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Dive into the research topics where R.J. van de Laar is active.

Publication


Featured researches published by R.J. van de Laar.


Journal of Internal Medicine | 2013

Adherence to a Mediterranean dietary pattern in early life is associated with lower arterial stiffness in adulthood: the Amsterdam Growth and Health Longitudinal Study

R.J. van de Laar; Coen D. A. Stehouwer; B.C.T. van Bussel; Martin H. Prins; J.W.R. Twisk; Isabel Ferreira

To investigate whether adherence to a Mediterranean dietary pattern during adolescence and early adulthood affects arterial stiffness in adulthood, and the extent to which any such association may be attributed to a beneficial impact of this diet on cardiovascular disease risk factors such as blood pressure, central fatness and dyslipidaemia.


Postgraduate Medical Journal | 2009

Predicting mortality of psychogeriatric patients: a simple prognostic frailty risk score

Evelien Pijpers; Isabel Ferreira; R.J. van de Laar; Coen D. A. Stehouwer; A. C. Nieuwenhuijzen Kruseman

Background and aims: Frailty and mortality in psychogeriatric patients are hard to predict but important in counselling and therapeutic decision making. We have therefore developed a simple frailty risk score to predict mortality this population. Study design: Prospective observational study including 401 community dwelling psychogeriatric patients (249 women; mean (SD) age 78.0 (6.5) years), who had been referred to a multidisciplinary diagnostic observation centre. We used Cox proportional hazards regression models to identify and select baseline characteristics for the development and validation of a risk score for the prediction of 3 year mortality. Results: A total of 116 subjects died during follow-up (median follow-up duration of 26 months). Baseline characteristics associated with mortality were: age (hazard ratio (HR) 1.44, 95% confidence interval (CI)1.02 to 2.04), male sex (HR 2.93, 95% CI 1.89 to 4.59), living alone (HR 1.53, 95% CI 0.99 to 2.38), body mass index (BMI) <18.5 kg/m2 (HR 4.09, 95% CI 2.06 to 8.14), cardiovascular disease (HR 1.42, 95% CI 0.94 to 2.15), elderly mobility score <20 (HR 1.92, 95% CI 1.24 to 2.98), number of medicines ⩾2 (HR 2.28, 95% CI 1.21 to 4.31), and impaired motor (HR 1.47, 95% CI 0.93 to 2.32) and process skills (HR 1.92, 95% CI 1.12 to 2.98) in activities of daily living. These predictors were translated into an easy-to-use frailty risk score and patients were stratified into very good (<45 points), good (45–50) moderate (51–55), poor (56–61) and very poor (>61) prognosis groups. Three year mortality rates across these groups were 8.0%, 15.9%, 25.9%, 41.5%, and 68.8%, respectively (p<0.001). The area under the receiver operating characteristic curve (AUC) of the risk score was 0.78 (95% CI 0.73 to 0.82), indicating good discriminative performance. Conclusions: We developed and validated a risk score for the prediction of 3 year mortality. This risk score can be used to stratify patients into different risk categories, thereby informing patient counselling and tailored diagnostic and therapeutic decisions in clinical practice.


Journal of Hypertension | 2014

Greater central-to-peripheral pulse pressure amplification in diabetes and obesity: the relative mediating role of arterial stiffness, heart rate and wave reflection: The CODAM study

P. Vaidya; R.J. van de Laar; M.M.J. van Greevenbroek; C.J.H. van der Kallen; C. G. Schalkwijk; Martin H. Prins; C. D. A. Stehouwer; Isabel Ferreira


Journal of Hypertension | 2014

Associations of visceral vs. subcutaneous abdominal fat with central vs. peripheral arterial stiffness and the mediating role of low-grade inflammation herein

Isabel Ferreira; P. Vaidya; R.J. van de Laar; M.M.J. van Greevenbroek; C.J.H. van der Kallen; C. G. Schalkwijk; Martin H. Prins; C. D. A. Stehouwer


Journal of Hypertension | 2011

LIFETIME FIBRE INTAKE AND ITS MAJOR DIETARY SOURCES ARE FAVOURABLY ASSOCIATED WITH ARTERIAL STIFFNESS IN YOUNG ADULTHOOD: THE AMSTERDAM GROWTH AND HEALTH LONGITUDINAL STUDY: PP.35.189

R.J. van de Laar; C. D. A. Stehouwer; B.C.T. van Bussel; S. J. Te Velde; Martin H. Prins; J.W.R. Twisk; Isabel Ferreira


Journal of Hypertension | 2011

THE CHANGE IN PULSE WAVE VELOCITY OVER THE CARDIAC CYCLE IS INDEPENDENTLY ASSOCIATED WITH LEFT VENTRICULAR MASS INDEX IN MIDDLE-AGED HEALTHY SUBJECTS: 3B.04

Evelien Hermeling; Sebastian Vermeersch; E. Rietzschel; M. De Buyzere; Thierry Gillebert; R.J. van de Laar; Isabel Ferreira; A.P.G. Hoeks; L. Van Bortel; Robert S. Reneman; Patrick Segers; Koen D. Reesink


Artery Research | 2011

Lifetime adherence to a Mediterranean diet (MD) pattern is associated with lower carotid stiffness in young adults: The Amsterdam growth and health longitudinal study

R.J. van de Laar; Coen D. A. Stehouwer; B.C.T. van Bussel; Martin H. Prins; J.W.R. Twisk; Isabel Ferreira


21st European meeting on Hypertension and Cardiovascular Prevention (ESH 2011) | 2011

The change in pulse wave velocity over the cardiac cycle is independently associated with left ventricular mass index in middle-aged healthy subjects

Evelien Hermeling; Sebastian Vermeersch; Ernst Rietzschel; Marc De Buyzere; Thierry C. Gillebert; R.J. van de Laar; Isabel Ferreira; Arnold P.G. Hoeks; Lucas Van Bortel; Robert S. Reneman; Patrick Segers; Koen D. Reesink


Artery Research | 2010

Television Time is Adversely Associated with Arterial Stiffness in Young Adults: The Amsterdam Growth and Health Longitudinal Study

R.J. van de Laar; Isabel Ferreira; W. van Mechelen; Martin H. Prins; J.W.R. Twisk; Coen D. A. Stehouwer


Artery Research | 2010

Difference between systolic and diastolic carotid artery stiffness is independently associated with left ventricular mass index in healthy middle-aged subjects

Koen D. Reesink; Evelien Hermeling; Sebastian Vermeersch; E. Rietzschel; M. De Buyzere; Thierry C. Gillebert; R.J. van de Laar; Isabel Ferreira; Arnold P.G. Hoeks; L. Van Bortel; Robert S. Reneman; Patrick Segers

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J.W.R. Twisk

VU University Medical Center

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B.C.T. van Bussel

Maastricht University Medical Centre

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