Response to EACH question must be a minimum of 200 words:
1.Explain the concepts of lead time and critical point in epidemiology, and explain the significance in the natural history of disease.
2.Describe at least two possible study designs that can be used to evaluate health services. Discuss challenges in interpreting the results of these studies.
3.Discuss problems in assessing the sensitivity and specificity of health screening tests.
4.Distinguish measures of process from measures of outcome in health services research. Provide at least one example of each type of measure.
Reference: Gordis, L. (2014). Epidemiology (5th ed.). Philadelphia, PA: Saunders.