Epidemiology II: Time in Cohort Studies

This set of flashcards covers key vocabulary and concepts related to time in cohort studies as discussed in the Epidemiology II lecture.

Kaplan-Meier Table

A statistical method used to estimate survival over time in cohort studies.

Cohort Study

A research design where participants are followed over time to study health outcomes related to defined exposures.

Censoring

The process where some subjects drop out of a study, leading to incomplete data on their event times.

Survival Analysis

A statistical method used to analyze time until an event occurs, taking into account censoring.

Time Origin

The point in time at which an individual begins to be at risk for the event of interest.

Risk Set

The group of individuals who are at risk of experiencing the event at a specific time.

Attrition

Loss of participants from a study over time, which can affect the study's results.

Time Until Event

The duration it takes for an individual to experience a specific event after an exposure.

Serial Time

The total length of time an individual is observed in a study.

Event-Free

Period when individuals have not experienced the event of interest, often leading to administrative censoring.