30 results on '"Scherdel P"'
Search Results
2. Performance of glial fibrillary acidic protein (GFAP) and ubiquitin carboxy-terminal hydrolase L1 (UCH-L1) biomarkers in predicting CT scan results and neurological outcomes in children with traumatic brain injury (BRAINI-2 paediatric study): protocol of a European prospective multicentre study
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Vincent Sapin, Javier de la Cruz, Alfonso Lagares, Odile Mejan, Vladislav Pavlov, François Dubos, Christèle Gras-Le-Guen, Anne Chauvire-Drouard, Fleur Lorton, María Antonia Poca, Thibault de Groc, Belén Rivero, Rocío Rodrigo, Peter Biberthaler, Noelia Montoya, Paula Duch, Aasma Sahuquillo, Pauline Scherdel, Markus Lehner, Lydie Abaléa, Aymeric Cantais, Véronique Chasle, Marie-Amélie Chêne, Béatrice De Pracontal, Alban Laspougeas, Ophélia Le Gentil, Hélène Liénard, Juliette Massot, Cédric Ménager, Sidney Passat, Nadia Savy, Gaelle Tourniaire, Serafín Alonso, Eva Andreu, Montserrat Feliu, Sandra Galve, Francisca Munar, Cristina Muro, Elena Vilardell, Iván Valverde, Sonia Cañadas, Sebastià González, Esther Lera, Olalla Rodríguez, Mónica Sancosmed, Núria Wörner, Pablo Martín Munarriz, Javier Saceda, and Hannah Luz
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Medicine - Abstract
Introduction In light of the burden of traumatic brain injury (TBI) in children and the excessive number of unnecessary CT scans still being performed, new strategies are needed to limit their use while minimising the risk of delayed diagnosis of intracranial lesions (ICLs). Identifying children at higher risk of poor outcomes would enable them to be better monitored. The use of the blood-based brain biomarkers glial fibrillar acidic protein (GFAP) and ubiquitin carboxy-terminal hydrolase-L1 (UCH-L1) could help clinicians in this decision. The overall aim of this study is to provide new knowledge regarding GFAP and UCH-L1 in order to improve TBI management in the paediatric population.Methods and analysis We will conduct a European, prospective, multicentre study, the BRAINI-2 paediatric study, in 20 centres in France, Spain and Switzerland with an inclusion period of 30 months for a total of 2880 children and adolescents included. To assess the performance of GFAP and UCH-L1 used separately and in combination to predict ICLs on CT scans (primary objective), 630 children less than 18 years of age with mild TBI, defined by a Glasgow Coma Scale score of 13–15 and with a CT scan will be recruited. To evaluate the potential of GFAP and UCH-L1 in predicting the prognosis after TBI (secondary objective), a further 1720 children with mild TBI but no CT scan as well as 130 children with moderate or severe TBI will be recruited. Finally, to establish age-specific reference values for GFAP and UCH-L1 (secondary objective), we will include 400 children and adolescents with no history of TBI.Ethics and dissemination This study has received ethics approval in all participating countries. Results from our study will be disseminated in international peer-reviewed journals. All procedures were developed in order to assure data protection and confidentiality.Trial registration number NCT05413499.
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- 2024
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3. Advancing Efficiency in Mineral Construction Materials Recycling: A Comprehensive Approach Integrating Machine Learning and X-ray Diffraction Analysis
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Markus Wilhelm, Frank Lotter, Christian Scherdel, and Jan Schmitt
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machine learning ,classification ,minerals ,X-ray diffraction ,construction materials ,Building construction ,TH1-9745 - Abstract
In the context of environmental protection, the construction industry plays a key role with significant CO2 emissions from mineral-based construction materials. Recycling these materials is crucial, but the presence of hazardous substances, i.e., in older building materials, complicates this effort. To be able to legally introduce substances into a circular economy, reliable predictions within minimal possible time are necessary. This work introduces a machine learning approach for detecting trace quantities (≥0.06 wt%) of minerals, exemplified by siderite in calcium carbonate mixtures. The model, trained on 1680 X-ray powder diffraction datasets, provides dependable and fast predictions, eliminating the need for specialized expertise. While limitations exist in transferability to other mineral traces, the approach offers automation without expertise and a potential for real-world applications with minimal prediction time.
