Censored Data

Definition

Censored Data: Incomplete observation data where the event hasn’t occurred by the end of study.

• Event did not occur until end of study
• Sample unit no longer collectable before end of study

Mostly about not having enough information.

Types of Censoring

Type	Whatwe know	What we don’t know
Right censored	Survived until time $C$	If/when event occurred after $C$
Left censored	Event occurred before study	Exactly when
Interval censored	Event occurred in $\text{[}L,R]$	Exact time

Related

• Truncated Data
• Types of Censoring in Detail