If you are going to use websites as sources in research (and I highly recommend that you do not without a very good reason), make sure that the information presented is good and reliable. To do this, you need to evaluate the source. Here are some things to consider when evaluating a source:
Pennsylvania Department of Health
Pennsylvania Health Statistics
Centers for Disease Control (CDC)
National Center for Health Statistics
CDC Data & Statistics
World Health Organization
Pennsylvania Health Statistics
Contains health statistics for Pennsylvania
County Health Profiles for Pennsylvania
Contains health statistics by county
Income, Poverty, and Health Insurance Coverage in the United States, 2017