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- 2024
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4. Extent of the protection afforded by histo-blood group polymorphism against rotavirus gastroenteritis in metropolitan France and French Guiana
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Lydie Masson, Laure Barbé, Fanny Henaff, Tasnuva Ahmed, Béatrice Le Moullac-Vaidye, Cécile Peltier, Sarah S Marchand, Pauline Scherdel, Marie-Anne Vibet, Nathalie Ruvoën-Clouet, Narcisse Elenga, Berthe-Marie Imbert-Marcille, Christèle Gras-Le Guen, and Jacques Le Pendu
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rotavirus ,gastroenteritis ,genetic susceptibility ,histo-blood group antigens ,disease severity ,metropolitan France ,Microbiology ,QR1-502 - Abstract
Human rotaviruses attach to histo-blood group antigens glycans and null alleles of the ABO, FUT2 and FUT3 genes seem to confer diminished risk of gastroenteritis. Yet, the true extent of this protection remains poorly quantified. Here, we conducted a prospective study to evaluate the risk of consulting at the hospital in non-vaccinated pediatric patients according to the ABO, FUT2 (secretor) and FUT3 (Lewis) polymorphisms, in Metropolitan France and French Guiana. At both locations, P genotypes were largely dominated by P [8]-3, with P [6] cases exclusively found in French Guiana. The FUT2 null (nonsecretor) and FUT3 null (Lewis negative) phenotypes conferred near full protection against severe gastroenteritis due to P [8]-3 strains (OR 0.03, 95% CI [0.00–0.21] and 0.1, 95% CI [0.01–0.43], respectively in Metropolitan France; OR 0.08, 95% CI [0.01–0.52] and 0.14, 95%CI [0.01–0.99], respectively in French Guiana). Blood group O also appeared protective in Metropolitan France (OR 0.38, 95% CI [0.23–0.62]), but not in French Guiana. The discrepancy between the two locations was explained by a recruitment at the hospital of less severe cases in French Guiana than in Metropolitan France. Considering the frequencies of the null ABO, Secretor and Lewis phenotypes, the data indicate that in a Western European population, 34% (95% CI [29%; 39%]) of infants are genetically protected against rotavirus gastroenteritis of sufficient severity to lead to hospital visit.
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- 2023
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5. Earlier diagnosis in anorexia nervosa: better watch growth charts!
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Morgane Marion, Sylvie Lacroix, Marylène Caquard, Laurence Dreno, Pauline Scherdel, Christèle Gras Le Guen, Emmanuelle Caldagues, and Elise Launay
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Adolescent ,Anorexia nervosa. ,Eating disorder. ,Feeding disorder. ,Time to diagnosis. ,Early diagnosis. ,Psychiatry ,RC435-571 - Abstract
Abstract Background A better understanding of the healthcare pathway of children and adolescents with anorexia nervosa (AN) may contribute to earlier detection and better disease management. Here we measured and compared the symptomatic time to diagnosis (TTD) (time between the first symptoms, as reported by parents, and the diagnosis) and the auxological TTD (time between the deviation in the weight growth curve and the diagnosis). Methods We performed a monocentric retrospective study including all patients age 9 years to 16 years who were hospitalized in Nantes University Hospital for AN between 2013 and 2016. We analysed the two TTDs by medical record review and growth curve investigation. TTDs were described by medians and Kaplan-Meier curves. Two profiles of patients were compared according to the kinetics of growth deviation and the occurrence of symptoms. Results Among the 137 patients included, the median symptomatic and auxological TTDs was 7.0 months (IQR: 4.0–12.0) and 7.2 months (IQR: 2.0–18.0). TTDs were significantly different but clinically similar. For 48% of the patients, a deviation in the growth curve could have been noted at a median of 9.7 months (IQR: 3.0–18.0) before the first symptoms were reported by parents. Those patients showed significantly slower weight loss than did patients with first symptoms reported before growth deviation (weight loss rate 0.41% vs 1.90% per month, p
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- 2020
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6. Head circumference from birth to five years in France: New national reference charts and comparison to WHO standards
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Manon Bergerat, Barbara Heude, Marion Taine, Sylvie Nguyen The Tich, Andreas Werner, Bruno Frandji, Thomas Blauwblomme, Dorin Sumanaru, Marie-Aline Charles, Martin Chalumeau, and Pauline Scherdel
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Big-data ,Child ,Growth chart ,Head circumference ,Models ,Public aspects of medicine ,RA1-1270 - Abstract
Background: The monitoring of head circumference (HC) is essential to early detect any conditions affecting its growth in early childhood. A positive secular trend and regional specificities in HC suggested the need to provide updated national HC reference growth charts. Methods: We extracted all growth data collected from 42 primary-care physicians from across the French metropolitan territory who used the same electronic medical-records software. We selected HC measurements up to age five years for all children who were born after 1990 with birth weight > 2500 g. We derived new HC growth charts by using Generalized Additive Models for Location, Scale and Shape, then externally validated them until 30 months of age by comparison with the national population-based Étude Longitudinale Française depuis l'Enfance (ELFE) birth cohort and compared them to previous French and WHO growth charts. Findings: With 973,869 HC measurements from 157,762 children, new calibrated HC growth charts from birth to age five years were generated. The new HC growth charts showed good external fit by comparison with the ELFE birth cohort. As compared with the new HC growth charts, the previous French and WHO growth charts mean HC z-scores were, respectively, -0.4 and -0.6 SD for girls and -0.2 and -0.6 SD for boys. Interpretation: We produced and validated national calibrated HC growth charts by using a novel big-data approach applied to data routinely collected in clinical practice. Comparison with previous French and WHO growth charts confirmed a positive secular trend since the 1960s and regional specificities. Funding: The French Ministry of Health; Laboratoires Guigoz—General Pediatrics section of the French Society of Pediatrics—Paediatric Epidemiological Research Group; the French Association of Ambulatory Pediatrics; and educational grant from the Regional Health Agency of Ile-de-France.
