Table 5.

Prevalent screens, incident screens and expected numbers of screen-detected cancers by age and period.

Age group	Period	Prevalent screens	Expected cancers	Incident screens	Expected cancers
50–54	1996–2000	71,786	343	34,875	86
	2001–5	122,183	677	103,160	294
	2006–9	82,248	520	124,600	406
55–59	1996–2000	40,443	295	44,629	134
	2001–5	65,535	557	172,349	601
	2006–9	7184	70	203,030	813
60–64	1996–2000	34,571	174	37,053	108
	2001–5	47,686	269	131,226	428
	2006–9	4735	29	199,673	718
65–69	1996–2000	32,002	430	33,895	112
	2001–5	35,225	473	97,182	322
	2006–9	2615	35	128,546	426
Total		546,213	3872	1,310,218	4448