Titre : Groupes témoins

Groupes témoins : Questions médicales fréquentes

Termes MeSH sélectionnés :

Reference Values
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groupe témoin est constitué de participants similaires au groupe traité, mais sans intervention." } }, { "@type": "Question", "name": "Quel est le rôle d'un groupe témoin ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Il permet d'évaluer l'effet d'un traitement en comparant les résultats avec ceux du groupe traité." } }, { "@type": "Question", "name": "Comment choisir un groupe témoin ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Le choix doit se baser sur des critères d'inclusion similaires à ceux du groupe traité." } }, { "@type": "Question", "name": "Les groupes témoins sont-ils toujours nécessaires ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Oui, ils sont essentiels pour établir des comparaisons valides dans les études cliniques." } }, { "@type": "Question", "name": "Les groupes témoins montrent-ils des symptômes ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Non, ils ne reçoivent pas de traitement, donc ils ne présentent pas de symptômes liés au traitement." } }, { "@type": "Question", "name": "Comment les symptômes sont-ils évalués ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes sont évalués par des questionnaires ou des examens cliniques dans les deux groupes." } }, { "@type": "Question", "name": "Les groupes témoins aident-ils à la prévention ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Oui, ils permettent d'évaluer l'efficacité des interventions préventives par comparaison." } }, { "@type": "Question", "name": "Comment les groupes témoins influencent-ils la prévention ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Ils fournissent des données sur l'impact des mesures préventives en comparaison avec l'absence d'intervention." } }, { "@type": "Question", "name": "Quel type de traitement est comparé ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Le traitement expérimental est comparé à un placebo ou à un traitement standard dans le groupe témoin." } }, { "@type": "Question", "name": "Comment les résultats sont-ils mesurés ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Les résultats sont mesurés par des critères prédéfinis, comme l'amélioration des symptômes." } }, { "@type": "Question", "name": "Les complications sont-elles observées dans les groupes témoins ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Les complications peuvent être observées, mais elles ne sont pas dues au traitement expérimental." } }, { "@type": "Question", "name": "Comment les complications sont-elles analysées ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Elles sont analysées en comparant leur fréquence entre le groupe témoin et le groupe traité." } }, { "@type": "Question", "name": "Les groupes témoins aident-ils à identifier des facteurs de risque ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Oui, ils permettent de comparer les facteurs de risque entre les groupes traité et témoin." } }, { "@type": "Question", "name": "Comment les facteurs de risque sont-ils évalués ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Ils sont évalués par des questionnaires et des analyses statistiques dans les deux groupes." } } ] } ] }

Sources (10000 au total)

The correlates and reference values for the 6-minute walk distance in Taiwanese adults with schizophrenia.

The study aimed to identify the factors associated with the 6-min walk distance (6MWD) and to provide reference values for the 6MWD in individuals with schizophrenia (SCZ) in Taiwan.... A proportional stratified sampling method was utilized based on distribution of gender, age and body mass index (BMI) at the study hospital. The 6-minute walk test was conducted according to the Ameri... A total of 237 patients with SCZ completed the 6-minute walk test. The 6MWD was significantly associated with age, height, weight, and length of the onset of SCZ. Stepwise linear regression revealed t... Height and age were the main predictors for 6MWD among people with SCZ in Taiwan. The established reference values can be used to identify those at risk of poor cardiorespiratory fitness and as a targ...

Reference values for 4D flow magnetic resonance imaging of the portal venous system.

The purpose of this work was to establish normal reference values for 4D flow MRI-derived flow, velocity, and vessel diameters, and to define characteristic flow patterns in the portal venous system o... For this retrospective study, we screened all available 4D flow MRI exams of the upper abdomen in healthy adults acquired at our institution between 2012 and 2022 at either 1.5 T or 3.0 T MRI after ≥ ... We included 44 healthy subjects (26 female, 18-74 years) in the analysis. We report reference values for mean and peak flow, mean velocity, and vessel diameter in the healthy portal vein using 4D flow... We have reported normal hemodynamic values that are necessary baseline data for emerging clinical applications of 4D flow MRI in the portal venous system. Results are consistent with previously publis...

