Titre : Études observationnelles comme sujet

Études observationnelles comme sujet : Questions médicales fréquentes

Termes MeSH sélectionnés :

Accelerometry
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des biais dans le diagnostic ?\nComment les études observationnelles évaluent-elles la précision des diagnostics ?", "url": "https://questionsmedicales.fr/mesh/D064887?mesh_terms=Accelerometry&page=3#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Études observationnelles comme sujet", "description": "Quels symptômes sont souvent observés dans les études ?\nComment les symptômes sont-ils mesurés dans ces études ?\nLes études observationnelles identifient-elles des symptômes nouveaux ?\nQuel est l'impact des symptômes sur la qualité de vie ?\nLes symptômes sont-ils toujours fiables dans les études ?", "url": "https://questionsmedicales.fr/mesh/D064887?mesh_terms=Accelerometry&page=3#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Études observationnelles comme sujet", "description": "Les études observationnelles aident-elles à identifier des stratégies de prévention ?\nQuels comportements sont souvent étudiés pour la prévention ?\nComment les résultats influencent-ils les politiques de santé ?\nLes études observationnelles mesurent-elles l'impact des programmes de prévention ?\nQuels sont les défis dans l'étude de la prévention ?", "url": "https://questionsmedicales.fr/mesh/D064887?mesh_terms=Accelerometry&page=3#section-prévention" }, { "@type": "MedicalWebPage", "name": "Traitements", "headline": "Traitements sur Études observationnelles comme sujet", "description": "Comment les études observationnelles évaluent-elles les traitements ?\nLes études observationnelles comparent-elles différents traitements ?\nQuels traitements sont souvent étudiés ?\nLes effets secondaires sont-ils documentés dans ces études ?\nComment les résultats des traitements sont-ils interprétés ?", "url": "https://questionsmedicales.fr/mesh/D064887?mesh_terms=Accelerometry&page=3#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Études observationnelles comme sujet", "description": "Les études observationnelles identifient-elles des complications ?\nComment les complications sont-elles mesurées ?\nLes complications sont-elles toujours prévisibles ?\nQuel est l'impact des complications sur le traitement ?\nLes études observationnelles aident-elles à comprendre les complications ?", "url": "https://questionsmedicales.fr/mesh/D064887?mesh_terms=Accelerometry&page=3#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Études observationnelles comme sujet", "description": "Quels facteurs de risque sont souvent étudiés ?\nComment les études observationnelles identifient-elles les facteurs de risque ?\nLes facteurs de risque sont-ils modifiables ?\nQuel est l'impact des facteurs de risque sur la santé ?\nLes études observationnelles peuvent-elles établir des liens de causalité ?", "url": "https://questionsmedicales.fr/mesh/D064887?mesh_terms=Accelerometry&page=3#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment les études observationnelles aident-elles au diagnostic ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Elles identifient des facteurs associés à des maladies, améliorant ainsi le diagnostic précoce." } }, { "@type": "Question", "name": "Quels types de diagnostics sont souvent étudiés ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Les maladies chroniques, les infections et les troubles mentaux sont fréquemment analysés." } }, { "@type": "Question", "name": "Les études observationnelles peuvent-elles remplacer des tests diagnostiques ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Non, elles complètent les tests mais ne les remplacent pas, car elles ne prouvent pas de causalité." } }, { "@type": "Question", "name": "Quel est le rôle des biais dans le diagnostic ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Les biais peuvent fausser les résultats, rendant le diagnostic moins fiable dans certaines études." } }, { "@type": "Question", "name": "Comment les études observationnelles évaluent-elles la précision des diagnostics ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Elles comparent les diagnostics cliniques avec des résultats de référence pour mesurer la précision." } }, { "@type": "Question", "name": "Quels symptômes sont souvent observés dans les études ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes varient selon les maladies, incluant douleur, fatigue et troubles cognitifs." } }, { "@type": "Question", "name": "Comment les symptômes sont-ils mesurés dans ces études ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Ils sont souvent évalués par des questionnaires standardisés ou des échelles de mesure." } }, { "@type": "Question", "name": "Les études observationnelles identifient-elles des symptômes nouveaux ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles peuvent révéler des symptômes non documentés ou mal compris dans certaines conditions." } }, { "@type": "Question", "name": "Quel est l'impact des symptômes sur la qualité de vie ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes peuvent significativement affecter la qualité de vie, limitant les activités quotidiennes." } }, { "@type": "Question", "name": "Les