Topic 2: Calculating BOD, Death Data Flashcards
Name some aspects of a population that might tell us about whats happening in a population? (3)
- Births
- Deaths
- Migration
Name sources of population data?
Census, death registries, population registries
What are the benefits of census data?
Large study, covers lots of people, widely available data
What are the limitations of census data?
May miss some people (access issues etc).
Large and expensive so are only valid for the year they are conducted
People tend to inflate SE status, Men tend to note single on the form, women tend to report worse health. Older people tend to over report age
Heaping.
Name an important factor to take into consideration when studying the health of a population?
Age stucture of a population - 2 populations can be general the same size, but the different age structures within will give different mortality and morbidity rates
Benefits of death data?
Widely available
Routine data
Timely in general
COD - ICD 10 code which can be compared across
Limitations of death data?
Based on accuracy of diagnosis
Different COD for ages of doctors and SE status of pt
Effort put into determining COD by doctor
ICD-10 revisions and missclassification of deaths
Death registry systems may be poorly developed and rely on verbal autopsy.
Name some death rates:
Crude DR Cause Specific DR Age specific DR Infant Mort. R Perinatal DR
What do age standardized rates do?
Name 2 type of standardization?
Control death rates for age
- Direct Age standardization: A. Standardized DR/ B. Directly standardized DR.
- Indirect age standardization
When do you use Direct Age Stand.?
When you have information on the age specific MR’s of a population
AND
You have a defined standard population with known ages in each category
When do you use Indirect Age standardization?
What does it allow you to calculate (the name of the Ratio)?
When you have no age specific MR of the population under study
Allows you to calculate a SMR (standardized M Ratio)