Search results for "Reference population"
showing 8 items of 8 documents
Reference Values for a Homogeneous Ferritin Assay and Traceability to the 3rd International Recombinant Standard for Ferritin (NIBSC Code 94/572)
1999
Abstract Reference values for two ferritin assays (Tina-quant®a Ferritin, Enzymun®, both Roche Diagnostics, Mannheim, Germany) were established (136 males and 139 females). To rule out inflammation as well as iron deficiency in the reference population, subjects with the C-reactive protein concentration < 5 mg/l, and zinc protoporphyrin < 40 µmol/mol heme and the soluble transferrin receptor < 3 mg/l were selected. Taking into account latent iron deficiency as well as hereditary hemochromatosis the 5–95 percentile range was as follows: male, 27–365 μg/l; female, 13–148 μg/l for Tina-quant®a and 12–151 μg/l for Enzymun®. The Tinaquant® a Ferritin assay showed a very good correlation…
Establishing the 99th percentile for high sensitivity cardiac troponin i in healthy blood donors from southern italy
2019
Introduction: The knowledge of high sensitivity cardiac troponin I (hsTnI) distribution in a reference population is mandatory for its introduction in clinical practice. The aim of this study was to define the Upper Reference Limit (URL) of hsTnI measured by Single Molecule Counting technology (SMC) in an accurately selected reference population. Materials and methods: In the study 1140 blood donors were included and selected on the basis of medical history and biomarkers. High sensitivity cardiac troponin I was measured by SMC technology (Clarity, Singulex, Alamed, USA). The 99th percentile was calculated by the non-parametric method according to the Clinical and Laboratory Standard Instit…
Diseño y validación de un cuestionario para conocer la praxis docente del profesorado de flauta travesera en centros superiores de la comunidad valen…
2017
El objetivo del presente estudio es diseñar y validar un cuestionario para conocer la opinión del profesorado de las enseñanzas superiores de flauta travesera de la Comunidad Valenciana sobre la praxis docente. La población de referencia está formada por el conjunto de profesores de flauta travesera de los tres conservatorios superiores de música de la Comunidad Valenciana: CSM “Oscar Esplà” de Alicante, CSM “Joaquín Rodrigo” de Valencia y CSM “Salvador Seguí” de Castellón. El cuestionario fue enviado a toda la población y la muestra generadora de datos resultó ser del 100%. Sin embargo dos de los encuestados no respondieron, por tanto tenemos un sesgo del 33’33%. Se considera que el estudi…
Head-to-head comparison of plasma cTnI concentration values measured with three high-sensitivity methods in a large Italian population of healthy vol…
2019
Abstract Background The study aim is to compare cTnI values measured with three high-sensitivity (hs) methods in apparently healthy volunteers and patients admitted to emergency department (ED) with acute coronary syndrome enrolled in a large multicentre study. Methods Heparinized plasma samples were collected from 1511 apparently healthy subjects from 8 Italian clinical institutions (mean age: 51.5 years, SD: 14.1 years, range: 18–65 years, F/M ratio:0.95). All volunteers denied chronic or acute diseases and had normal values of routine laboratory tests. Moreover, 1322 heparinized plasma sample were also collected by 9 Italian clinical institutions from patients admitted to ED with clinica…
Bone status in adolescents and young adults with type 1 diabetes: a 10-year longitudinal study
2020
Introduction: This study presents a 10-year longitudinal assessment of bone status in adolescents and young adults with type 1 diabetes (T1D). Material and methods: Thirty-two patients (12 female, aged 20.5 ± 3.93 years, T1D duration 13.9 ± 1.97 years) were studied using quantitative ultrasound (QUS) and dual-energy X-ray absorptiometry (DXA). Standard deviation scores (SDS) for these results were calculated. The following clinical parameters were analysed: sex, age, T1D duration, anthropometric parameters, daily insulin requirement (DIR), mean glycated haemoglobin (HbA1c) in the year preceding the examination, medication other than insulin, history of bone fractures, and comorbidities. Res…
Diseño y validación de un cuestionario para conocer la opinión del alumnado de secundaria sobre la Música Festera y sus aplicaciones en el aula
2016
El objetivo del presente estudio es presentar el diseno y la validacion de un cuestionario para conocer la opinion del alumnado de ensenanza secundaria de Torrellano (Alicante) sobre la Musica Festera y sus posibilidades de aplicacion en el aula de secundaria. La poblacion de referencia esta formada por 597 alumnos de musica distribuidos en cuatro cursos de ensenanza secundaria (1o, 2o, 3o y 4o). Si trabajamos con un nivel de confianza del 95% y un margen de error del 5%, el tamano que precisa la muestra de los alumnos para ser representativa de la poblacion de referencia es de 234. El cuestionario fue enviado a toda la poblacion y la muestra generadora de datos resulto ser de 484. La prime…
The assessment of skeletal status in young patients with Turner syndrome by 2 densitometric techniques: Phalangeal quantitative ultrasound and dual e…
2018
Background. Studies using dual energy X-ray absorptiometry (DXA) demonstrate a reduction in bone mineral density (BMD) in children and adolescents with Turner syndrome (TS). However, these studies do not take into account changes in bone size, which influence BMD in the case of short-statured patients. Phalangeal quantitative ultrasound (phQUS) measurements have shown an ability to reveal changes due to skeletal growth, aging, and bone and mineral disorders. There is limited data on bone mineral status in girls with TS assessed by 2 different techniques, i.e., DXA and phQUS. Objectives. The aim of this study was to investigate the potential negative impact of TS on bone status and to assess…
ICT competences in university students in the field of education and its relationship with learning strategies
2016
Este estudio se enmarca en el contexto universitario, y concretamente en los estudiantes, ya que son los actores principales de su proceso de aprendizaje. El objetivo se centra en analizar las competencias en TIC (tecnológicas, pedagógicas y éticas) de estudiantes universitarios del ámbito de la Educación y su relación con las Estrategias de Aprendizaje. Además, se tienen en cuenta en el planteamiento desarrollado determinadas variables personales y contextuales claves. La población de referencia la constituyen los estudiantes universitarios de titulaciones pertenecientes al ámbito de la Educación de la Universidad de Valencia. La información se ha recogido a través de cuestionarios. Se ha …