model, which combined NIRS features and clinical data, achieved an accuracy of 72.2% and an AUC-ROC of 0.850, outperforming models using only clinical or spectral data. …”
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  6. 666
  7. 667

    Academic problems facing a sample of female students of theoretical colleges at King Abdulaziz University from their point of view by Jowana Abdullah Aljehani, Zaynah Ahmad alzahrani, Wejdan abdulrahman algarni, Maryam Ibrahim Ghabban

    Published 2024-09-01
    “…The descriptive method was used, and the study sample consisted of (277) female theoretical college students from the following levels (third - fourth - fifth - sixth) at King Abdulaziz University, and they were randomly chosen. …”
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  8. 668

    STRAIN LOCALIZATION PECULIARITIES AND DISTRIBUTION OF ACOUSTIC EMISSION SOURCES IN ROCK SAMPLES TESTED BY UNIAXIAL COMPRESSION AND EXPOSED TO ELECTRIC PULSES by V. A. Mubassarova, L. M. Bogomolov, A. S. Zakupin, I. A. Panteleev, O. B. Naimark

    Published 2015-09-01
    “…Parameters may be arbitrarily modified within a small range, and randomization is thus another common statistical significance criterion for sample sets obtained at the same conditions. …”
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  9. 669

    A kind mind: effects of compassion-based meditation on prosocial intergroup outcomes in a South African pilot sample by Adala M. Prevost, Michal George, Melike M. Fourie

    Published 2025-07-01
    “…Future directions include a randomized controlled trial in an appropriately powered sample, and expansion of the methodology to include other social groups.…”
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  10. 670

    Pneumococcal carriage in a large Sicilian sample population: impact on the current epidemiological scenario and implications for future vaccination strategies by Emanuele Amodio, Fabio Tramuto, Fabio Tramuto, Valerio De Francisci, Dario Genovese, Valeria Guzzetta, Vincenzo Pisciotta, Arianna Santino, Giulia Randazzo, Giulio Trapani, Giuseppe Vella, Francesco Vitale, Francesco Vitale

    Published 2024-12-01
    “…This study aimed to determine the prevalence of nasopharyngeal colonization and serotype distribution in the Sicilian population.MethodsObservational study randomly selecting samples belonging to Sicilian individuals whose nasopharyngeal swabs were collected between February 1, 2020, and December 31, 2022. …”
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  11. 671

    Abstract 060: Endovascular Thrombectomy for Posterior Cerebral Artery in the National Inpatient Sample (EaT PeCAN pIeS) by Aaron B Brake, Lane T Fry, Cody E Heskett, Abdul‐Rahman S Alkiswani, Gabriel T LeBeau, Frank De Stefano, Catherine M Lei, Kevin C Le, Adam D Rouse, Jeremy A Peterson, Koji Ebersole

    Published 2023-11-01
    “…Current guidance regarding endovascular thrombectomy (EVT) for PCA occlusion is insufficient as no randomized trials exist. Methods A real‐world retrospective National Inpatient Sample database analysis compared medical management (MM) versus EVT for PCA strokes. …”
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  17. 677

    慢性肾病与卒中的因果关系:一项两样本双向孟德尔随机化研究Causality between Chronic Kidney Disease and Stroke: A Two-Sample Bidirectional Mendelian Randomization Study by 宋金云,赵宏宇 (SONG Jinyun, ZHAO Hongyu )

    Published 2024-12-01
    “…Abstract: Objective Two-sample bidirectional Mendelian randomization (MR) method was used to analyze the causality between chronic kidney disease (CKD) and stroke. …”
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  18. 678

    Development and validation of a small-sample machine learning model to predict 5–year overall survival in patients with hepatocellular carcinoma by Tingting Jiang, Xingyu Liu, Wencan He, Hepei Li, Xiang Yan, Qian Yu, Shanjun Mao

    Published 2025-07-01
    “…To address the substantial time and resource demands associated with HCC prognostic prediction, we extract meaningful insights from limited small-sample data to develop and validate a prediction model for HCC 5-year overall survival (OS) by machine learning (ML). …”
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  19. 679

    Boosting Deep Reinforcement Learning with Semantic Knowledge for Robotic Manipulators by Lucía Güitta-López, Vincenzo Suriani, Jaime Boal, Álvaro J. López-López, Daniele Nardi

    Published 2025-06-01
    “…These results highlight the potential of semantic knowledge to reduce sample complexity and improve the effectiveness of DRL in robotic applications.…”
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  20. 680

    Application of image guided analyses to monitor fecal microbial composition and diversity in a human cohort by Konstantina Zafeiropoulou, Bas Voermans, Huy Ngo, Javier Moreno, Donghyeok Lee, Joep P. M. Derikx, Misha Luyer, Aeilko H. Zwinderman, Max Nieuwdorp, Marcus de Goffau, Wouter J. de Jonge, Evgeni Levin

    Published 2025-07-01
    “…A subset of human fecal samples was randomly retrieved from the second wave of data collection in the Healthy Life in an Urban Setting (HELIUS) study cohort. …”
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