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- 2021
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7. Vocal Tract Discomfort Scale (VTDS) and Voice Symptom Scale (VoiSS) in the Early Identification of Italian Teachers with Voice Disorders
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Bruno Galletti, Federico Sireci, Roberta Mollica, Elisabetta Iacona, Francesco Freni, Francesco Martines, Enrique Perellò Scherdel, Rocco Bruno, Patrizia Longo, and Francesco Galletti
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voice disorders ,voiss ,vtds ,teachers ,Medicine ,Otorhinolaryngology ,RF1-547 - Abstract
Introduction The current Italian law does not include any guidance regarding voice education, prevention of voice disorders and screening in subjects with high vocal loading such as teachers. Objectives We aimed to check the correlation between the Vocal Tract Discomfort Scale (VTDS) with the Voice Symptom Scale (VoiSS) for the evaluation of Italian teachers. In addition, we aimed to investigate whether there are differences in the frequency and intensity of discomfort symptoms in teachers with disabilities comparing vocal tract discomfort symptoms in teachers with high risk (HRVD) and low risk (LRVD) of vocal disorders according to the VoiSS cutoff (> 15.5). Methods We analyzed 160 Italian teachers (111 women and 49 men) that completed the VTDS and VoiSS at vocal evaluation. The Spearman correlation test was applied to all variables. The Mann-Whitney U test was used to compare the average number of discomfort symptoms among HRVD and LRVD teachers. Results A moderate positive correlation was observed between the average number, frequency, and intensity of discomfort symptom and the total score, physical domain score, and limitation domain score of the VoiSS. Only the emotional domain score of the VoiSS showed a weak positive correlation (p
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- 2020
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8. A big-data approach to producing descriptive anthropometric references: a feasibility and validation study of paediatric growth charts
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Barbara Heude, PhD, Pauline Scherdel, PhD, Andreas Werner, MD, Morgane Le Guern, MSc, Nathalie Gelbert, MD, Déborah Walther, MSc, Michel Arnould, MD, Marc Bellaïche, MD, Bertrand Chevallier, ProfMD, Jacques Cheymol, MD, Emmanuel Jobez, MD, Sylvie N'Guyen, ProfPhD, Christine Pietrement, ProfPhD, Rachel Reynaud, ProfPhD, Jean-François Salaün, MD, Babak Khoshnood, PhD, Jennifer Zeitlin, ProfPhD, Jean Maccario, ProfPhD, Gérard Breart, ProfMD, Jean-Christophe Thalabard, ProfPhD, Marie-Aline Charles, PhD, Jérémie Botton, PhD, Bruno Frandji, PhD, and Martin Chalumeau, ProfPhD
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Computer applications to medicine. Medical informatics ,R858-859.7 - Abstract
Summary: Background: Both national and WHO growth charts have been found to be poorly calibrated with the physical growth of children in many countries. We aimed to generate new national growth charts for French children in the context of huge datasets of physical growth measurements routinely collected by office-based health practitioners. Methods: We recruited 32 randomly sampled primary care paediatricians and ten volunteer general practitioners from across the French metropolitan territory who used the same electronic medical records software, from which we extracted all physical growth data for the paediatric patients, with anonymisation. We included measurements from all children born from Jan 1, 1990, and aged 1 month to 18 years by Feb 8, 2018, with birthweight greater than 2500 g, to which an automated process of data cleaning developed to detect and delete measurement or transcription errors was applied. Growth charts for weight and height were derived by using generalised additive models for location, scale, and shape with the Box-Cox power exponential distribution. We compared the new charts to WHO growth charts and existing French national growth charts, and validated our charts using growth data from recent national cross-sectional surveys. Findings: After data cleaning, we included 1 458 468 height and 1 690 340 weight measurements from 238 102 children. When compared with the existing French national and WHO growth charts, all height SD and weight percentile curves for the new growth charts were distinctly above those for the existing French national growth charts, as early as age 1 month, with an average difference of −0·75 SD for height and −0·50 SD for weight for both sexes. Comparison with national cross-sectional surveys showed satisfactory calibration, with generally good fit for children aged 5–6 years and 10–11 years in height and weight and small differences at age 14–15 years. Interpretation: We successfully produced calibrated paediatric growth charts by using a novel big-data approach applied to data routinely collected in clinical practice that could be used in many fields other than anthropometry. Funding: The French Ministry of Health; Laboratoires Guigoz—General Pediatrics section of the French Society of Pediatrics—Pediatric Epidemiological Research Group; and the French Association for Ambulatory Pediatrics.
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- 2019
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9. Earlier diagnosis in anorexia nervosa: better watch growth charts!
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Marion, Morgane, Lacroix, Sylvie, Caquard, Marylène, Dreno, Laurence, Scherdel, Pauline, Guen, Christèle Gras Le, Caldagues, Emmanuelle, and Launay, Elise
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- 2020
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10. Priority target conditions for algorithms for monitoring children's growth: Interdisciplinary consensus.
