Cohort definition
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Cohort definition is a bottleneck for conducting clinical research and depends on subjective decisions by domain experts. Data-driven cohort definition is appealing but requires substantial knowledge of terminologies and clinical data models. Criteria2Query is a natural language interface that facilitates human-computer collaboration for cohort definition and execution using clinical databases.
12p visteverogers 24-06-2023 7 2 Download
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To study the effect on patient cohorts of mapping condition (diagnosis) codes from source billing vocabularies to a clinical vocabulary. It appears possible to map diagnoses from disparate vocabularies to a single clinical vocabulary and carry out research using a single set of definitions, thus improving efficiency and transportability of research.
8p visteverogers 24-06-2023 4 2 Download
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Defining patient-to-patient similarity is essential for the development of precision medicine in clinical care and research. Conceptually, the identification of similar patient cohorts appears straightforward; however, universally accepted definitions remain elusive.
5p vighostrider 25-05-2023 3 2 Download
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Extranodal extension (ENE) is a poor prognostic factor for oral squamous cell carcinoma (OSCC). Identifying ENE by clinical and/or radiological examination is difficult, thereby leading to unnecessary neck dissections. Currently, no definitive predictors are available for ENE.
14p vikolindagrabar 27-07-2022 5 1 Download
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The operational definition of sarcopenia has been updated (EWGSOP2) and apply different cut-of points compared to previous criteria (EWGSOP1). Therefore, we aim to compare the sarcopenia prevalence and the association with mortality and dependence in activities of daily living using the 2010 (EWGSOP1 and 2019 (EWGSOP2 operational definition, applying cut-ofs at two levels using T-scores.
12p vinobelprisen 26-03-2022 13 4 Download
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Total joint replacements (TJRs) should be considered as one of few definite endpoints in osteoarthritis research. We analyzed factors associated with late-life prevalence and risk factors for incidence of TJRs due to osteoarthritis in a population based cohort.
8p vioregon2711 22-02-2021 9 2 Download
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Overuse injuries (OI) are common in elite athletics. Previous studies have had athletes self-report injuries rather than having a medical professional provide a clear diagnosis. This might be a major reason for the inconsistencies in reported incident proportions of OI in elite athletics, in addition to the varying definitions of OI in current literature.
12p vitennessee2711 01-02-2021 9 2 Download
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To describe the scoring methodology and MRI assessments used to evaluate the cross-sectional features observed in cases and controls, to define change over time for different MRI features, and to report the extent of changes over a 24-month period in the Foundation for National Institutes of Health Osteoarthritis Biomarkers Consortium study nested within the larger Osteoarthritis Initiative (OAI) Study.
17p vitennessee2711 02-02-2021 12 1 Download
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Few longitudinal studies have described the variation in LBP and its impact over time at an individual level. The aims of this study were to: 1) determine the prevalence of LBP in three surveys over a 9-year period in the Danish general population, using five different definitions of LBP, 2) study their individual long-term courses, and 3) determine the odds of reporting subsequent LBP when having reported previous LBP.
9p vitennessee2711 02-02-2021 8 2 Download
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Lumbar disc degeneration seen on magnetic resonance imaging (MRI) is defined as loss of signal intensity and/or disc height, alone or in combination with other MRI findings. The MRI findings and thresholds used to define disc degeneration vary in the literature, and their associations with low back pain (LBP) remain uncertain.
11p vimariana2711 22-12-2020 9 0 Download
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Multiple definitions are used to investigate injuries in musicians, resulting in a wide range of prevalence rates. The aim of this study is to establish the impact of different injury definitions on the prevalence of injuries and disability in classical music students.
8p vimariana2711 22-12-2020 13 2 Download
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The role of remission status in limited disease (LD) small-cell lung cancer (SCLC) patients treated with definitive chemoradiotherapy (CRT) remains to be finally clarified. Individual data from 184 patients treated with definitive CRT concurrently or sequentially were retrospectively reviewed.
6p vinaypyidaw2711 26-08-2020 17 1 Download
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To assess the feasibility and potential impact on target delineation of respiratory-gated (4D) contrastenhanced 18Fluorine fluorodeoxyglucose (FDG) positron emission tomography - computed tomography (PET-CT), in the treatment planning position, for a prospective cohort of patients with lower third oesophageal cancer.
8p vimanama2711 30-07-2020 9 1 Download
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Maximum (MIP) and average intensity projection (AIP) CTs allow rapid definition of internal target volumes in a 4D-CT. The purpose of this study was to assess the accuracy of these techniques in a large patient cohort in combination with simulations on a lung phantom.
9p vimanila2711 29-06-2020 6 0 Download
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The success of the concert was clearly monumental – MTV donated millions of dollars’ worth of free airtime, and PSI was able to air PSAs across the globe that encouraged healthy behavior and empowerment. To many, Roberts and her team had opened the door for large-scale partnerships with alternative audiences for PSI; it was uncharted territory for the organization but proved to be successful in illuminating the YouthAIDS brand and PSI’s work. As YouthAIDS took off, it attracted donations from a wide variety of sources, large and small.
106p lenh_hoi_xung 21-02-2013 63 9 Download
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Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Differences in one-year health outcomes and resource utilization by definition of prolonged mechanical ventilation: a prospective cohort study...
11p coxanh_3 25-10-2011 45 3 Download