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van der Heijden, P.G.M. (author), van Puijenbroek, E.P. (author), van Buuren, S. (author), van der Hofstede, J.W. (author)
A well-known problem in spontaneous reporting systems (SRSs) for adverse drug reactions (ADRs) is under-reporting, that is, the problem that not all occurrences of ADRs are reported to the SRS. We look at the question of how to draw statistical conclusions from analyses of SRS data using reporting odds ratios. We will show that certain under...
article 2002
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van Buuren, S. (author), Fredriks, M. (author)
The worm plot visualizes differences between two distributions, conditional on the values of a covariate. Though the worm plot is a general diagnostic tool for the analysis of residuals, this paper focuses on an application in constructing growth reference curves, where the covariate of interest is age. The LMS model of Cole and Green is used to...
article 2001
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Hopman-Rock, M. (author), van Buuren, S. (author), de Kleijn de-Vrankrijker, M. (author)
Purpose: To develop a preliminary proposal for the revision of the severity code of the ICIDH-D 1980. Method: Quantitative analysis (polytomous Rasch analysis) of linked existing data sources including items about walking and dressing disability. Results: The Rasch analysis provided estimates of threshold parameters for walking and dressing item...
article 2000
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Hildebrandt, V.H. (author), Proper, K.I. (author), van den Berg, R. (author), Douwes, M. (author), van den Heuvel, S.G. (author), van Buuren, S. (author), TNO Preventie en Gezondheid (author)
Objective. To determine the effectiveness of a special form of exercise therapy ('Cesar therapy') on self reported recovery and improvement of posture amongst patients with chronic aspecific lower back pain. Design. Prospective randomized controlled and blinded investigation. Method. After informed consent had been obtained, patients with...
article 2000
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Fredriks, A.M. (author), van Buuren, S. (author), Wit, J.M. (author), Verloove-Vanhorick, S.P. (author)
Objectives - To compare the distribution of body mass index (BMI) in a national representative study in The Netherlands in 1996-7 with that from a study in 1980. Methods - Cross sectional data on height, weight, and demographics of 14 500 boys and girls of Dutch origin, aged 0-21 years, were collected from 1996 to 1997. BMI references were...
article 2000
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Fredriks, A.M. (author), van Buuren, S. (author), Burgmeijer, R.J.F. (author), Meulmeester, J.F. (author), Beuker, R.J. (author), Brugman, E. (author), Roede, M.J. (author), Verloove-Vanhorick, S.P. (author), Wit, J.M. (author)
Since 1858, an increase of mean stature has been observed in the Netherlands, reflecting the improving nutritional, hygienic, and health status of the population. In this study, stature, weight, and pubertal development of Dutch youth, derived from four consecutive nationwide cross- sectional growth studies during the past 42 y, are compared to...
article 2000
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van Buuren, S. (author), Boshuizen, H.C. (author), Knook, D.L. (author), TNO Preventie en Gezondheid (author)
This paper studies a non-response problem in survival analysis where the occurrence of missing data in the risk factor is related to mortality. In a study to determine the influence of blood pressure on survival in the very old (85+ years), blood pressure measurements are missing in about 12.5 per cent of the sample. The available data suggest...
article 1999
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Boshuizen, H.C. (author), Izaks, G.J. (author), van Buuren, S. (author), Ligthart, G.J. (author), TNO Preventie en Gezondheid (author)
Objective: To determine whether the inverse relation between blood pressure and all cause mortality in elderly people over 85 years of age can be explained by adjusting for health status, and to determine whether high blood pressure is a risk factor for mortality when the effects of poor health are accounted for. Design: 5 to 7 year follow up of...
article 1998
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de Maat, M.P.M. (author), Arnold, A.E.R. (author), van Buuren, S. (author), Wilson, J.H.P. (author), Kluft, C. (author), Gaubius Instituut TNO (author)
Elevated plasma fibrinogen levels are associated with an increased risk for cardiac events. Ticlopidine is a drug that inhibits the ADP-induced aggregation of blood platelets and it also has been described that ticlopidine can decrease the plasma fibrinogen level in patients with vascular diseases. The mechanism of this decrease has not yet been...
article 1996
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Hirasing, R.A. (author), Reeser, H.M. (author), de Groot, R.R.M. (author), Ruwaard, D. (author), van Buuren, S. (author), Verloove-Vanhorick, S.P. (author), TNO Preventie en Gezondheid (author)
OBJECTIVE - To determine the number and duration of hospital admissions due to diabetes in children aged 0-19 years between 1980 and 1991. RESEARCH DESIGN AND METHODS - Secondary analysis of data collected by the SIG Health Care Information was based on the 9th revision of the International Classification of Diseases. The subjects were all...
article 1996
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Ruwaard, D. (author), Hirasing, R.A. (author), Reeser, H.M. (author), van Buuren, S. (author), Barker, K. (author), Heine, R.J. (author), Geerdink, R.A. (author), Bruining, G.J. (author), Vaandrager, G.J. (author), Verloove-Vanhorick, S.P. (author), TNO Preventie en Gezondheid (author)
OBJECTIVE - A nationwide retrospective study was conducted to assess the incidence of type 1 diabetes in The Netherlands among children <20 years of age in 1988-1990. The first study with a similar design covered 1978-1980. RESEARCH DESIGN AND METHODS - The capture-recapture census method was chosen for analysis of the data. A questionnaire was...
article 1994
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