Difference in the Incidence Trend of Nasopharyngeal and Oropharyngeal Carcinomas in Taiwan: Implication from Age-Period-Cohort Analysis
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Key Points
This research aims to compare the incidence trends of nasopharyngeal and oropharyngeal carcinomas in Taiwan over time.
Analysis of epidemiologic data from the Taiwan Cancer Registry from 1981 to 2000.
Utilization of age-period-cohort model to assess incidence trends.
Identification of relative risk using the calendar time period of 1986 to 1990 and the 1931 to 1940 birth cohort as references.
Nasopharyngeal carcinoma incidence decreased in most age groups, more prominently in women (30%) vs. men (23%).
Oropharyngeal carcinoma incidence increased across all age groups, with a larger increase in men (391.4%) compared to women (59.2%).
Relative risk for nasopharyngeal carcinoma was 0.38 for women and 0.68 for men in the 1971 to 1980 cohort; for oropharyngeal carcinoma, it was 45.67 for men and 2.69 for women.
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Implication
Age-period-cohort analysis reveals declining nasopharyngeal and rising oropharyngeal carcinoma rates in Taiwan, suggesting lifestyle implications.