Table 4.

Screening and Surgery Intervals in Screen-Detected Cancers

Screen Type	No. of Cancers	Screen Delay (days)		Surgery Interval (days)		Composite Interval (days)
		Median	Range	Median	Range	Median	Range
Prevalent	9	NA*		79	20–141	NA*
Incident screen detected	13	88	6–737	79	15–184	154	27–875
Stage I/II	4	231	49–737	50	19–138	160	27–875
Stage III	9	78	6–236	96	15–184	154	68–413

Abbreviation: NA, not applicable.

^*Prevalent screen is the first screen and cannot be delayed. Calculation of composite delay for prevalent cases is not appropriate.