About the faculty

Anna Johansson, PhD
Anna Johansson is senior biostatistician and docent in Epidemiology at the Department of Medical Epidemiology and Biostatistics at Karolinska Institutet, and guest researcher at the Cancer Registry of Norway. Anna's research interests are survival analysis, epidemiological study designs and breast cancer epidemiology. Anna has long experience in teaching survival analysis, and has been part of the faculty of the Biostat III course for many years.
Elisavet (Betty) Syriopoulou, PhD
Betty Syriopoulou is Assistant Professor of Biostatistics at the Department of Medical Epidemiology and Biostatistics at Karolinska Institutet. Betty works on survival analysis and in particular on the development and application of statistical methods for cancer registry data. Her research consists of two broad areas: understanding the determinants that drive inequalities in cancer survival; and improving the reporting and communication of complex cancer statistics. This involves extensions of causal mediation analysis and developments in life expectancy measures for summarising cancer prognosis.
Therese Andersson, PhD
Therese Andersson is Senior Lecturer in Biostatistics at the Department of Medical Epidemiology and Biostatistics at Karolinska Institutet. Therese's main research interests are survival analysis and cancer epidemiology, especially cancer patient survival. Therese has extensive experience in teaching survival analysis, and has been part of the faculty of the Biostat III course for many years.
Jiayao Lei, MBBC, PhD
Jiayao Lei is Assistant Professor of Epidemiology at the Department of Medical Epidemiology and Biostatistics, Karolinska Institutet. Her research focuses on preventive medicine, with a primary emphasis on cancer and vaccine epidemiology, particularly the prevention of human papillomavirus (HPV)-related diseases. She employs advanced methodologies, including observational studies based on electronic health records and modeling techniques, to inform and enhance preventive health programs.