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Pauline Scherdel, Rachel Reynaud, Christine Pietrement, Jean-François Salaün, Marc Bellaïche, Michel Arnould, Bertrand Chevallier, Hugues Piloquet, Emmanuel Jobez, Jacques Cheymol, Emmanuelle Bichara, EBGM III study group, Barbara Heude, and Martin Chalumeau
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Medicine ,Science - Abstract
BACKGROUND:Growth monitoring of apparently healthy children aims at early detection of serious conditions through the use of both clinical expertise and algorithms that define abnormal growth. Optimization of growth monitoring requires standardization of the definition of abnormal growth, and the selection of the priority target conditions is a prerequisite of such standardization. OBJECTIVE:To obtain a consensus about the priority target conditions for algorithms monitoring children's growth. METHODS:We applied a formal consensus method with a modified version of the RAND/UCLA method, based on three phases (preparatory, literature review, and rating), with the participation of expert advisory groups from the relevant professional medical societies (ranging from primary care providers to hospital subspecialists) as well as parent associations. We asked experts in the pilot (n = 11), reading (n = 8) and rating (n = 60) groups to complete the list of diagnostic classification of the European Society for Paediatric Endocrinology and then to select the conditions meeting the four predefined criteria of an ideal type of priority target condition. RESULTS:Strong agreement was obtained for the 8 conditions selected by the experts among the 133 possible: celiac disease, Crohn disease, craniopharyngioma, juvenile nephronophthisis, Turner syndrome, growth hormone deficiency with pituitary stalk interruption syndrome, infantile cystinosis, and hypothalamic-optochiasmatic astrocytoma (in decreasing order of agreement). CONCLUSION:This national consensus can be used to evaluate the algorithms currently suggested for growth monitoring. The method used for this national consensus could be re-used to obtain an international consensus.
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- 2017
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11. Prioritisation of sugar to tackle obesity
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Rhea Saksena and Lucas Scherdel
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Public aspects of medicine ,RA1-1270 - Published
- 2015
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12. Should the WHO growth charts be used in France?
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Pauline Scherdel, Jérémie Botton, Marie-Françoise Rolland-Cachera, Juliane Léger, Fabienne Pelé, Pierre Yves Ancel, Chantal Simon, Katia Castetbon, Benoit Salanave, Hélène Thibault, Sandrine Lioret, Sandrine Péneau, Gaelle Gusto, Marie-Aline Charles, and Barbara Heude
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Medicine ,Science - Abstract
BackgroundGrowth charts are an essential clinical tool for evaluating a child's health and development. The current French reference curves, published in 1979, have recently been challenged by the 2006 World Health Organization (WHO) growth charts.ObjectiveTo evaluate and compare the growth of French children who were born between 1981 and 2007, with the WHO growth charts and the French reference curves currently used.DesignAnthropometric measurements from French children, who participated in 12 studies, were analyzed: 82,151 measurements were available for 27,257 children in different age groups, from birth to 18 years. We calculated and graphically compared mean z-scores based on the WHO and French curves, for height, weight and Body Mass Index (BMI) according to age and sex. The prevalence of overweight using the WHO, the French and International Obesity Task Force definitions were compared.ResultsOur population of children was on average 0.5 standard deviations taller than the French reference population, from the first month of life until puberty age. Mean z-scores for height, weight and BMI were closer to zero based on the WHO growth charts than on the French references from infancy until late adolescence, except during the first six months. These differences not related to breastfeeding rates. As expected, the prevalence of overweight depended on the reference used, and differences varied according to age.ConclusionThe WHO growth charts may be appropriate for monitoring growth of French children, as the growth patterns in our large population of French children were closer to the WHO growth charts than to the French reference curves, from 6 months onwards. However, there were some limitations in the use of these WHO growth charts, and further investigation is needed.
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- 2015
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13. The search for international consensus on LGBT health
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Lucas Scherdel, Amelia Martin, Abi Deivanayagam, Ellen Adams, and Thomas Shanahan
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Public aspects of medicine ,RA1-1270 - Published
- 2014
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14. Porous organic and carbon xerogels derived from alkaline aqueous phenol–formaldehyde solutions
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Scherdel, C., Gayer, R., and Reichenauer, G.
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- 2012
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15. Organic and carbon xerogels derived from sodium carbonate controlled polymerisation of aqueous phenol-formaldehyde solutions
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Scherdel, C., Gayer, R., Slawik, T., Reichenauer, G., and Scherb, T.
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- 2011
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16. Growth monitoring: a survey of current practices of primary care paediatricians in Europe.
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Pauline Scherdel, Jean-François Salaün, Marie-Noëlle Robberecht-Riquet, Laura Reali, Gabriella Páll, Elke Jäger-Roman, Manuel Praena Crespo, Marilena Moretto, Margareta Seher-Zupančič, Sigurlaug Agustsson, European Confederation of Primary Care Paediatricians Research Group, and Martin Chalumeau
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Medicine ,Science - Abstract
ObjectiveWe aimed to study current practices in growth monitoring by European primary care paediatricians and to explore their perceived needs in this field.MethodsWe developed a cross-sectional, anonymous on-line survey and contacted primary care paediatricians listed in national directories in the 18 European countries with a confederation of primary care paediatricians. Paediatricians participated in the survey between April and September 2011.ResultsOf the 1,198 paediatricians from 11 European countries (response rate 13%) who participated, 29% used the 2006 World Health Organization Multicentre Growth Reference Study growth charts, 69% used national growth charts; 61% used software to draw growth charts and 79% did not use a formal algorithm to detect abnormal growth on growth charts. Among the 21% of paediatricians who used algorithms, many used non-algorithmic simple thresholds for height and weight and none used the algorithms published in the international literature. In all, 69% of paediatricians declared that a validated algorithm to monitor growth would be useful in daily practice. We found important between-country variations.ConclusionThe varied growth-monitoring practices declared by primary care paediatricians reveals the need for standardization and evidence-based algorithms to define abnormal growth and the development of software that would use such algorithms.