symptômes sont-ils toujours fiables dans les études ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Non, leur fiabilité peut être influencée par des biais de déclaration ou des facteurs contextuels." } }, { "@type": "Question", "name": "Les études observationnelles aident-elles à identifier des stratégies de prévention ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles identifient des facteurs de risque et des comportements protecteurs pour la santé." } }, { "@type": "Question", "name": "Quels comportements sont souvent étudiés pour la prévention ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "L'alimentation, l'exercice physique et le tabagisme sont fréquemment analysés." } }, { "@type": "Question", "name": "Comment les résultats influencent-ils les politiques de santé ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Les résultats peuvent guider les politiques de santé publique en matière de prévention des maladies." } }, { "@type": "Question", "name": "Les études observationnelles mesurent-elles l'impact des programmes de prévention ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles évaluent l'efficacité des programmes de prévention dans des populations spécifiques." } }, { "@type": "Question", "name": "Quels sont les défis dans l'étude de la prévention ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Les défis incluent le suivi à long terme et la variabilité des comportements individuels." } }, { "@type": "Question", "name": "Comment les études observationnelles évaluent-elles les traitements ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Elles analysent les résultats des traitements dans des populations réelles sans randomisation." } }, { "@type": "Question", "name": "Les études observationnelles comparent-elles différents traitements ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles peuvent comparer l'efficacité de plusieurs traitements dans des conditions réelles." } }, { "@type": "Question", "name": "Quels traitements sont souvent étudiés ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Les traitements médicamenteux, les interventions chirurgicales et les thérapies comportementales." } }, { "@type": "Question", "name": "Les effets secondaires sont-ils documentés dans ces études ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les études observationnelles rapportent souvent des effets secondaires observés chez les patients." } }, { "@type": "Question", "name": "Comment les résultats des traitements sont-ils interprétés ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Ils sont interprétés en tenant compte des biais potentiels et des facteurs de confusion." } }, { "@type": "Question", "name": "Les études observationnelles identifient-elles des complications ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles documentent les complications associées à des maladies ou traitements spécifiques." } }, { "@type": "Question", "name": "Comment les complications sont-elles mesurées ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Elles sont mesurées par des événements indésirables rapportés ou des critères cliniques définis." } }, { "@type": "Question", "name": "Les complications sont-elles toujours prévisibles ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Non, certaines complications peuvent survenir de manière inattendue, rendant leur prévision difficile." } }, { "@type": "Question", "name": "Quel est l'impact des complications sur le traitement ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Les complications peuvent nécessiter des ajustements de traitement ou des interventions supplémentaires." } }, { "@type": "Question", "name": "Les études observationnelles aident-elles à comprendre les complications ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Oui, elles fournissent des données sur la fréquence et les facteurs associés aux complications." } }, { "@type": "Question", "name": "Quels facteurs de risque sont souvent étudiés ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Les facteurs de risque incluent l'âge, le sexe, le mode de vie et les antécédents médicaux." } }, { "@type": "Question", "name": "Comment les études observationnelles identifient-elles les facteurs de risque ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Elles analysent les données de santé et les comportements des populations sur de longues périodes." } }, { "@type": "Question", "name": "Les facteurs de risque sont-ils modifiables ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Certains sont modifiables, comme le tabagisme et l'alimentation, tandis que d'autres ne le sont pas." } }, { "@type": "Question", "name": "Quel est l'impact des facteurs de risque sur la santé ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Ils augmentent la probabilité de développer des maladies, influençant la santé publique." } }, { "@type": "Question", "name": "Les études observationnelles peuvent-elles établir des liens de causalité ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Elles peuvent suggérer des associations, mais ne peuvent pas prouver la causalité directement." } } ] } ] }

Sources (711 au total)

Comparison of Accelerometry-Based Measures of Physical Activity: Retrospective Observational Data Analysis Study.

