Table 2. T-category distribution in first-time screening participants in North Rhine– Westphalia for 2005 to 2008, divided into screening-detected cancers and interval cancers (see eTable for data standardized for 10 000 participants).

	All T-categories (incl. Tx)	Tis/ T1	T2 to T4
Total tumors (first-time participants, 2005 to 2008)	9212	6276	2224
Screening-detected cancers (%)	7176 (78%)	5203 (83%)	1328 (60%)
Interval cancers (%)	2036 (22%)	1073 (17%)	896 (40%)