Table 1. Description of the data set used in period survival analysis, colorectal cancer patients diagnosed in 1997–2006 in Germany.

Registry	Diagnosis period included	Cases	Exclusion based on DCO or autopsy (%)	Available cases	Males (%)	Median age at diagnosis	Micr confirmed (%)
Bayern	2002–2006	31 971	17.1	26 502	56.2	70	99.9
Brandenburg	1997–2006	18 099	14.1	15 530	54.4	68	98.0
Bremen	1998–2006	4983	11.9	4392	48.1	72	98.5
Hamburg	1997–2006	10 676	17.7	8790	46.6	72	94.8
Mecklenburg	1997–2006	11 610	13.6	10 029	54.4	68	98.0
Niedersachsen	2001–2006	37 502	17.7	30 851	51.9	71	96.9
Nordrhein-Westfalen	1997–2004	15 272	8.6	13 948	50.3	71	94.7
Rheinland-Pfalz	1998–2006	4218	13.1	3665	52.8	71	96.9
Saarland	1997–2006	9774	4.1	9375	52.9	70	99.1
Sachsen	1997–2006	34 495	10.8	30 755	52.7	70	97.9
Schleswig-Holstein	1999–2006	13 487	17.3	11 159	49.9	71	99.3
Total		192 072	14.1	164 996	52.5	70	97.8