(1 - 20 of 29)

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Joustra, S.D. (author), van der Plas, E.M. (author), Goede, J. (author), Oostdijk, W. (author), Delemarre-van de Waal, H.A. (author), Hack, W.W.M. (author), van Buuren, S. (author), Wit, J.M. (author)
Aim Accurate calculations of testicular volume standard deviation (SD) scores are not currently available. We constructed LMS-smoothed age-reference charts for testicular volume in healthy boys. Methods The LMS method was used to calculate reference data, based on testicular volumes from ultrasonography and Prader orchidometer of 769 healthy...
article 2015
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van Buuren, S. (author), Bezemer, R.A. (author), Reijneveld, S.A. (author), L' Hoir, M.P. (author)
Curve matching is a new big data technique to predict an outcome given earlier measurements. Here we apply curve matching to predict the future growth of a specific child, the target child. The method searches in large datasets of longitudinal growth data for other children who are similar to the target child in terms of factors that influence...
article 2015
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Hayes, D.J. (author), van Buuren, S. (author), ter Kuile, F.O. (author), Stasinopoulos, D.M. (author), Rigby, R.A. (author), Terlouw, D.J. (author)
Methods: A weight-for-age database was constructed from pre-existing population-based anthropometric data obtained from household surveys and research groups. It contained data collected between 1995 and 2012 on 1 263 119 individuals (909 368 female, 353 751 male) older than 14 days and younger than 50 years in 64 malaria-endemic countries....
article 2015
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Gerards, S.M.P.L. (author), Dagnelie, P.C. (author), Gubbels, J.S. (author), van Buuren, S. (author), Hamers, F.J.M. (author), Jansen, M.W.J. (author), van der Goot, O.H.M. (author), de Vries, N.K. (author), Sanders, M.R. (author), Kremers, S.P.J. (author)
Introduction Lifestyle Triple P is a general parenting intervention which focuses on preventing further excessive weight gain in overweight and obese children. The objective of the current study was to assess the effectiveness of the Lifestyle Triple P intervention in the Netherlands. Method We used a parallel randomized controlled design to...
article 2015
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Schönbeck, Y. (author), Talma, H. (author), van Dommelen, P. (author), Bakker, B. (author), Buitendijk, S.E. (author), HiraSing, R.A. (author), van Buuren, S. (author)
To assess the prevalence of overweight and obesity among Dutch children and adolescents, to examine the 30-years trend, and to create new body mass index reference charts. Design: Nationwide cross-sectional data collection by trained health care professionals. Participants: 10,129 children of Dutch origin aged 0-21 years. Main Outcome Measures:...
article 2011
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Kamphuis, M. (author), Obenhuijsen, N.H. (author), van Dommelen, P. (author), van Buuren, S. (author), Verkerk, P.H. (author), TNO Kwaliteit van Leven (author)
The main goal of this guideline for preventive child health care (PCHC) is to improve early detection of disorders that induce short stature. Based on research, evidence-based referral criteria for children aged 0-10 years with a short stature were formulated. These criteria are important for all professionals working with children, such as PCHC...
article 2010
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van Buuren, S. (author), Ooms, J.C.L. (author), TNO Kwaliteit van Leven (author)
This paper presents a method for calculating stage line diagrams, a novel type of reference diagram useful for tracking developmental processes over time. Potential fields of applications include: dentistry (tooth eruption), oncology (tumor grading, cancer staging), virology (HIV infection and disease staging), psychology (stages of cognitive...
article 2009
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Grote, F.K. (author), Oostdijk, W. (author), de Muinck Keizer-Schrama, S.M.P.F. (author), van Dommelen, P. (author), van Buuren, S. (author), Dekker, F.W. (author), Ketel, A.G. (author), Moll, H.A. (author), Wit, J.M. (author), TNO Kwaliteit van Leven (author)
Background: As abnormal growth might be the first manifestation of undetected diseases, it is important to have accurate referral criteria and a proper diagnostic work-up. In the present paper we evaluate the diagnostic work-up in secondary health care according to existing consensus guidelines and study the frequency of underlying medical...
article 2008
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van Dommelen, P. (author), de Gunst, M. (author), van Vaart, A.D. (author), van Buuren, S. (author), Boomsma, D. (author), TNO Kwaliteit van Leven (author)
Aim: To determine the size of the growth deficit in Dutch monozygotic and dizygotic twins aged 0-2.5 years as compared to singletons and to construct reference growth charts for twins. Methods: Growth of twins was studied using longitudinal data on over 4000 twins aged 0-2.5 years of the Netherlands Twin Register. The LMS method was used to...
article 2008
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Grote, F.K. (author), van Dommelen, P. (author), Oostdijk, W. (author), de Muinck Keizer-Schrama, S.M.P.F. (author), Verkerk, P.H. (author), Wit, J.M. (author), van Buuren, S. (author), TNO Kwaliteit van Leven (author)
Objective: To establish evidence based guidelines for growth monitoring on a population basis. Study design: Several auxological referral criteria were formulated and applied to longitudinal growth data from four different patient groups, as well as three samples from the general population. Results: Almost 30% of pathology can be detected by...
article 2008
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Eijkemans, M. (author), Mommers, M. (author), de Vries, S.I. (author), van Buuren, S. (author), Stafleu, A. (author), Bakker, I. (author), Thijs, C. (author), TNO Kwaliteit van Leven (author)
OBJECTIVE. Prevalence of asthma and overweight has increased simultaneously during the past decades. Several studies have reported an association between these two health problems, but it is unclear whether this relation is causal. We hypothesize that children with asthmatic symptoms are less physically active, which may contribute to the...
