vital statistics.pdf

 Vital statistics Dr/ Safaa Rabea Osman Vital statistics is concerned with vital events of human life (births, deaths and morbidity). Registered data are used for calculation and presentation of vital rates which are indices (indicators) of : Health status of the population, especially vulner...

 Vital statistics Dr/ Safaa Rabea Osman Vital statistics is concerned with vital events of human life (births, deaths and morbidity). Registered data are used for calculation and presentation of vital rates which are indices (indicators) of : Health status of the population, especially vulnerable groups. Community development including socioeconomic features, which influences health (e.g., education, culture, nutritional status, and environment). Effectiveness (efficiency and utilization) of health services. Birth Rate: Definition: Birth rate is the number of live births per 1000 population of a certain locality (or country) and year. No. of live births in a certain locality and year Birth rate =----------------------------------------------- X 1000 Midyear population of the same locality and year Fertility Rates : Definition: It is the number of live births per 1000 married women of childbearing age in a certain locality and year. It is a valuable index of fertility being calculated for married not all females in childbearing period. General fertility rate (GFR) : Definition : it is the number of live births per 1000 females of childbearing period in a certain locality (or country) and year. Childbearing period is 15 – 44, or 15 – 49 years old. No. of live births in certain locality and year GRF =____________________________ X 1000 No. of females in childbearing period of same locality and year Age-specific Fertility Rate : it is "total fertility of a particular age group“ Childbearing period (15 – 49) includes seven 5-year age groups. The total fertility of the such seven age groups is the number of live births born to1000 females of this group in a given locality and year. Total fertility of all females in childbearing period = sum of total fertility of the seven 5-year age groups. Prevalence rate : Prevalence is the frequency of existing cases in a defined population at a given point in time. Prevalence rate (P) of a disease is calculated as follows : Number of people with the disease or condition at a specified time P=___________________________________× 10n Number of people in the population at risk at the specified time Incidence rate : The incidence of disease represents the rate of occurrence of new cases arising in a given period in a specified population. Incidence rate (I) is calculated as follows: Number of new events in a specified period I=_______________________________ (×10n) Number of persons exposed to risk during this period Case-fatality Rate : It is the number of deaths of a particular disease per 100 cases in a certain locality (or country) and year. No. of deaths of a particular disease in certain year and locality Case fatality rate =_______________________  100 No. of reported cases of this particular disease in same year and locality  Mortality rate of a particular disease is the number of deaths of disease per 100,000 population in a certain locality (or country) and year. Proportionate Death Rate : It is the percent proportion of the number of deaths of a particular disease to total deaths in a certain locality (or group of population, or country) and year. General death rate: As it represents all deaths, for all ages and causes, and not for specific group or cause. Total number of deaths of a certain locality and year Crude death rate =___________________x 1000 Midyear population of same locality and year