Analysis of incidence trend of thyroid cancer in Baoshan District, Shanghai from 2000 to 2022

Abstract

Objective To provide a scientific basis for the prevention and control of thyroid cancer by analyzing the incidence characteristics and trends of thyroid cancer in Baoshan District, Shanghai from 2000 to 2022. Methods The thyroid cancer incidence data from the Shanghai Cancer Registry Reporting System from 2000 to 2022 were used to analyze the incidence of thyroid cancer among registered residents of Baoshan District. Indices such as crude incidence rate, age-standardized incidence rate (ASIR), cumulative incidence rate for ages 0-74, truncated rate for ages 35-64, and age-specific and gender-specific incidence rates were calculated using Excel 2013.Joinpoint 5.0.2.0 software was used to calculate the annual percentage of change (APC) and average annual percentage of change (AAPC), and to conduct trend analysis. Results Between 2000 and 2022, a total of 6 877cases of thyroid cancer were monitored and recorded in Baoshan District,with an average annual incidence rate of 33.38/100 000(ASIR of 28.77/100 000), among which the incidence rate for males was 17.54/100 000 (ASIR of 15.40/100 000), and for females was 49.87/100 000 (ASIR of 43.05/100 000);the cumulative incidence rate for the 0-74 age group was 2.16%;and the truncated rate for the 35-64 age group was 64.07/100 000. The ASIR of thyroid cancer showed an overall upward trend over the 23 years, with an AAPC of 14.51% (P<0.001). It increased rapidly from 2000 to 2017, with an APC of 20.79% (P<0.001), followed by a stabilization phase from 2017 to 2022, with an APC of -4.50% (P=0.146). The incidence rate of thyroid cancer reached two peaks in in the 30-34 and 55-59 age groups, with the incidence rates of 45.37/100 000 and 52.12/100 000, respectively. The incidence trend of all age groups showed that the average increase rate was the highest between 20 and 44 years old, with an AAPC of 17.02% (P<0.001). Conclusions The incidence of thyroid cancer in Baoshan District of Shanghai presentes a shift from a rapid to a stable trend, yet it remains at a relatively high level. There is a need for further investigation into the causes of the high incidence of thyroid cancer. The age groups of 30-34 and 55-59 should be particularly emphasized as key focus populations, and targeted prevention strategies must be developed to mitigate their risk.

Keywords

• |thyroid cancer|incidenc rate|annual percent change|incidence trends