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- 2013
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17. COMPARISON OF USING WHO GROWTH STANDARDS WITH CURRENT FRENCH REFERENCES FOR EVALUATING FRENCH CHILDREN OVERWEIGHT.: 897 accepted poster
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Scherdel, P., bottom, J., Rolland-cachera, M. F., Peneau, S., Chalumeau, M., Weill, J., Goulet, O., Lefeuvre, B., Léger, J., Carel, J. C., Dufourg, M. N., Bois, C., Charles, M. A., and Heude, B.
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- 2012
18. Growth monitoring as an early detection tool: a systematic review
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Scherdel, P., Dunkel, L., Dommelen, P. van, Goulet, O., Salaün, J.F., Brauner, R., Heude, B., and Chalumeau, M.
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Life ,Health ,CH - Child Health ,ELSS - Earth, Life and Social Sciences ,Healthy for Life ,Healthy Living - Abstract
Growth monitoring of apparently healthy children aims at early detection of serious underlying disorders. However, existing growth-monitoring practices are mainly based on suboptimal methods, which can result in delayed diagnosis of severe diseases and inappropriate referrals. We did a systematic review to address two key and interconnected questions underlying growth monitoring: which conditions should be targeted, and how should abnormal growth be defined? We systematically searched for studies reporting algorithms for growth monitoring in children and studies comparing the performance of new WHO growth charts with that of other growth charts. Among 1556 identified citations, 69 met the inclusion criteria. Six target conditions have mainly been studied: Turner syndrome, coeliac disease, cystic fibrosis, growth hormone deficiency, renal tubular acidosis, and small for gestational age with no catch-up after 2 or 3 years. Seven algorithms to define abnormal growth have been proposed in the past 20 years, but their level of validation is low, and their overall sensitivities and specificities vary substantially; however, the Grote and Saari clinical decision rules seem the most promising. Two studies reported that WHO growth charts had poorer performance compared with other existing growth charts for early detection of target conditions. Available data suggest a large gap between the widespread implementation of growth monitoring and its level of evidence or the clinical implications of early detection of serious disorders in children. Further investigations are needed to standardise the practice of growth monitoring, with a consensus on a few priority target conditions and with internationally validated clinical decision rules to define abnormal growth, including the selection of appropriate growth charts. Including supplementary appendix
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- 2016
19. Modeling and Simulation of the Aggregation and the Structural and Mechanical Properties of Silica Aerogels
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Abdusalamov, Rasul, Scherdel, Christian, Itskov, Mikhail, Milow, Barbara, Reichenauer, Gudrun, and Rege, Ameya
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Mechanical properties of aerogels are controlled by the connectivity of their network. In this paper, in order to study these properties, computational models of silica aerogels with different morphological entities have been generated by means of the diffusion-limited cluster–cluster aggregation (DLCA) algorithm. New insights into the influence of the model parameters on the generated aerogel structures and on the finite deformation under mechanical loads are provided. First, the structural and fractal properties of the modeled aerogels are investigated. The dependence of morphological properties such as the particle radius and density on these properties is studied. The results are correlated with experimental small-angle X-ray scattering (SAXS) data of a silica aerogel. The DLCA models of silica aerogels are analyzed for their mechanical properties with finite element simulations. There, the aerogel particles are modeled as nodes and the interparticle bonds as beam elements to account for bond stretching, bending, and torsion. The scaling relation between the elastic moduli Eand relative density ρ, E∝ ρm, is investigated and the exponent m= 3.61 is determined. Backbone paths evidently appear in the 3-d network structure under deformation, while the majority of the bonds in the network do not bear loads. The sensitivity of particle neck-sizes on the mechanical properties is also studied. All the results are shown to be qualitatively as well as quantitatively in agreement with the experimental data or with the available literature.
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- 2021
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20. Vocal Tract Discomfort Scale (VTDS) and Voice Symptom Scale (VoiSS) in the Early Identification of Italian Teachers with Voice Disorders
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Galletti, Bruno, Sireci, Federico, Mollica, Roberta, Iacona, Elisabetta, Freni, Francesco, Martines, Francesco, Scherdel, Enrique Perellò, Bruno, Rocco, Longo, Patrizia, and Galletti, Francesco
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- 2020
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21. Algorithms to Define Abnormal Growth in Children: External Validation and Head-To-Head Comparison.
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Scherdel, Pauline, Matczak, Soraya, Léger, Juliane, Martinez-Vinson, Christine, Goulet, Olivier, Brauner, Raja, Nicklaus, Sophie, Resche-Rigon, Matthieu, Chalumeau, Martin, and Heude, Barbara
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Growth monitoring of apparently healthy children aims at early detection of serious conditions by use of both clinical expertise and algorithms that define abnormal growth. The seven existing algorithms provide contradictory definitions of growth abnormality and have a low level of validation.
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- 2019
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22. Response to Letter to the Editor: "Algorithms to Define Abnormal Growth in Children: External Validation and Head-to-Head Comparison".
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Chalumeau, Martin, Scherdel, Pauline, and Heude, Barbara
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- 2019
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23. Performance of glial fibrillary acidic protein (GFAP) and ubiquitin carboxy-terminal hydrolase L1 (UCH-L1) biomarkers in predicting CT scan results and neurological outcomes in children with traumatic brain injury (BRAINI-2 paediatric study): protocol of a European prospective multicentre study.
