Showing 1,121 - 1,140 results of 18,849 for search 'sample random sampling', query time: 0.20s Refine Results
  1. 1121

    Random splicing assisted deep learning for breast cancer cell line classification via Raman spectroscopy by Yiheng Liu, Junfeng Liu, Jiayi Wan, Hongke Hao, Guangxing Liu, Xia Huang

    Published 2025-01-01
    “…These findings establish RS-CNN as a robust analytical model for clinical Raman diagnostics, particularly valuable in applications requiring high accuracy with limited samples.…”
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  2. 1122

    Early prediction of preeclampsia from clinical, multi-omics and laboratory data using random forest model by Qiang Zhao, Jia Li, Zhuo Diao, Xiao Zhang, Suihua Feng, Guixue Hou, Wenqiu Xu, Zhiguang Zhao, Zhixu Qiu, Wenzhi Yang, Si Zhou, Peirun Tian, Qun Zhang, Weiping Chen, Huahua Li, Gefei Xiao, Jie Qin, Liqing Hu, Zhongzhe Li, Liang Lin, Shunyao Wang, Ruyun Gao, Wuyan Huang, Xiaohong Ruan, Sufen Zhang, Jianguo Zhang, Lijian Zhao, Rui Zhang

    Published 2025-05-01
    “…Objectives In this study, we aimed to develop prediction models for early-onset preeclampsia (EPE) and late-onset preeclampsia (LPE) respectively using clinical data, metabolome and proteome analyses on plasma samples and laboratory data. Methods We retrospectively recruited 56 EPE, 50 LPE patients and 92 normotensive controls from three tertiary hospitals and used clinical and laboratory data in early pregnancy. …”
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  3. 1123
  4. 1124

    Mendelian randomization study showed no causality between metformin treatment and polycystic ovary syndrome. by Liting Lin, Huan Shen, Yanbin Wang

    Published 2025-01-01
    “…To investigate whether the association reflect causality, a two-sample Mendelian randomization (MR) method was conducted.…”
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  5. 1125

    On the effect of flexible adjustment of the p value significance threshold on the reproducibility of randomized clinical trials. by Farrokh Habibzadeh

    Published 2025-01-01
    “…Using a Monte Carlo simulation, the false-positive rate (when the null hypothesis was true) and false-negative rate (when the alternative hypothesis was true) were calculated in a hypothetical randomized clinical trial.<h4>Results</h4>Increasing the study sample size was associated with a reduction in the false-negative rate, however, the false-positive rate occurred at a fixed value regardless of the sample size when fixed significance thresholds were used; the rate decreased, however, when the flexible threshold was employed. …”
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  6. 1126

    Personalizing mHealth Interventions for Occupational Stress: Protocol for a Randomized Pilot Study by Beatrix Kunas, Oliver Jung, Christoph Schranz, Mathias Schmoigl-Tonis, Manuela Ploessnig, Anton-Rupert Laireiter

    Published 2025-06-01
    “…In the second phase of the study, the sample was divided into 2 groups, varying the degree of personalization of the app. …”
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  7. 1127

    Effects of Aquatic Exercise in Older People with Osteoarthritis: Systematic Review of Randomized Controlled Trials by Carlos Ayán-Pérez, Daniel González-Devesa, Beatriz Montero-García, Silvia Varela

    Published 2025-01-01
    “…<b>Results:</b> A total of 12 studies were included, with sample sizes ranging from 35 to 312 participants. …”
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  8. 1128

    Causal relationship between inflammatory bowel disease and sex: a Mendelian randomization study by Kaiwen Wang, Yu Lou, Shunjie Tian, Zhihui Tao, Zhihui Tao

    Published 2025-01-01
    “…ObjectiveThe aim of this study was to investigate the bidirectional causal relationship between sex hormones and IBD through a two-sample bidirectional Mendelian randomization (MR) study.MethodsBased on Genome-Wide Association Study (GWAS) pooled data on SHBG, total testosterone, bioavailable testosterone, estradiol, and IBD in a European population, we performed two-sample bidirectional MR analyses using single nucleotide polymorphisms (SNPs) as instrumental variables. …”
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  9. 1129

    Causality of genetically predicted solid cancers on risk of sepsis: insights from Mendelian randomization by Linjie Qiu, Shiyu Chen, Jia Zhong, Yan Zhang, Kai Zhang

    Published 2025-06-01
    “…The primary objective of this study is to explore this connection further, investigating the causal effect of solid cancer on sepsis by applying Mendelian randomization (MR). Methods Using genome-wide association study (GWAS) data from the Medical Research Council-Integrative Epidemiology Unit database, we conducted a bidirectional two-sample Mendelian randomization (MR) analysis to test the causal association between solid cancers (10 GWAS, 1,345,730 samples) and sepsis (2 GWAS, 1,288,566 samples) in European ancestry. …”
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  10. 1130

    Identification of Potential Drug Targets for Immunoglobulin A Nephropathy: A Mendelian Randomization Study by Limei Xiong, Hui Zhang, Yannan Guo, Yuhong Tao

    Published 2025-02-01
    “…<b>Methods</b>: We utilized summarized data from a recent genome-wide association study on IgAN, cis-expression quantitative trait loci data for druggable genes obtained from the eQTLGen Consortium, and DNA methylation quantitative trait loci data derived from the GoDMC database. Two-sample Mendelian randomization (MR) analysis, Bayesian colocalization, and mediation analysis through a two-step MR approach were performed to investigate their causal relationships. …”
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  11. 1131

