1991-1996 MSc in Biometrics (cum laude) at Wageningen Agricultural University.
1996 teaching assistant at Wageningen Agricultural University, Department of Mathematics.
1996-2000 PhD in statistics at Maastricht University, Department of Methodology and Statistics. Title thesis: Design and analysis of multilevel intervention studies.
2000 visiting fellow at University of California at Los Angeles, Department of Biostatistics.
2000-2001 postdoc at National Institute of Public Health and the Environment (RIVM).
2001 assistant professor at Utrecht University, Department of Methodology and Statistics.
2003 member of the Interuniversity Graduate School of Psychometrics and Sociometrics (IOPS).
2003 awarded a research grant from the Netherlands Organisation for Scientific Research (NWO) for young excellent researchers (VENI grant; 200.000 Euros). Project title: Powerful and cost-efficient designs for multilevel and longitudinal intervention studies in the social sciences.
2006 awarded a grant from the Netherlands Organisation for Scientific Research (NWO) to hire a PhD student for five years (NWO-Open Competition; 200.000 Euros). Project title: Robustness issues for cluster randomized trials.
2008 awarded a grant from the Netherlands Organisation for Scientific Research (NWO) for excellent researchers (VIDI grant; 600.000 Euros). Project title: Improving statistical power in studies on event occurence by using an optimal design.
2009 Aawarded a grant from Nijmegen Centre for Evidence Based Practice (Radboud University Nijmegen Medical Centre) to hire a PhD student. Project title: Improved methods for studies that compare the well-being of groups (‘clusters’) of elderly when there are only few clusters.
2009 associate professor at Utrecht University, Department of Methodology and Statistics.
2009-now Joint organizer of the biennial International Conference on Multilevel Analysis.
2011 Joint organizer of a symposium on “Cost-efficient and optimal designs for social and biomedical sciences”. This symposium is financed by the Royal Netherlands Academy of Arts and Sciences. Joint organization with prof. dr. Martijn P.F. Berger and dr. G.J.P. van Breukelen, Maastricht University.
2012 Registration Biostatistician, Biometrical section, Netherlands Society for Statistics and Operations Research.
2013 Academic editor PLOS-ONE.
2014 Chair of the local organization committee VI European Congress of Methodology. Large-scale conference with about 350 participants.
2015 Member scientific organization committee 36th Annual conference of the International Society of Clinical Biostatistics.
2016. Member scientific organization committee VI European Congress of Methodology
2016 General secretary executive committee European Association of Methodology
2017 Methodological reviewer Tijdschrift voor Psychiatrie
2018 Member scientific organization committee VII European Congress of Methodology
2021 Member scientific organization committee VIII European Congress of Methodology
2021 Vice president European Association of Methodology
2022 awarded a grant from the Netherlands Organisation for Scientific Research (NWO) to hire two PhD students (NWO-Open Competition; 574K Euros). Project title: Bayesian sample size calculation for trials with multilevel data.
2023 President European Association of Methodology
