Lea Glover MPH 504
Descriptive and Analytic Epidemiology
Case Assignment #3
Dr. Sharon Nazarchuk
Descriptive epidemiology is defined as the study of the amount and distribution of disease within a population by person, place, and time. Descriptive epidemiology answers the following questions: Who is affected? Where and when do cases occur? It describes cases by person, place, and time (TUI University 2008).
Descriptive epidemiology focuses on both the pattern of health events as well as on their frequency in popuations. Within the field of epidemiology, there are three types of data that are necessary for describing the patterns of health and disease in human populations. These three pillars of descriptive epidemiologic analysis are Person, Place, and Time.
Described data by person, place, and time
Lyme disease is an acute inflammatory disease characterized by a rash with joint swelling and fever caused by bacteria carried by the bite of tick. Symptoms include a rash followed by fever, joint pain, and headaches, affects the nervous system and heart. During 1992--1998, data regarding reported cases of Lyme disease included county and state of residence, age, sex, and date of onset. Person characterisitics include socio-dempgraphic characteristics such as age, gender and healthcare services. Information regarding age was available for 86,425 reported cases. The median age was 39 years ranging from ages 1-100 years. The highest reported incident occurred in children aged 5-9 years and adults 40-45 years. Crude mean was 4.8/100,000 male and 4.3/100,000 females. For children and adolescents aged 5-19 years, and adults aged less than or equal to 60 years, reported higher among males. For all other groups, reported incidence was approximately equal among males and females. Gender. The reported incidence is higher for females than for males. The gender...