Epidemiology Chapter 2

Listing all the data and creating a frequency table.

A bar chart used for continuous variables.

Used to display trends.

A circle that shows the proportion of cases according to several categories.

A proportion multiplied by 100.

A type of ratio in which the numberator is part of the denominator.

The value obtained by dividing one quanitity by another.

Also a type of ratio, denominator involves a measure of time.

Total number of cases of a disease or other health phenomenon being studied.

All cases of a disease within a period of time. When expressed as a proportion, refers to the number of cases of illness during a time period divided by the average size of the population.

Number of caes of illness in a group or population at a point in time divided by the total number of persons in that group or population.

Number of existing cases of a disease or health condition in a population at some designated time.

the occurrence of new disease or mortality within a defined period of observation in a specified population.

Number of new cases of a disease, or other condition, in a population divided by the total number of population at risk over a time period, times a multiplier.

Those members of the population who are capable of developing a disease or condition.

Group from which cases of a disease have been taken; also refers to the group to which the results of a study may be generalized.

Number of deats caused by a disease among those wh ohave the disease during a time period.

A summary rate based on the actual number of events in a population over given time period.

Approximates the proportion of a dpopulation that dies during a time period of interest.

Statistic referring to a particular subgroup of the population defined in terms of age, race, or sex; also may refere to the entire population but is specific to some single cause of death or illness.

Rate of morbidity or mortality in a population in which statistical procedures have been applied to permit fair comparisons across populations by removing the effect of differences in the composition of various populations.

A measure that refers to mortality divided by the population size at the midpoint of a time period times a multiplier.

the number of cases per age group of a population during a specified time period

The frequency of a disease in a gender group divided by the total numer of persons in that gender group during a time period times a multiplier.