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Lorton F, Lagares A, de la Cruz J, Méjan O, Pavlov V, Sapin V, Poca MA, Lehner M, Biberthaler P, Chauviré-Drouard A, Gras-Le-Guen C, and Scherdel P
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- Humans, Child, Prospective Studies, Adolescent, Child, Preschool, Europe, Female, Male, Infant, Multicenter Studies as Topic, Predictive Value of Tests, Brain Injuries, Traumatic diagnostic imaging, Ubiquitin Thiolesterase blood, Biomarkers blood, Tomography, X-Ray Computed methods, Glial Fibrillary Acidic Protein blood
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Introduction: In light of the burden of traumatic brain injury (TBI) in children and the excessive number of unnecessary CT scans still being performed, new strategies are needed to limit their use while minimising the risk of delayed diagnosis of intracranial lesions (ICLs). Identifying children at higher risk of poor outcomes would enable them to be better monitored. The use of the blood-based brain biomarkers glial fibrillar acidic protein (GFAP) and ubiquitin carboxy-terminal hydrolase-L1 (UCH-L1) could help clinicians in this decision. The overall aim of this study is to provide new knowledge regarding GFAP and UCH-L1 in order to improve TBI management in the paediatric population., Methods and Analysis: We will conduct a European, prospective, multicentre study, the BRAINI-2 paediatric study, in 20 centres in France, Spain and Switzerland with an inclusion period of 30 months for a total of 2880 children and adolescents included. To assess the performance of GFAP and UCH-L1 used separately and in combination to predict ICLs on CT scans (primary objective), 630 children less than 18 years of age with mild TBI, defined by a Glasgow Coma Scale score of 13-15 and with a CT scan will be recruited. To evaluate the potential of GFAP and UCH-L1 in predicting the prognosis after TBI (secondary objective), a further 1720 children with mild TBI but no CT scan as well as 130 children with moderate or severe TBI will be recruited. Finally, to establish age-specific reference values for GFAP and UCH-L1 (secondary objective), we will include 400 children and adolescents with no history of TBI., Ethics and Dissemination: This study has received ethics approval in all participating countries. Results from our study will be disseminated in international peer-reviewed journals. All procedures were developed in order to assure data protection and confidentiality., Trial Registration Number: NCT05413499., Competing Interests: Competing interests: OM and VP are employees of bioMérieux. The other authors declare no support from any organisation for the submitted work; no financial relationships with any organisations that might have an interest in the submitted work in the previous three years; and no other relationships or activities that could appear to have influenced the submitted work., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2024
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24. Taste and smell alterations affect nutritional status in children under chemotherapy.
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Grain A, Camuset M, Gras-Leguen C, Hardouin JB, Scherdel P, and Caldari D
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- Humans, Child, Nutritional Status, Taste, Smell, Olfaction Disorders chemically induced, Olfaction Disorders epidemiology, Neoplasms complications, Neoplasms drug therapy
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Aim: This study aimed to evaluate the incidence of self-reported taste and smell alterations (TSA) in cancer paediatric patients and evaluate the impact of TSA on nutritional status in this population. We also developed and validated a composite score to detect TSA in children undergoing chemotherapy., Methods: Paediatric patients who were undergoing chemotherapy in a paediatric oncology unit were included. TSA were assessed from the Gustonco questionnaire from which a composite score was developed and internally validated, eating behaviour was assessed using Child Eating Behaviour Questionnaire, and major weight loss was defined from nutritional status. All data were calculated at 1, 3 and 6 months after chemotherapy start. Associations between nutritional status and scores were studied by using logistic models., Results: Among 49 patients included, TSA occurred in 71.7% of patients at 1 month after chemotherapy start and persisted at 3 and 6 months. TSA led to altered appetite since 1 month after chemotherapy start. The occurrence of a major weight loss at 6 months seemed to be associated with a high Gustonco score., Conclusion: Taste and smell alterations often occurred in paediatric cancer patients after chemotherapy start and seemed to be associated with impaired nutrition at 6 months after chemotherapy., (© 2023 Foundation Acta Paediatrica. Published by John Wiley & Sons Ltd.)
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- 2023
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25. Extent of the protection afforded by histo-blood group polymorphism against rotavirus gastroenteritis in metropolitan France and French Guiana.
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Masson L, Barbé L, Henaff F, Ahmed T, Le Moullac-Vaidye B, Peltier C, Marchand SS, Scherdel P, Vibet MA, Ruvoën-Clouet N, Elenga N, Imbert-Marcille BM, Gras-Le Guen C, and Le Pendu J
- Abstract
Human rotaviruses attach to histo-blood group antigens glycans and null alleles of the ABO , FUT2 and FUT3 genes seem to confer diminished risk of gastroenteritis. Yet, the true extent of this protection remains poorly quantified. Here, we conducted a prospective study to evaluate the risk of consulting at the hospital in non-vaccinated pediatric patients according to the ABO, FUT2 (secretor) and FUT3 (Lewis) polymorphisms, in Metropolitan France and French Guiana. At both locations, P genotypes were largely dominated by P [8]-3, with P [6] cases exclusively found in French Guiana. The FUT2 null (nonsecretor) and FUT3 null (Lewis negative) phenotypes conferred near full protection against severe gastroenteritis due to P [8]-3 strains (OR 0.03, 95% CI [0.00-0.21] and 0.1, 95% CI [0.01-0.43], respectively in Metropolitan France; OR 0.08, 95% CI [0.01-0.52] and 0.14, 95%CI [0.01-0.99], respectively in French Guiana). Blood group O also appeared protective in Metropolitan France (OR 0.38, 95% CI [0.23-0.62]), but not in French Guiana. The discrepancy between the two locations was explained by a recruitment at the hospital of less severe cases in French Guiana than in Metropolitan France. Considering the frequencies of the null ABO, Secretor and Lewis phenotypes, the data indicate that in a Western European population, 34% (95% CI [29%; 39%]) of infants are genetically protected against rotavirus gastroenteritis of sufficient severity to lead to hospital visit., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Masson, Barbé, Henaff, Ahmed, Le Moullac-Vaidye, Peltier, Marchand, Scherdel, Vibet, Ruvoën-Clouet, Elenga, Imbert-Marcille, Gras-Le Guen and Le Pendu.)
