General Knowledge Quiz

The proportion of a population that has a disease at a specific point in time. Calculated by dividing the total number of cases by the population at that time.

The proportion of a population that develops a disease over a specific time period. Calculated by dividing the number of new cases in the time period by the population at risk at the beginning of the period.

Another name for Cumulative Incidence, representing the proportion of a population that develops a disease within a specified time period.

Measures the rate at which new cases of a disease occur in a population over a specific time period. Calculated by dividing the number of new cases by the total person-time of observation.

The ability of a test to correctly identify those with the disease. Calculated as the number of true positives divided by the sum of true positives and false negatives.

The ability of a test to correctly identify those without the disease. Calculated as the number of true negatives divided by the sum of true negatives and false positives.

Individuals who truly have the disease but test negative on a particular test.

The majority of disease cases come from those at low risk, while a smaller number come from those at high risk. However, public health efforts often focus heavily on high-risk groups, neglecting the broader population.