Analysis of the incidence of colorectal cancer in Qidong, Jiangsu Province from 1993 to 2012

ObjectiveTo analyze the incidence of colorectal cancer(CRC) for patients with census registration in Qidong, Jiangsu Province.

MethodsThe clinical data of CRC for patients with census registration in Qidong were sorted out from the cancer registration center in Qidong, Jiangsu province. The incidence was standardized by utilizing the standard population age composition based on the nationwide census in 2000. The annual percent change(APC) model was used to analyze the trend over time for the incidence of CRC.

ResultsA total of 4 648 new cases of CRC were diagnosed in Qidong from 1993 to 2012, of which 2 328 were male cases and 2 320 were female cases. The crude incidence rate for CRC was 23.00/100 000 and the APC for the standardized incidence rate for CRC was 14.13/100 000, with the incidence thereof for males significantly higher than that for females(P < 0.001). The incidence rate of CRC for seniors aged over 50 rose quickly. From 1993 to 2012, the average annual increase rate of the incidence for CRC was 5.1% and the average annual increase rate of the standardized incidence therefor was 5.0% in Qidong.

ConclusionThe incidence of CRC increases in Qidong on a yearly basis from 1993 to 2012, with the incidence thereof for males being significantly higher than that for females.