IMED2003 Final: IMED2003 Revision 47 Notes
13 Feb 2019
School
Department
Course
Professor
Document Summary
Proportion of new cases of a disease occurring in a fixed population during a specified period of time. Ci = number of new cases/total population at risk. It is the estimate of risk of developing the disease during a specified period. Assumes that the entire population at risk at the beginning of the study period has been followed for the entire specified time interval. The numerator is the number of new cases in the population over the time period. But the denominator is the sum of each individual"s time at risk. (ie, the time that each person stayed under observation and remained disease-free) Special types of incidence & prevalence measures examples: mortality rate, all cause vs disease specific mortality rate, age-specific rate, case-fatality rate, attack rate, admission rate, disease rate at autopsy, birth defect rate. All cases present during a given time period. Number of persons present in the population of interest.
