Thyroid cancer–associated deaths were seen most in people older than 70 years and showed a slightly increasing trend (high SDI, EAPC: −1.1; 95% CI, −1.2 to −0.9; high middle SDI, EAPC: −0.5; 95% CI, −1.1 to 0.2; middle SDI, EAPC: −0.2; 95% CI, −0.6 to 0.3; low-middle SDI, EAPC: −0.2; 95% CI, −0.7 to 0.3; low SDI, EAPC: −0.6; 95% CI, −0.9 to −0.3) (average annual percentage change, 0.10; 95% CI, 0.01-0.21; P <.05), followed by age 50 to 69 years (eFigure 19 in the Supplement ).
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