TPO and autoimmune thyroid disease: In particular, they found a higher prevalence of thyroid autoimmunity (in terms of anti-TPO and/or anti-TG autoantibodies more than twice as high compared to normal reference) in atopic children than in non-atopic ones (13.67% vs. 2.67%, p = 0.0016) and a significant association between thyroid autoimmunity and atopy (OR = 5.76, 95% CI 1.71–19.3).