Norman is finishing his bachelor’s degree in public health. …

Norman is finishing his bachelor’s degree in public health.  For his final project, he decided to study the EXISTING rate of type 2 diabetes in his community.  He is concerned about the cost of health care due to those patients who are insulin dependent.  Also, he is worried about the NEW high infection rates in this population due to seasonal flu.  What two rates should he be using?  

Researchers investigated the exercise habits of people livin…

Researchers investigated the exercise habits of people living on planets X and Y.  The individuals on planet X exercised only 30 minutes daily and died before age 45.  The individuals on planet Y exercised 10 minutes more daily and lived to be 90.  All of the following statements are true about the study, except: 

An observational study is investigating the link between sed…

An observational study is investigating the link between sedentary habits and heart disease.  The RDN works with the participants in the study to record how much they normally eat and exercise.  They ask about other lifestyle factors such as smoking, stress, and environment.  At the end of the study, they found that people who walked more than 6,000 steps a day had lower rates of strokes. Also, people with the fewest steps had an increased risk of stroke.  What type of conclusion(s) can be drawn?