What type of trend rises/declines gradually over long period using plotted raw data?
How do you calculate cumulative incidence?
1/1000 = (# new cases during a period / # at risk for developing dz during that period) x 1000
How do you calculate prevalence?
P= # with disease at point in time / # at risk at that time
What is the the calculation to look at the relationship between prevalence and incidence?
P = I x duration of disease
What are the 3 steps in spatial distribution?
data visualization (mapping)
data description (cluster analysis)
What type of mapping is used to provide info on locality and shows how dz moves through a country?
What type of map requires computer software to enter each case based on its location?
What type of map requires computer software to shade areas to show which areas are affected more often?
What is the measure of disease in time and space to identify geographical clustering of disease and define endemic, epidemic, etc. based on time:location to decide is the occurrence is enough for concern?
data description/cluster analysis
What type of modeling is used to test hypothesis and plan health policies?
What are 3 causal factors that should be taken into account?