    Effect of Educational Intervention on Fear of Falling in the Elderly People: A Randomized Cluster Trial by Nasim Alipour, Maryam Dastoorpour, Marzieh Araban

    Published 2020-09-01
    “…The samples were selected by multistage random sampling method and randomly assigned into intervention and control groups. …”
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  12. 1132

    Protective effect of antidiabetic drugs against male infertility: evidence from Mendelian randomization by Yuqi Li, Tao Zhou, Zhiyu Liu, Xinyao Zhu, Qilong Wu, Chunyang Meng, Qingfu Deng

    Published 2025-04-01
    “…Method We designed a comprehensive analytical workflow involving two-sample MR and summary-based MR (SMR) to assess the causal relationship between antidiabetic drug targets and MIF. …”
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  13. 1133

    Causal Relationships between Homocysteine and the Polycystic Ovary Syndrome: A Mendelian Randomization Analysis by Xianping Lin, Yaojuan Jin, Shihao Hong

    Published 2024-01-01
    “…We aimed to find the causal association of homocysteine (Hcy) with PCOS. Methods. A two-sample Mendelian randomization (MR) analysis was performed. …”
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  14. 1134

    Machine learning assisted adjustment boosts efficiency of exact inference in randomized controlled trials by Han Yu, Alan Hutson, Xiaoyi Ma

    Published 2025-07-01
    “…Abstract In this work, we proposed a novel inferential procedure assisted by machine learning based adjustment for randomized control trials. The method was developed under the Rosenbaum’s framework of exact tests in randomized experiments with covariate adjustments, replacing the traditional linear model with nonparametric models that capture the complex relationships between covariates and outcomes. …”
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  15. 1135

    Primary Aldosteronism and Risk of Cardiovascular Outcomes: Genome‐Wide Association and Mendelian Randomization Study by Kosuke Inoue, Tatsuhiko Naito, Ryosuke Fuji, Kyuto Sonehara, Kenichi Yamamoto, Ryuta Baba, Takaya Kodama, Yu Otagaki, Akira Okada, Kiyotaka Itcho, Kazuhiro Kobuke, Haruya Ohno, Takayuki Morisaki, Noboru Hattori, Atsushi Goto, Tetsuo Nishikawa, Kenji Oki, Yukinori Okada

    Published 2024-08-01
    “…The results were consistent among the European population. Conclusions Our 2‐sample Mendelian randomization study revealed that PA had increased risks of CAD, CHF, and stroke. …”
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  16. 1136

    Causal association of modifiable factors with cardiometabolic multimorbidity: an exposome-wide Mendelian randomization investigation by Dun Li, Jing Lin, Hongxi Yang, Lihui Zhou, Yujian Li, Zhe Xu, Li Sun, Xinyu Zhang, Weili Xu, Yaogang Wang

    Published 2025-06-01
    “…Methods In this study, a three-stage design Mendelian randomization (MR) investigation was conducted, using two-sample MR with potential sample overlap correction and multiple testing, multivariable MR analysis, and multi-response MR, with modifiable factors covering domains of socioeconomic factors, behavioral factors, biochemical factors, and physical measures as exposures, and CMM and CMDs as outcomes. …”
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  17. 1137

    Little evidence for an effect of smoking on multiple sclerosis risk: A Mendelian Randomization study. by Ruth E Mitchell, Kirsty Bates, Robyn E Wootton, Adil Harroud, J Brent Richards, George Davey Smith, Marcus R Munafò

    Published 2020-11-01
    “…Smoking has been associated with MS in observational studies and is often thought of as an environmental risk factor. We used two-sample Mendelian randomization (MR) to examine whether this association is causal using genetic variants identified in genome-wide association studies (GWASs) as associated with smoking. …”
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  18. 1138

    Woolf et al’s “GWAS by subtraction” is not useful for cross-generational Mendelian randomization studies by David M Evans, George Davey Smith, Gunn-Helen Moen

    Published 2025-06-01
    “…Abstract Mendelian randomization (MR) is an epidemiological method that can be used to strengthen causal inference regarding the relationship between a modifiable environmental exposure and a medically relevant trait and to estimate the magnitude of this relationship [1]. …”
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  19. 1139

    Improving a novel quantitative randomized response method using auxiliary variable information by Hamed Salemian, Eisa Mahmoudi, Osama Abdulaziz Alamri, Javid Shabbir

    Published 2024-11-01
    “…In the majority of sample surveys, the variable of interest might have sensitive characteristics. …”
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  20. 1140

    The effect of evaluator presence in simulated scenarios on basic life support: a randomized study by Ana Carolina Carraro Tony, Marcos Paulo Schlinz e Silva, André Luiz Silva Alvim, Luciane Ribeiro, Roberta Teixeira Prado, Ricardo Bezerra Cavalcante, Angélica da Conceição Oliveira Coelho, Fábio da Costa Carbogim

    Published 2025-08-01
    “…Seventy-three fourth-year students were included, with five student losses during the study. The initial sample consisted of 68 students, randomized into a control group (n=33) and an experimental group (n=35). …”
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