Epidemiology
Study of the distribution and determinants of health-related states or events (ex. disease)
& application of study to the control of diseases and other health problems
Indian Registry
People registered under the Indian Act are recognized by the federal government as having Indian status. This means only Indigenous Peoples living in Canada who are registered with the federal government will have their data recorded and counted to inform new policies.
Sovereignty
the full right and power of a governing body over itself, without any interference from outside sources or bodies.
Five “D”s of Indigenous Data Colonization
Indigenous Data Governance
canadian context
There are many cases of Indigenous governance over data.
* Example: OCAP (Ownership, Control, Access, and Possession).
Importance of access:
* Enables decisions on why, how, and by whom information is collected, used, and shared.
Incidence
Measures how quick new cases of disease rise in a population over a defined period of time
Measure of RISK
2 types: culmative, and IR
Cumulative Incidence (aka incidence proportion)
Proportion of population who develop disease over a period of time (measures risk)
culmative incidence equation
of new cases of disease over a time period /
total population at risk
Incidence Density Rate (aka Person-Time IR)
Length of time people were at risk of disease
prevalence
Tells us the number of existing cases of a disease in a given population
prevalence equation
number of cases /
total at-risk population
2 types of prevalence
1) point prevalence
2) period prevalence
Point prevalence
Has disease @ specific point in time
Rarely used
point prevalence equation
number oc ases at a specific time /
total population at that time
period prevalence
has disease at a defiend period of time
period prevalence equation
number of cases at a period to time /
average population during that period of time
Reasons for INCREASED at-risk population
Births
Immigration
Reasons for DECREASED at-risk population
High Incidence
High death rate from other causes
Emigration
Crude Mortality Rates
The count of all the deaths over a specified time period divided by the population at the midpoint of the time period being considered
Crude Mortality Rates Equation
number of deaths over a time period x 100 000 /
population at midpoint of time period
All-Cause Mortality Rate
Considers deaths for any reason in the population
Cause-Specific Mortality Rate
Measures the deaths in a population from a specific
Standardization of Mortality Rate
Compares mortality in two populations that differ in terms of characteristics that are known to influence mortality (ex. age, sex)
*age is the most common characteristic for standardizing mortality
Limitation of Standardization of Mortality Rate
In developing countries, it may be hard to obtain reliable data on population mortality because
* Many people die at home
* How people live