There are two major objectives in sampling for a research study. The first is the avoidance of bias due to selection: to achieve this a random sample must be drawn and a high response rate achieved. The second objective is to achieve an efficient use of resources by selecting a sample of a size sufficient to detect an effect of clinical importance yet not so large that effects too small to be of interest are detected. Both these aspects will be discussed here.
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JMIR Res Protoc
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Department of Dermatology, Hospital Universitario Ramon y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Madrid, Spain, Madrid, Spain.
Background: Psoriasis is an inflammatory disease primarily treated through molecular-targeted therapies. However, emerging evidence suggests that dietary interventions may also play a role in managing inflammation associated with this condition. The Mediterranean diet (MedDiet), prevalent in southern European countries, has been widely recognized for its ability to reduce cardiovascular mortality, largely due to its anti-inflammatory properties.
View Article and Find Full Text PDFPrescribed Hospital Diet Influence on Dietary Intake of Hospitalised Patients: A Cross-Sectional Study.
Nutrients
January 2025
Coimbra Health School (ESTeSC), Polytechnic University of Coimbra, 3046-854 Coimbra, Portugal.
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PLoS One
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Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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J Diabetes Metab Disord
June 2025
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