This course is designed to provide you the knowledge and skills in application, evaluation, analysis, and interpretation of biostatistical data used to inform public health programs, policy, and practice. Elizabeth Pisani is an epidemiologist in public health and has a message about the role that politics has on the use of the data. View Elizabeth Pisani: Sex, Drugs and HIV Lets Get Rational. Do you agree or disagree with Pisanis message about the role of politics in public health?