The Author: Jens Ulrich Hanisch was born in Lampertheim in 1973 and studied Economics at the University of Frankfurt am Main. He now works as research assistant at the Institute for Medical Informatics, Biometry and Epidemiology at the University Hospital Essen.

• Contents: Surveys contain rounded income values – Problems when using rounded values – Association of rounding behaviour with other factors in the ECHP and SOEP data.

The Author: Jens Ulrich Hanisch was born in Lampertheim in 1973 and studied Economics at the University of Frankfurt am Main. He now works as research assistant at the Institute for Medical Informatics, Biometry and Epidemiology at the University Hospital Essen.

• Contents: Surveys contain rounded income values – Problems when using rounded values – Association of rounding behaviour with other factors in the ECHP and SOEP data.

The Author: Jens Ulrich Hanisch was born in Lampertheim in 1973 and studied Economics at the University of Frankfurt am Main. He now works as research assistant at the Institute for Medical Informatics, Biometry and Epidemiology at the University Hospital Essen.

• Contents: Surveys contain rounded income values – Problems when using rounded values – Association of rounding behaviour with other factors in the ECHP and SOEP data.