HSCI 130 Lecture Notes - Lecture 9: Temporality, Case Fatality Rate
26 Jan 2016
School
Department
Course
Professor
Document Summary
Incidence rates: measure of the rate of development of a disease in a population. Incidence rates are true rates (can go up or down) Denominator (bottom) represents window of time people are at risk of disease (not number of people at risk at the beginning) Reported in unit of time per 1000 person years of observation (or per 100 person years, 100,000 person years etc. ) Sometimes called force of morbidity or mortality or incidence density . For most diseases, risk does not remain constant over time varies for different time periods and age groups incidence rates let you account for person years at risk in each time period. Research on causes, prevention and treatment of disease. Number of new cases of disease during given time period. Number of person time (years/months/days) when people were at risk of developing the disease (during observation). Cause: an event condition or characteristic combination of these factors without which the disease have occurred.
