Études observationnelles comme sujet : Questions médicales fréquentes
Nom anglais: Observational Studies as Topic
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"description": "Comment les études observationnelles aident-elles au diagnostic ?\nQuels types de diagnostics sont souvent étudiés ?\nLes études observationnelles peuvent-elles remplacer des tests diagnostiques ?\nQuel est le rôle des biais dans le diagnostic ?\nComment les études observationnelles évaluent-elles la précision des diagnostics ?",
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"@type": "Question",
"name": "Comment les études observationnelles aident-elles au diagnostic ?",
"position": 1,
"acceptedAnswer": {
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"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."
}
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{
"@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."
}
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{
"@type": "Question",
"name": "Les symptômes sont-ils toujours fiables dans les études ?",
"position": 10,
"acceptedAnswer": {
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"text": "Non, leur fiabilité peut être influencée par des biais de déclaration ou des facteurs contextuels."
}
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{
"@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."
}
}
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Large-scale disease overarching longitudinal data are rare in the field of neuroimmunology. However, such data could aid early disease stratification, understanding disease etiology and ultimately imp...
BERLimmun is a single-center prospective observational study of planned 650 patients with neuroimmunological disease entity (e.g. but not confined to: multiple sclerosis, isolated syndromes, neuromyel...
The BERLimmun database allows to investigate multiple key aspects of neuroimmunological diseases, such as immunological differences between diagnoses or compared to healthy participants, interrelation...
Breast cancer (BC) is the leading cause of cancer in women, and has implications for sexual function (SF). In this study, we used an evidence map to identify, describe, and organise the current availa...
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Observational studies suggest asthma is a risk factor for coronary heart disease (CHD) and sex modifies the risk, but they may suffer from methodological limitations. To overcome these, we applied a "...
First, we conducted an observational study using UK medical records to match asthma patients 1:1, by age, sex and general practitioner (GP) practice, to the general population. We measured the associa...
In our observational study (n=1 522 910), we found asthma was associated with 6% increased risk of CHD (model 1: HR 1.06, 95% CI 1.01-1.13); after accounting for healthcare behaviour, we found no asso...
Our findings suggest that asthma is not a risk factor for CHD. Previous studies may have suffered from detection bias or residual confounding....
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This study aimed to investigate the variety of health care delivery challenges encountered in a virtual hospital and explore potential ways to improve the patient experience....
Focusing on acute respiratory, this protocol outlines a mixed methods study exploring the patient experience of a virtual hospital in Australia, Royal Prince Alfred Virtual Hospital (rpavirtual). We w...
Findings from this study will identify current barriers and facilitators to implementing virtual care, such as work-as-done versus work-as-imagined, equity of care, the role of carers, and patient saf...
This protocol outlines a mixed methods case study on the acute respiratory model of care from Australia's first virtual hospital, rpavirtual. This study will collect the experiences of patients, carer...
DERR1-10.2196/58683....
The utility of procalcitonin to identify obstetric sepsis is unknown....
To calculate the mean (range) procalcitonin in pregnancy among healthy women not in labor (group 1), healthy women in labor (group 2), and women with preterm prelabor rupture of membranes (PPROM) with...
NLM PubMed, Elsevier Embase, and Wiley Cochrane Central Register of Controlled Trials from inception to February 21, 2022....
Ten or more pregnant women with procalcitonin reported at more than 20 weeks of pregnancy, with information on labor, PPROM, and infection. Exclusions were major medical comorbidities....
Each abstract and full-text review was independently reviewed by the same two authors. Quality was reviewed using the Newcastle-Ottawa Scale. A meta-analysis was performed using a random effects model...
The systematic review included 25 studies: 10 (40%) of good quality and 15 (60%) of poor quality. The meta-analysis included 21 studies. Mean procalcitonin in group 1 was 0.092 ng/mL (range 0.036-0.04...
Among healthy pregnant women not in labor, procalcitonin levels are comparable to those in non-pregnant adults and may be useful in identifying infection. Procalcitonin levels in other groups overlap ...
CRD42020157376, registered 4/28/2020....
Major haemorrhage after injury is the leading cause of preventable death for trauma patients. Recent advancements in trauma care suggest damage control resuscitation (DCR) should start in the prehospi...
This is an investigator-initiated, large, national, prospective, observational cohort study aiming to recruit >500 patients in haemorrhagic shock after major trauma. We aim at describing the current p...
the exploration of the effect size of the variation in clinical practice on the mortality of hypotensive trauma patients. The primary outcome measure will be 24 hours, 7-day and 30-day mortality. Seco...
age >18 years, traumatic injury attended by a HEMS team including a physician, a systolic blood pressure <90 mm Hg or weak/absent radial pulse and a confirmed or clinically likely diagnosis of major h...
The study has been approved by the Ethics committee 'Comitato Etico di Area Vasta Emilia Centro'. Data will be disseminated to the scientific community by abstracts submitted to international conferen...
NCT04760977....
During the first waves of the coronavirus pandemic, evidence on potential effective treatments was urgently needed. Results from observational studies on the effectiveness of hydroxychloroquine (HCQ) ...
PubMed was searched on 15 March 2021 for observational studies on the effectiveness of in-hospital use of HCQ in COVID-19 patients, published between 01/01/2020 and 01/03/2021 on. Study quality was as...
Eighteen of the 33 (55%) included observational studies were scored as critical risk of bias, eleven (33%) as serious risk and only four (12%) as moderate risk of bias. Biases were most often scored a...
Overall, the quality of observational HCQ studies was heterogeneous. Synthesis of evidence of effectiveness of HCQ in COVID-19 should focus on RCTs and carefully consider the added value and quality o...
The associations between endogenous dehydroepiandrosterone (DHEA) and DHEA sulfate (DHEAS), and depression in older women are uncertain. However, DHEA supplements are widely available over the counter...
This systematic review aimed to investigate the association between endogenous DHEA/DHEAS blood concentrations and depression/depressive symptoms in community-dwelling postmenopausal women.Evidence Re...
Of the 30 articles retrieved for full-text review, 14 met the criteria for inclusion. Seven studies were cross-sectional, six were longitudinal, and one had both cross-sectional and longitudinal data....
This systematic review does not support an association between endogenous DHEA/DHEAS and depression in postmenopausal women....