Given the evolution of processing and analysis methods for accelerometry data over the past decade, it is important to understand how newer summary measures of physical activity compare with establish... We aimed to compare objective measures of physical activity to increase the generalizability and translation of findings of studies that use accelerometry-based data.... High-resolution accelerometry data from the Baltimore Longitudinal Study on Aging were retrospectively analyzed. Data from 655 participants who used a wrist-worn ActiGraph GT9X device continuously for... Data were from a sample (N=655; male: n=298, 45.5%; female: n=357, 54.5%) with a mean age of 69.8 years (SD 14.2) and mean BMI of 27.3 kg/m2 (SD 5.0). The mean marginal participant-specific correlatio... The findings from this comparison of accelerometry-based measures of physical activity can be used by researchers and facilitate the extension of knowledge from existing literature by demonstrating th...

Composite activity type and stride-specific energy expenditure estimation model for thigh-worn accelerometry.

Accurately measuring energy expenditure during physical activity outside of the laboratory is challenging, especially on a large scale. Thigh-worn accelerometers have gained popularity due to the poss... We first trained a supervised deep learning activity classification model using pooled data from available adult accelerometer datasets. The composite energy expenditure model was then developed and v... The activity classification model showed an overall accuracy of 99.7% across all five activity types during validation. The composite model for estimating energy expenditure achieved a mean absolute p... The integration of thigh-worn accelerometers with machine learning models provides a highly accurate method for classifying physical activity types and estimating energy expenditure. Our novel composi...

Sedentary behaviors and physical activity of the working population measured by accelerometry: a systematic review and meta-analysis.

Too much sedentary behavior (SB) and too little physical activity (PA) place adult workers at risk for chronic illness. It remains unclear which occupations and subgroups within occupations have the h... A literature search of six databases was performed for relevant studies published through March 2023. Eligible studies were in English, targeted working populations, had a sample size > 75, and object... We found that 63% of the studies reported daily time spent in SB and in MVPA, but fewer reported LPA, moderate PA, and vigorous PA. The average time spent in SB was 553.34 min/day, in LPA was 299.77 m... More research is needed to explore SB and PA patterns within occupational subgroups. Additionally, it is important to explore work-related individual (e.g., job task), interpersonal (e.g., social supp...

Accelerometer-measured physical activity and postmenopausal breast cancer incidence in the Women's Health Accelerometry Collaboration.

Few studies have examined accelerometer-measured physical activity and incident breast cancer (BC). Thus, this study examined associations between accelerometer-measured vector magnitude counts per 15... The WHAC comprised 21,089 postmenopausal women (15,375 from the Women's Health Study [WHS]; 5714 from the Women's Health Initiative Objective Physical Activity and Cardiovascular Health Study [OPACH])... In covariate-adjusted models, the highest (vs. lowest) tertiles of VM/15s, TPA, LPA, and MVPA were associated with BC HRs of 0.80 (95% CI, 0.64-0.99), 0.84 (95% CI, 0.69-1.02), 0.89 (95% CI, 0.73-1.08... Greater levels of accelerometer-assessed PA were associated with lower BC risk. Associations varied by age and obesity and were not independent of BMI or physical function....

Use of accelerometry to investigate standing and dynamic body balance in people with cerebral palsy: A systematic review.

People with cerebral palsy (CP) often have difficulties related to maintaining body balance in their daily living activities. Accelerometers are low-cost wearable devices with potential use to objecti... What are the main characteristics and findings from protocols used in research aiming to investigate standing or dynamic body balance stability through trunk accelerometry in people with CP?... We searched in December 2021 seven databases, Pubmed, Embase, Cochrane, Science Direct, Scopus, PEDro, and Lilacs, with descriptors related to cerebral palsy, accelerometer, and balance.... Ten studies were included, with a total of 197 evaluated people with CP. These studies were classified as moderate or high methodological quality. We found convergence on the use of the sensor at the ... Trunk accelerometry in quiet posture and dynamic tasks was shown to be a valid and sensitive measurement to evaluate balance stability in children and adolescents with CP. It is a small, light, low-co...