Professur für Volkswirtschaftslehre, insb. Sozial- und Verteilungspolitik/ Gesundheitsökonomik

Research Areas

  • Health insurance markets (Normann Lorenz)
  • Risk adjustment (Normann Lorenz)
  • Aging and health care cost (Normann Lorenz)
  • Social benefits (Normann Lorenz)
  • Digitalisation in the healthcare sector (Roman Retiene)
  • Health apps and fitness trackers (Roman Retiene)
  • Courses of care in the German statutory long-term care insurance (Tim Schwerhoff)
  • Applications of survival analysis and machine learning (Tim Schwerhoff)


Looking into the black box of “Medical Innovation”: rising health expenditures by illness type (2022, mit Friedrich Breyer, Gerald J. Pruckner and Thomas Schober). European Journal of Health Economics, forthcoming.

The “Red Herring” after 20 Years: Ageing and Health Care Expenditures (2021, mit Friedrich Breyer). European Journal of Health Economics, 22(5), 661–667.

Using quantile and asymmetric least squares regression for optimal risk adjustment (2016). Health Economics, 26(6), 724-742.

Identifying Laffer Bounds: A Sufficient-Statistics Approach with an Application to Germany (2015, with Dominik Sachs). Scandinavian Journal of Economics, 118(4), 646–665.

The interaction of direct and indirect risk selection (2015). Journal of Health Economics, 42, 81-89. (Extended version: Universität Trier Research Papers in Economics 12/14.)

Health care expenditures and longevity: is there a Eubie Blake effect? (2015, with Friedrich Breyer and Thomas Niebel). European Journal of Health Economics, 16(1), 95-112.

A contest success function with a rent-dependent dissipation rate (2014). Economics Bulletin, 34(2), 1091-1102.

Optimal Cost Reimbursement of Health Insurers to Reduce Risk Selection (2011, with Mathias Kifmann). Health Economics, 20(5), S. 532–552.

A Duration Analysis of the Effects of Tuition Fees for Long-Term Students in Germany (2006, with Martin Heineck and Mathias Kifmann). Journal of Economics and Statistics, 226(1), 82-109.

Determinants of health care utilization by German sickness fund members - with application to risk adjustment (2003, with Friedrich Breyer and Martin Heineck). Health Economics, 12(5), 367-376.

Discussion papers

Aging and Health Care Expenditures: A Non-Parametric Approach, CESifo Working Paper No. 8216, (2020, mit Friedrich Breyer und Peter Ihle).

Using quantile regression for optimal risk adjustment. Universität Trier Research Papers in Economics 11/14, (2014).

Adverse selection and heterogeneity of demand responsiveness. Universität Trier Research Papers in Economics 2/14, (2014).

Adverse selection and risk adjustment under imperfect competition, (2014). (Earlier version: Universität Trier Research Papers in Economics 05/13, (2013)).

Optimal Participation Taxes and Efficient Transfer Phase-out. Universität Konstanz Diskussionspapier, (2012, with Dominik Sachs).