Trend in lung cancer incidence among residents in Xiaogan city, 2007-2014

Objective To examine the trend in lung cancer (LC) incidence among residents Xiaogan city,Hubei province during the period from 2007 to 2014 and to provide evidences for developing lung cancer prevention and control measures.Methods Registration data on LC incidents between January 2007 through December 2014 among residents of Xiaogan city were collected and analyzed statistically using incidence number,crude incidence,Chinese population standardized incidence (CPSI),world population standardized incidence (WPSI),and annual percentage change (APC).Results During the period,the annual crude incidence of LC ranged from 31.01/100 000 to 43.79/100 000 for all the residents (from 42.08/100 000 to 58.47/100 000 for the male residents and from 17.01/100 000 to 28.34/100 000 for the female residents);the average annual crude incidence was 34.13/100 000 among all the residents.No significant change trend in yearly crude incidence of LC was observed among all the residents (APC=0.10%,95% confidence interval95%CI:-0.36% -0.56%;P>0.05) and among the male and the female residents (both P>0.05).The annual CPSI of LC fluctuated between 19.88/100 000 and 28.08/100 000 for all the residents (between 21.78/100 000 and 35.37/100 000 for the male residents and between 8.39/100 000 and 18.31/100 000 for the female residents),with a significantly upward trend among the all residents (APC=2.32%,95%CI:1.60%-3.04%;P<0.001) and among the male and female residents (both P<0.001);the annual WPSI varied from 14.14/100 000 to 19.97/100 000 for all the residents (from 8.39/100 000 to 18.31/100 000 for the male residents and from 7.68/100 000 to 16.781/100 000 for the female residents),also with a significantly upward trend among all the residents (APC=2.42%,95%CI:1.56%-3.28%;P<0.001) and among the male and female residents (both P<0.001).The age specific incidence of LC increased with the increment of age among the residents (χ²_trend=21583.215,P<0.001),with the lowest incidence for the male residents aged <40 years and for the female residents aged <35 years and the highest incidence for the male residents aged 70-74 years and for the female residents aged 75-79 years old.For the residents of 55 years old or above,the age specific incidence of LC of the males was significantly higher than that of the females across all age groups (all P<0.05).Conclusion In Xiaogan city during the period from 2007 to 2014,the Chinese and world population standardized incidence of lung cancer increased yearly among all the residents and the age specific lung cancer incidence was higher among males than among the females for the residents aged 55 years or above across all age groups.