[Tendency of the colorectal cancer in a zone of northern Spain].
BACKGROUND
The colorectal cancer incidence rates have been rapidly increasing. In order to investigate trends in colorectal cancer incidence rates we analyzed incidence data between 1992 and 2005 in the North of Spain.


METHODS
Using Joinpoint models, we evaluated the effects of time period on colon and rectal cancer incidence.


RESULTS
The analysis found a significant annual percentage of change (APC) (7.34) on female colon cancer incidence, and a significant APC (10.10) in male incidence. For incidence rectal cancer significant cohort effect was found comparing males and females.


CONCLUSIONS
Our study shows a significant continuous increase incidence ofcolon cancer in Spain. We suggest to follow monitoring of cancer incidence and assessing risk factors.
Facultad de Medicina, Universidad de Zaragoza, Callek Domingo Miral S/N 50009, Zaragoza, España. mibernal@unizar.es
Milagros
M
Bernal
Germin J
GJ
Gömez
Francisco J
FJ
Gömez
D000367:Age Factors; D000368:Aged; D003110:Colonic Neoplasms / Q000145:classification / Q000453:epidemiology; D015179:Colorectal Neoplasms / Q000145:classification / Q000453:epidemiology*; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D012004:Rectal Neoplasms / Q000145:classification / Q000453:epidemiology; D012042:Registries / Q000706:statistics & numerical data; D012044:Regression Analysis; D012307:Risk Factors; D017678:Sex Distribution; D013030:Spain / Q000453:epidemiology