- Published
- 2023
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26. Head circumference from birth to five years in France: New national reference charts and comparison to WHO standards.
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Bergerat M, Heude B, Taine M, Nguyen The Tich S, Werner A, Frandji B, Blauwblomme T, Sumanaru D, Charles MA, Chalumeau M, and Scherdel P
- Abstract
Background: The monitoring of head circumference (HC) is essential to early detect any conditions affecting its growth in early childhood. A positive secular trend and regional specificities in HC suggested the need to provide updated national HC reference growth charts., Methods: We extracted all growth data collected from 42 primary-care physicians from across the French metropolitan territory who used the same electronic medical-records software. We selected HC measurements up to age five years for all children who were born after 1990 with birth weight > 2500 g. We derived new HC growth charts by using Generalized Additive Models for Location, Scale and Shape, then externally validated them until 30 months of age by comparison with the national population-based Étude Longitudinale Française depuis l'Enfance (ELFE) birth cohort and compared them to previous French and WHO growth charts., Findings: With 973,869 HC measurements from 157,762 children, new calibrated HC growth charts from birth to age five years were generated. The new HC growth charts showed good external fit by comparison with the ELFE birth cohort. As compared with the new HC growth charts, the previous French and WHO growth charts mean HC z-scores were, respectively, -0.4 and -0.6 SD for girls and -0.2 and -0.6 SD for boys., Interpretation: We produced and validated national calibrated HC growth charts by using a novel big-data approach applied to data routinely collected in clinical practice. Comparison with previous French and WHO growth charts confirmed a positive secular trend since the 1960s and regional specificities., Funding: The French Ministry of Health; Laboratoires Guigoz-General Pediatrics section of the French Society of Pediatrics-Paediatric Epidemiological Research Group; the French Association of Ambulatory Pediatrics; and educational grant from the Regional Health Agency of Ile-de-France., Competing Interests: BH, AW, MC, BF and PS are co-owners of the patent for the new national French AFPA/Inserm/CGM growth charts. All remaining authors declare no competing interests., (© 2021 The Authors.)
- Published
- 2021
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27. A big-data approach to producing descriptive anthropometric references: a feasibility and validation study of paediatric growth charts.
- Author
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Heude B, Scherdel P, Werner A, Le Guern M, Gelbert N, Walther D, Arnould M, Bellaïche M, Chevallier B, Cheymol J, Jobez E, N'Guyen S, Pietrement C, Reynaud R, Salaün JF, Khoshnood B, Zeitlin J, Maccario J, Breart G, Thalabard JC, Charles MA, Botton J, Frandji B, and Chalumeau M
- Subjects
- Adolescent, Child, Child, Preschool, Feasibility Studies, Female, Humans, Infant, Male, Reference Values, Big Data, Body Height, Body Weight, Growth Charts
- Abstract
Background: Both national and WHO growth charts have been found to be poorly calibrated with the physical growth of children in many countries. We aimed to generate new national growth charts for French children in the context of huge datasets of physical growth measurements routinely collected by office-based health practitioners., Methods: We recruited 32 randomly sampled primary care paediatricians and ten volunteer general practitioners from across the French metropolitan territory who used the same electronic medical records software, from which we extracted all physical growth data for the paediatric patients, with anonymisation. We included measurements from all children born from Jan 1, 1990, and aged 1 month to 18 years by Feb 8, 2018, with birthweight greater than 2500 g, to which an automated process of data cleaning developed to detect and delete measurement or transcription errors was applied. Growth charts for weight and height were derived by using generalised additive models for location, scale, and shape with the Box-Cox power exponential distribution. We compared the new charts to WHO growth charts and existing French national growth charts, and validated our charts using growth data from recent national cross-sectional surveys., Findings: After data cleaning, we included 1 458 468 height and 1 690 340 weight measurements from 238 102 children. When compared with the existing French national and WHO growth charts, all height SD and weight percentile curves for the new growth charts were distinctly above those for the existing French national growth charts, as early as age 1 month, with an average difference of -0·75 SD for height and -0·50 SD for weight for both sexes. Comparison with national cross-sectional surveys showed satisfactory calibration, with generally good fit for children aged 5-6 years and 10-11 years in height and weight and small differences at age 14-15 years., Interpretation: We successfully produced calibrated paediatric growth charts by using a novel big-data approach applied to data routinely collected in clinical practice that could be used in many fields other than anthropometry., Funding: The French Ministry of Health; Laboratoires Guigoz-General Pediatrics section of the French Society of Pediatrics-Pediatric Epidemiological Research Group; and the French Association for Ambulatory Pediatrics., (Copyright © 2019 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY-NC-ND 4.0 license. Published by Elsevier Ltd.. All rights reserved.)
