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J Environ Public Health. 2011;2011:850105. doi: 10.1155/2011/850105. Epub 2011 Nov 30.

Thyroid cancer incidence in New Jersey: time trend, birth cohort and socioeconomic status analysis (1979-2006).

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Cancer Epidemiology Services, New Jersey Department of Health and Senior Services, P.O. Box 369, Trenton, NJ 08625-0369, USA.


The study's purpose was to investigate thyroid cancer incidence time trends, birth cohort effects, and association with socioeconomic status (SES) in New Jersey (NJ), a high incidence state, using NJ State Cancer Registry data. Thyroid cancer incidence rates in each sex, nearly all age groups, two major histologies and all stages significantly increased between 1979 and 2006. For each sex, age-specific incidence rates began greatly increasing in the 1924 birth cohort and, generally, the highest thyroid cancer incidence rate for each five-year age group occurred in the latest birth cohort and diagnosis period. Thyroid cancer incidence rates were significantly higher in NJ Census tracts with higher SES and in counties with a higher percentage of insured residents. These results support further investigation into the relationship between rising thyroid cancer incidence and increasing population exposure to medical (including diagnostic) radiation, as well as widespread use of more sensitive diagnostic techniques.

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