Yes.We do include vaccinated population from population at risk calculating cumulative incidence.
example for cumulative incidence(Risk)...... Number of new cases/Population at risk 28 patient in two years/1000 person at risk which means 2.8% the IR for the same example 14 patient / 1 year
prevalencerefers to the number of cases of disease thatexistsin a population and the incidence refers to the number of new cases of diseaseoccurringin a population.
# of new cases of a specified disease in a population / population at risk for getting the disease
The angle of incidence
explain bus incidence matrix.
Cumulative incidence is a measure of frequency, as in epidemiology where it is a measure of disease frequency during a period of time. Cumulative incidence is the incidence calculated using a period of time during which all of the individuals in the population are considered to be at risk for the outcome. It is sometimes referred to as the incidence proportion or the attack rate. Cumulative incidence is calculated by the number of new cases during a period divided by the number of people at risk in the population at the beginning of the study. Cumulative incidence is a measure of frequency, as in epidemiology where it is a measure of disease frequency during a period of time. Cumulative incidence is the incidence calculated using a period of time during which all of the individuals in the population are considered to be at risk for the outcome. It is sometimes referred to as the incidence proportion or the attack rate. Cumulative incidence is calculated by the number of new cases during a period divided by the number of people at risk in the population at the beginning of the study.
example for cumulative incidence(Risk)...... Number of new cases/Population at risk 28 patient in two years/1000 person at risk which means 2.8% the IR for the same example 14 patient / 1 year
Cumulative incidence pertains to diseases and the way to measure the frequency during a specific time period. It is also called incidence proportion.
CI(t)=1-e-IR(t)*D
RD=Re-Ru Rate Difference=Rate of exposed group-Rate of unexposed group.
prevalencerefers to the number of cases of disease thatexistsin a population and the incidence refers to the number of new cases of diseaseoccurringin a population.
Europe
120/100000 population
onset /prevalence/
# of new cases of a specified disease in a population / population at risk for getting the disease
# of new cases of a specified disease in a population / population at risk for getting the disease
Actually, the incidence of mentally ill people becoming violent are about the same as the incidence in the general population.