Biostatistics; Epidemiology; Models, Statistical; Prognosis; Public Health; Regression Analysis; Risk Assessment; Survival Analysis
- Prognosis research
Research Area: Prognosis research in medicine aims at understanding and improving future outcomes of individuals. We work on aspects of developing, translating and applying statistical methodology in prognosis research. Co-leaders: Daniela Dunkler and Georg Heinze
- Biometrical consulting
Head: Georg Heinze
Research Area: Our biometrical consulting service supports clinical research at the Medical University of Vienna. All biostatistical aspects of study planning, preparation of study protocol, and data analysis can be discussed. See our website for details.
My primary interest is in statistical modeling in etiologic and predictive research. A focus of my methodological research is objective and reproducible variable selection. Obtaining and communicating easily comprehensible effect size measures to support individuals’ treatment decisions or to support public health recommendations is another research focus. In a former project, I explored weighted estimation in Cox regression as a means to deal with non-proportional hazards (time-dependent effects), a condition frequently occurring in medical data.
Another main interest is to apply statistical modeling approaches to the investigation of epidemiologic research questions. Currently, the focus is on prediction of cardiovascular diseases using data from the Austrian health screening programme. I investigated the role of modifiable lifestyle and dietary risk factors on the development of early chronic kidney disease in individuals with type 2 diabetes.
I take part in the STRATOS initiative (Strengthening Analytical Thinking for Observational Studies).
What I love about my profession? While as a statistician I can develop new methods and algorithms to learn from the data, as a biostatistician/epidemiologist I can apply these methods to extract important patterns and to separate ‘information’ from ‘noise’—in short to make sense of medical and public health data.
Techniques, methods & infrastructure
For routine application of all new methodological developments software implementations in standard statistical software are made publicly available at http://www.meduniwien.ac.at/user/daniela.dunkler/software.html and http://cemsiis.meduniwien.ac.at/kb/wf/software/statistische-software/.
Two risk prediction models for incidence or progression of chronic kidney disease are also publicly available at http://www.meduniwien.ac.at/nephrogene/data/riskcalc/renal_v4/renal.html. Our updated Framingham 2008 risk prediction tool for cardiovascular diseases within the next 5 years can be found at https://cvdrisk.shinyapps.io/english/.
Observational medical research critically depends on good study design, excellent data quality, appropriate statistical methods and accurate interpretation of results. In my course 'How to recognize bad research?' for researchers and consumers of research held at the MedUni Vienna, I give guidance on important statistical issues related to evidence-based medicine.
- CVD-Risk ‘Development of an Austrian Risk Prediction Model for the Assessment of the Cardiovascular Risk (2015)
Source of Funding: OeNB (Oesterreichische Nationalbank), Anniversary Fund
- Wallisch, C. et al., 2019. External validation of two Framingham cardiovascular risk equations and the Pooled Cohort equations: A nationwide registry analysis. International Journal of Cardiology, 283, pp.165–170. Available at: http://dx.doi.org/10.1016/j.ijcard.2018.11.001.
- Dunkler, D. et al., 2019. To test or to estimate? P‐values versus effect sizes. Transplant International. Available at: http://dx.doi.org/10.1111/tri.13535.
- Dunkler, D. et al., 2014. Augmented Backward Elimination: A Pragmatic and Purposeful Way to Develop Statistical Models J. Olivier, ed. PLoS ONE, 9(11), p.e113677. Available at: http://dx.doi.org/10.1371/journal.pone.0113677.
- Dunkler, D., Sauerbrei, W. & Heinze, G., 2016. Global, Parameterwise and Joint Shrinkage Factor Estimation. J. Stat. Soft., 69(8). Available at: http://dx.doi.org/10.18637/jss.v069.i08.
- Dunkler, D., 2013. Diet and Kidney Disease in High-Risk Individuals With Type 2 Diabetes Mellitus. JAMA Intern Med. Available at: http://dx.doi.org/10.1001/jamainternmed.2013.9051.