Evaluation of Standard and Proposed Reference Values for Entheseal Thickening by Using Musculoskeletal Ultrasound.

Ultrasound (US) is increasingly used to evaluate enthesitis. One of the US features of enthesitis is thickening. However, there is no consensus on how the entheseal thickening needs to be defined, and... Eighty HCs and 100 patients with axSpA had US scans of 2160 entheses. Sensitivity, specificity, odds ratio (OR), and accuracy were calculated according to accepted cut-off levels from the literature a... Thickening according to current cut-off levels was found in 20.4% (196/960) of healthy participants' entheses and 33% (396/1200) of entheses of patients with axSpA. Thickening according to proposed cu... Although using cut-offs appears to be an appealing method to evaluate entheseal thickness, the measurements may be affected by several confounding factors, leading to a low discriminative value, excep...

Sonographic reference values of cranial nerve size: A systematic review and meta-analysis.

Ultrasonography of the cranial nerves has recently gained attention for assessment of inflammatory, compressive, or degenerative neuropathies. However, sonographic reference values of cranial nerves h... By searching Medline (via PubMed), Scopus, Embase, Cochrane Central Register of Controlled Trials (CENTRAL), and Web of Science, we conducted a systematic review and meta-analysis of studies that repo... Fourteen studies with a total of 661 participants and 1437 ultrasound nerve measurements met the inclusion criteria. The anatomical sites for each nerve were combined to provide single-nerve mean meas... This meta-analysis provides reference values for the diameter and cross-sectional area of the facial, spinal accessory, and hypoglossal nerves at different sites, which can be used as guidance in clin...

Knee injury and osteoarthritis outcome score (KOOS) - National record-based reference values.

Knee Injury and Osteoarthritis Outcome Score (KOOS) and the short form KOOS-12 are commonly used in clinical practice and research but there are no national record-based reference values to aid interp... A national record-based representative sample of 9996 adult citizens were derived from the Danish Civil Registration System. The selection of citizens was based on seven predefined age groups with an ... A total of 2842 participants completed the KOOS, 1463 women (51.4%) and 1379 men (48.6%). The mean KOOS subscale scores were: pain 85.3 (95% confidence interval (CI): 84.6-85.9), symptoms 85.1 (95% CI... KOOS and KOOS-12 reference values can, in most situations, be used without stratification for age and sex. Sport/recreation reference values stratified for age and BMI may be of importance....

Blood routine reference value range should be adjusted according to regional and ethnic characteristics.

To further understand the influence of regional and ethnic factors on blood routine indicators.... The routine blood test (RBT) results of 617 healthy men aged 18-45 years old of the Li, Tibet, and Han nationalities living in the city of Sanya, Hainan Province (200 m), the city of Xining, Qinghai P... With an increase in altitude, the RBT index values and change trends of the different ethnic groups were different. When the altitude increased by 2,000 m, the RBC and Hb increased by 6.6 and 8.1%, re... Regional and ethnic factors have a significant impact on the RBT, and the current range of normal values of the RBT in China needs to be revised and adjusted....

An initial set of reference values for the Balance Tracking System (BTrackS) Limits of Stability protocol.

The Balance Tracking System (BTrackS) Limits of Stability (LOS) protocol is a relatively new means of evaluating unconstrained dynamic postural control ability. While the reliability of this protocol ... What are typical reference values for the BTrackS LOS protocol with respect to sex, height, and BMI?... A cross= -section of 800 healthy, young adults (aged 18-29 years; 368 men, 432 women) were administered the BTrackS LOS protocol. Sex, height and weight variables were also captured for the participan... Results of a stepwise linear regression showed that the outcome measure for BTrackS LOS testing (i.e. LOS Area) was larger in taller individuals and in men. Based on these findings, four percentile ra... The reference values provided by this study offer much needed guidance to clinicians and researchers for the determination of dynamic balance abnormalities based on BTrackS LOS testing....