Lecture 3 - Health Measures II Flashcards
What are the four characteristics of surveillance
timeliness, representation, sensitivity, specificity
Define proportionate mortality
what proportions of death in a nation are from a certain cause
What is the equation for proportionate mortality?
of ppl in a pop that die from the disease/ # of people in pop that die in general x100
Define absolute mortality
the # of deaths that occur from a disease
Of the people that had the disease, how many died from it?
case fatality rate
What is the equation for case fatality rate?
of deaths in disease people/# of diseased people x100
How do you calculate the # of deaths from a disease in a specific pop?
make absolute mortality a decimal and multiply by population
What is the equation for crude mortality rate?
of deaths/total population at risk
What is the flaw of crude mortality rate?
age is positively correlated with death
What is the equation for SMR?
observed # of deaths per year/ expected # of deaths per year
What is the equation for mortality rate?
of deaths from all causes in a year/ # of people in pop at mid year
What is timeliness
effective control measures
what is representation
accurate picture of temporal trend of disease
what is sensitivity
identify diseased persons
what is specificity
exclude non diseased persons