article 2008
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van Buuren, S. (author), TNO Kwaliteit van Leven (author)
The standard deviation score (SDS) is a powerful tool for screening for growth-related problems. However, referral rules of the type 'if SDS(Y)<d, then refer' (for some constant d) are not optimal for answering the question: 'Does this child with measurement Y belong to the reference or to the diseased population?'. If the growth standard for...
article 2008
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van den Hurk, K. (author), van Dommelen, P. (author), van Buuren, S. (author), Verkerk, P.H. (author), HiraSing, R.A. (author), TNO Kwaliteit van Leven (author)
Objective: To assess the prevalence of overweight and obesity in children living in the Netherlands and compare the findings with the Third and Fourth National Growth Studies carried out in 1980 and 1997, respectively. Design and methods: Data were obtained from the child health care system. International cut-off points for body mass index (BMI)...
article 2007
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Dousma, M. (author), Wierdsma, N. (author), van Ede, J. (author), van Buuren, S. (author), Heijmans, H.S.A. (author), de Vries, T.W. (author), TNO Kwaliteit van Leven (author)
article 2007
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van Buuren, S. (author), TNO Kwaliteit van Leven (author)
The goal of multiple imputation is to provide valid inferences for statistical estimates from incomplete data. To achieve that goal, imputed values should preserve the structure in the data, as well as the uncertainty about this structure, and include any knowledge about the process that generated the missing data. Two approaches for imputing...
article 2007
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Borghi, E. (author), de Onis, M. (author), Garza, C. (author), van den Broeck, J. (author), Frongillo, E.A. (author), Grummer-Strawn, L. (author), van Buuren, S. (author), Pan, H. (author), Molinari, L. (author), Martorell, R. (author), Onyango, A.W. (author), Martines, J.C. (author), Pinol, A. (author), Siyam, A. (author), Victoria, C.G. (author), Bhan, M.K. (author), Araújo, C.L. (author), Lartey, A. (author), Owusu, W.B. (author), Bhandari, N. (author), Norum, K.R. (author), Bjoerneboe, G.-E.Aa. (author), Mohamed, A.J. (author), Dewey, K.G. (author), Belbase, K. (author), Chumlea, C. (author), Cole, T. (author), Shrimpton, R. (author), Albernaz, E. (author), Tomasi, E. (author), de Cássia Fossati da Silveira, R. (author), Nader, G. (author), Sagoe-Moses, I. (author), Gomez, V. (author), Sagoe-Moses, C. (author), Taneja, S. (author), Rongsen, T. (author), Chetia, J. (author), Sharma, P. (author), Bahl, R. (author), Baerug, A. (author), Tufte, E. (author), Alasfoor, D. (author), Prakash, N.S. (author), Mabry, R.M. (author), Al Rajab, H.J. (author), Helmi, S.A. (author), Nommsen-Rivers, L.A. (author), Cohen, R.J. (author), Heinig, M.J. (author), TNO Kwaliteit van Leven (author)
The World Health Organization (WHO), in collaboration with a number of research institutions worldwide, is developing new child growth standards. As part of a broad consultative process for selecting the best statistical methods, WHO convened a group of statisticians and child growth experts to review available methods, develop a strategy for...
article 2006
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van Dommelen, P. (author), van Buuren, S. (author), Zandwijken, G.R.J. (author), Verkerk, P.H. (author), TNO Kwaliteit van Leven (author)
The goal of this study is to assess whether a growth curve model approach will lead to a more precise detection of Turner sydnrome (TS) than conventional referral criteria for growth monitoring. The Jenss-Bayley growth curve model was used to describe the process of growth over time. A new screening rule is defined on the parameters of this...
article 2005
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Fredriks, A.M. (author), van Buuren, S. (author), Hira Sing, R.A. (author), Wit, J.M. (author), Verloove-Vanhorick, S.P. (author)
Aim: Prevalences of overweight in The Netherlands, defined by international cut-off points, are presented in 14 500 children of Dutch origin, 2904 of Turkish and 2855 of Moroccan origin, aged 0-21 y. Results: The mean prevalence for Turkish boys and girls was 23.4% and 30.2%, for Moroccans 15.8% and 24.5%, for Dutch youths in large cities 12.6%...
article 2005
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Fredriks, A.M. (author), van Buuren, S. (author), Fekkes, M. (author), Verloove-Vanhorick, S.P. (author), Wit, J.M. (author)
The aim of this study was to present age references for waist circumference (WC), hip circumference (HC), and waist/hip ratio (WHR) in Dutch children. Cross-sectional data were obtained from 14,500 children of Dutch origin in the age range 0-21 years. National references were constructed with the LMS method. This method summarises the...
article 2005
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Fredriks, A.M. (author), van Buuren, S. (author), van Heel, W.J.M. (author), Dijkman-Neerincx, R.H.M. (author), Verloove-Vanhorick, S.P. (author), Wit, J.M. (author), TNO Kwaliteit van Leven (author)
Aims: To obtain age references for sitting height (SH), leg length (LL), and SH/H ratio in the Netherlands; to evaluate how SH standard deviation score (SDS), LL SDS, SH/H SDS, and SH/LL SDS are related to height SDS; and to study the usefulness of height corrected SH/H cut-off lines to detect Marfan syndrome and hypochondroplasia. Methods:...
article 2005
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