Proportional age-adjusted incidence of thyroid cancer differed by age and sex in Vermont, 1994–2007. Significant trends were identified for females (A) younger than 30 years of age (1994–1996), females aged 30–59 years old (1994–2007), females older than 59 years old (2006–2007), and males (B) younger than 30 years of age (1997–2007) by Ljung-Box Q analysis in JMP® Pro v10.0.0 (p<0.05, n=14).