Measurements of Mortality..Epidemiology

Measurements of Mortality:

Mortality is because of disease and death is because of any other reason. Mortality rate(MR) is calculated by the following formula;

MR= total no. of deaths from any disease/ total population at risk

Infants are the children under 1 year of age.

Neonates are the infants under 28 days of age.

Postneonats are the infants from 28days to 1 year of age.

Perineonates are the infants under 7 days of age.

Fetal death/ still birth are death of fetus from 28^th week of gestation uptill birth.

Infants Mortality Rate:

IMR = no. of infants died / no. of live births

Neonatal Mortality Rate:

NMR = no. of infants death under 28 days of age/ no. of live births.

Postneonatal Mortality Rate:

PNMR= no. of infants deaths from 28days to 1 year of age/ no. of live births

Perineonatal Mortality Rate:

Peri NMR = no. of deaths under 7 days of age+ still births/ no. of live births+still births

Crude Death Rate:

It includes deaths from all the reasons.

CDR = total deaths from all reasons/ population at risk

Age Specific Death Rate:

ASDR = total deaths under particular age / population at risk under that particular age.

Gender Specific Death Rate:

GSDR = total deaths in a gender / population at risk under that particular gender.

Proportionate Mortality Rate (PMR):

PMR = no. of deaths from particular disease / total deaths.

Note:

Place, time and constant factor are included in all the formulas.