Showing 261 - 280 results of 18,849 for search 'sample random sampling', query time: 0.21s Refine Results
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    Hilbert Convex Similarity for Highly Secure Random Distribution of Patient Privacy Steganography by Hussein K. Alzubaidy, Dhiah Al-Shammary, Mohammed Hamzah Alsalihi, Ayman Ibaida, Khandakar Ahmed

    Published 2023-01-01
    “…Based on Hilbert Random Secure Distribution, a novel data-hiding method for embedding secret information about the patient in a cover image MRI sample has been proposed. …”
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  4. 264

    Standardized quantification of pulmonary fibrosis in histological samples by Ralf-Harto Hübner, Wolfram Gitter, Nour Eddine El Mokhtari, Micaela Mathiak, Marcus Both, Hendrik Bolte, Sandra Freitag-Wolf, Burkhard Bewig

    Published 2008-04-01
    “…We modified the Ashcroft scale by precisely defining the assignment of grades from 0 to 8 for the increasing extent of fibrosis in lung histological samples. Thirty-two observers were randomly assigned to evaluate 108 photographs of slides using either the Ashcroft scale or the modified scale. …”
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  5. 265

    Immune Cell-Mediated Effect of Lipid Profile on Colorectal Cancer: A Two-Step, Two-Sample Mendelian Randomization Study by Wanli GONG, Yaqi HOU, Yue WANG, Yuan LI, Rongxuan QI, Qi YU, Juan ZHANG

    Published 2024-10-01
    “…ObjectiveTo elucidate the bidirectional causal relationship between lipid profiles and colorectal cancer (CRC) by using the two-sample and two-step Mendelian randomization (MR) methods, and to explore the mediating role and proportion of immune cells as intermediary factors. …”
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  6. 266

    Causal Link of Distinct Mental Disorders with Androgenetic Alopecia and Alopecia Areata: A Bidirectional Two-Sample Mendelian Randomization Study by Hu C, Cheng Z, Tao Y, Zhang L, Zhang Y, Chen Z

    Published 2025-07-01
    “…We aimed to investigate whether and in which direction there is a causal link of distinct mental disorders with androgenetic alopecia (AGA) and alopecia areata (AA) in European population.Methods: We performed a bidirectional two-sample Mendelian randomization (MR) study to test their causality using summary statistics. …”
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  7. 267

    Genetic Association Between Serum Calcium, Potassium Levels, and Rosacea: Evidence from a Two-Sample Mendelian Randomization Study by Zhang Y, Zhang X, Dong J, Liu F

    Published 2025-03-01
    “…This study aimed to explore the causality of associations between Calcium, Copper, Selenium, Zinc, Iron, Potassium and Magnesium with the risk of rosacea.Patients and Methods: This was a two-sample Mendelian Randomization (MR) study that used data from genome-wide association studies (GWAS) on serum levels of selected micronutrients as exposure and rosacea as the outcome. …”
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    Potential Causal Relationship Between Chronic Obstructive Pulmonary Disease and Diabetes: A Bidirectional Two-Sample Mendelian Randomization Study by Wang X, Chen X, Feng R, Jiang H, Liu W

    Published 2025-07-01
    “…However, their causal relationship still needs to be confirmed.Methods: We conducted a comprehensive bidirectional two-sample Mendelian randomization (MR) analysis to evaluate the causal links between COPD and both type 1 diabetes (T1D) and T2D by using genome-wide association study (GWAS) summary statistics in European and Asian populations. …”
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    Effectiveness of the acceptance and commitment therapy for resilience promotion in a non-clinical sample: A randomized controlled and a pilot study by Engin Büyüköksüz

    Published 2025-07-01
    “…However, given the small sample size and baseline differences between groups, these findings should be interpreted with caution and warrant further investigation with larger, more diverse populations.…”
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  12. 272

    Causal relationship between COVID-19, vaccination, and 20 digestive diseases: a comprehensive two-sample Mendelian randomization study by Xin Zeng, Xiang Li, Yansong Fu, Jie Chen, Keyi Yang, Hong Qin

    Published 2025-06-01
    “…In this study, we investigated the associations between multiple COVID−19 infection phenotypes, vaccination, and 20 common digestive diseases, and explored their causal relationships through extensive Mendelian randomization (MR) analysis. Methods For individuals of European descent, we conducted an extensive two-sample Mendelian randomization (MR) analysis using genome-wide association study (GWAS) data. …”
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  13. 273

    Association Between Gut Microbiota and Chronic Kidney Disease: A Two-Sample Mendelian Randomization Study in a Chinese Population by Wenjian Lin, Zixin Liang, Junxuan Fang, Yu Liu, Lei Lei, Jiawen Lin, Bin Xia, Zhihua Zheng, Jingqiu Yuan, Chun Tang

    Published 2025-06-01
    “…<b>Materials and Methods:</b> We conducted a two-sample Mendelian randomization (MR) study using summary statistics of 500 gut microbial features (9 phyla, 3 classes, 14 orders, 32 families, 95 genera, 248 species, and 99 gut metabolic modules (GMMs)) from the 4D-SZ (from Shenzhen, China) discovery cohort (n = 1539). …”
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  14. 274

    Causal effect of lipoprotein(a) level on chronic kidney disease of European ancestry: a two-sample Mendelian randomization study by Yunhui Zhu, Songzan Chen, Zhebin Chen, Yao Wang, Guosheng Fu, Wenbin Zhang

    Published 2024-12-01
    “…We designed the bidirectional two-sample Mendelian randomization (MR) analyses. The estimates were computed using inverse-variance weighted (IVW), simple median, weighted median, and maximum likelihood. …”
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    Causal relationship between molecular markers of biological aging and orthopedic diseases: A two-sample bidirectional Mendelian randomization study by Wei Yan, Yichen Zhao, Jiahui Zhang, Ping Jiang, Honghong Ma, Min Fang, Xiaobing Xi

    Published 2025-07-01
    “…Aims: This study aims to investigate the bidirectional causal relationship between molecular markers of biological aging age and orthopedic conditions. Methods: A two-sample Mendelian randomization (MR) analysis based on a genome-wide association study (GWAS) was conducted to explore these causal relationships. …”
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  18. 278

    A causal inference study exploring the impact of iron status on the risk of thyroid cancer based on two-sample mendelian randomization by Yihan Shi, Wenlian Zheng, Guanglun Yang, Hong Liu, Lei Xing

    Published 2025-04-01
    “…Method Utilizing iron status-related Single Nucleotide Polymorphisms as instrumental variables, the research analyzed summary data on iron status and thyroid cancer from Genome-Wide Association Studies following the Two-sample Mendelian randomization guidelines, primarily using the Inverse-variance weighted method, with Mendelian randomization-Egger method, weighted median method, simple mode, and weighted mode as supplementary analyses. …”
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    Genetic correlations and causal associations between BMI, HDL-C, and postoperative infections: a two-sample Mendelian randomization study by Tao Yang, Zhe Chen, Daiyin Cao, Wenliang Song, Jinlong Jiang, Xiaoxun Ma, Zhi Mao, Xiangdong Guan, Jianfeng Wu, Rui Shi, Xiang Si

    Published 2025-04-01
    “…In this Mendelian randomization (MR) study, we utilized genome-wide association study (GWAS) data from the Global Lipids Genetics Consortium and FinnGen database, treating lipids and BMI as exposures. …”
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