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- 2019
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28. Priority target conditions for algorithms for monitoring children's growth: Interdisciplinary consensus.
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Scherdel P, Reynaud R, Pietrement C, Salaün JF, Bellaïche M, Arnould M, Chevallier B, Piloquet H, Jobez E, Cheymol J, Bichara E, Heude B, and Chalumeau M
- Subjects
- Child, Humans, Pilot Projects, Algorithms, Consensus, Growth and Development, Interdisciplinary Studies
- Abstract
Background: Growth monitoring of apparently healthy children aims at early detection of serious conditions through the use of both clinical expertise and algorithms that define abnormal growth. Optimization of growth monitoring requires standardization of the definition of abnormal growth, and the selection of the priority target conditions is a prerequisite of such standardization., Objective: To obtain a consensus about the priority target conditions for algorithms monitoring children's growth., Methods: We applied a formal consensus method with a modified version of the RAND/UCLA method, based on three phases (preparatory, literature review, and rating), with the participation of expert advisory groups from the relevant professional medical societies (ranging from primary care providers to hospital subspecialists) as well as parent associations. We asked experts in the pilot (n = 11), reading (n = 8) and rating (n = 60) groups to complete the list of diagnostic classification of the European Society for Paediatric Endocrinology and then to select the conditions meeting the four predefined criteria of an ideal type of priority target condition., Results: Strong agreement was obtained for the 8 conditions selected by the experts among the 133 possible: celiac disease, Crohn disease, craniopharyngioma, juvenile nephronophthisis, Turner syndrome, growth hormone deficiency with pituitary stalk interruption syndrome, infantile cystinosis, and hypothalamic-optochiasmatic astrocytoma (in decreasing order of agreement)., Conclusion: This national consensus can be used to evaluate the algorithms currently suggested for growth monitoring. The method used for this national consensus could be re-used to obtain an international consensus.
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- 2017
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29. Should the WHO growth charts be used in France?
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Scherdel P, Botton J, Rolland-Cachera MF, Léger J, Pelé F, Ancel PY, Simon C, Castetbon K, Salanave B, Thibault H, Lioret S, Péneau S, Gusto G, Charles MA, and Heude B
- Subjects
- Adolescent, Child, Child, Preschool, Female, France, Humans, Male, Prospective Studies, World Health Organization, Anthropometry methods, Body Weights and Measures standards, Growth Charts
- Abstract
Background: Growth charts are an essential clinical tool for evaluating a child's health and development. The current French reference curves, published in 1979, have recently been challenged by the 2006 World Health Organization (WHO) growth charts., Objective: To evaluate and compare the growth of French children who were born between 1981 and 2007, with the WHO growth charts and the French reference curves currently used., Design: Anthropometric measurements from French children, who participated in 12 studies, were analyzed: 82,151 measurements were available for 27,257 children in different age groups, from birth to 18 years. We calculated and graphically compared mean z-scores based on the WHO and French curves, for height, weight and Body Mass Index (BMI) according to age and sex. The prevalence of overweight using the WHO, the French and International Obesity Task Force definitions were compared., Results: Our population of children was on average 0.5 standard deviations taller than the French reference population, from the first month of life until puberty age. Mean z-scores for height, weight and BMI were closer to zero based on the WHO growth charts than on the French references from infancy until late adolescence, except during the first six months. These differences not related to breastfeeding rates. As expected, the prevalence of overweight depended on the reference used, and differences varied according to age., Conclusion: The WHO growth charts may be appropriate for monitoring growth of French children, as the growth patterns in our large population of French children were closer to the WHO growth charts than to the French reference curves, from 6 months onwards. However, there were some limitations in the use of these WHO growth charts, and further investigation is needed.
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- 2015
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30. Growth monitoring: a survey of current practices of primary care paediatricians in Europe.
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Scherdel P, Salaün JF, Robberecht-Riquet MN, Reali L, Páll G, Jäger-Roman E, Crespo MP, Moretto M, Seher-Zupančič M, Agustsson S, and Chalumeau M
- Subjects
- Algorithms, Child, Cross-Sectional Studies, Europe, Growth Charts, Humans, Physicians, Practice Patterns, Physicians' standards, Reference Standards, Pediatrics standards, Primary Health Care standards
- Abstract
Objective: We aimed to study current practices in growth monitoring by European primary care paediatricians and to explore their perceived needs in this field., Methods: We developed a cross-sectional, anonymous on-line survey and contacted primary care paediatricians listed in national directories in the 18 European countries with a confederation of primary care paediatricians. Paediatricians participated in the survey between April and September 2011., Results: Of the 1,198 paediatricians from 11 European countries (response rate 13%) who participated, 29% used the 2006 World Health Organization Multicentre Growth Reference Study growth charts, 69% used national growth charts; 61% used software to draw growth charts and 79% did not use a formal algorithm to detect abnormal growth on growth charts. Among the 21% of paediatricians who used algorithms, many used non-algorithmic simple thresholds for height and weight and none used the algorithms published in the international literature. In all, 69% of paediatricians declared that a validated algorithm to monitor growth would be useful in daily practice. We found important between-country variations., Conclusion: The varied growth-monitoring practices declared by primary care paediatricians reveals the need for standardization and evidence-based algorithms to define abnormal growth and the development of software that would use such algorithms.
- Published
- 2013
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