Fig. 2.

Exploratory subgroup analyses for disease-free survival by dichotomized autoantibodies to thyroid peroxidase (TPOAb). ER+, positive oestrogen receptor (ER); ER–, negative ER; HER2+, positive human epidermal growth factor receptor-2 (HER2); HER2–, negative HER2; NK, not known; N–, lymph-node negative; N1–3+, 1–3 lymph-nodes positive; N4+, 4 or more lymph-nodes positive; TPOAb+, positive TPOAb; TPOAb–, negative TPOAb; Triple negative, negative HER2, ER, and progesterone receptor; WLE, wide local excision; 95% CI, 95% confidence interval.