Principles of Epidemiology Flashcards
Eg of rates
Infant mortality rate
Incidence
Infant mortality rate formula
(Infant deaths/Live births) X 1000
Incidence Formula
New cases/population at risk
India’s infant mortality rate
32 per thousand live births
Which state has the highest infant mortality rate and how much is it
Madhya Pradesh
48 per thousand live births
Which state has the least infant mortality rate and how much is it
Nagaland
4 per thousand live births
Examples of ratios
MMR – maternal mortality rate
Sex ratio
odds ratio
Risk ratio
Formula of maternal mortality rate
(Maternal deaths/live births) X1,00,000
India’s maternal mortality rate
113 per 1,00,000 live births
Highest maternal mortality rate in which state and how much is it
Assam
215 per 1,00,000 live births
Lowest maternal mortality rate in which state and how much is it
Kerala
43 per 1,00,000 live births
Sex ratio formula
Number of females per thousand males
Sex ratio of India as of Census 2011
940 females per thousand males
What is Prevalence
Proportion of individuals with disease
Examples of proportion
Prevalence
Mortality indicators Examples
Life expectancy Crude death rate Specific death rate Proportional mortality rate Case fatality rate
What is the life expectancy according to national health profile And what is it in India(?)
68.7 years
Crude death rate formula And what is it in India
(Deaths during one year /midyear population) X 1000
6.2 per 1000 mid year population
Growth rate formula
Crude birth rate - crude death rate
Crude birth rate in India
20 per thousand midyear population
Growth rate of India percentage
1.38%
Calculated by CBR - CDR
20-6.2 =13.8 per 1000 midyear population
What is population doubling time using growth rate percentage
70/growth rate percentage
Malthusian model
What is the limitation of crude death rate
It’s a simplest indication of mortality
It is not age/sex specific
What are the specific death rates
Age
Sex
Disease specific