Figure 2. The prevalence of different thyroid diseases, anti-TPO and anti-Tg prior to the onset of homeostatic model assessment-insulin resistance (HOMA-IR) elevation compared with their respective control groups. The thyroid control group consists of subjects who had thyroid disease-parallel, thyroid disease-following and no thyroid disease to the onset of HOMA elevation. Anti-TPO control group consists of subjects who had anti-TPO-parallel, anti-TPO-following and no anti-TPO to the onset of HOMA elevation. Anti-Tg control group consists of subjects who had anti-Tg-parallel, anti-Tg-following and no anti-Tg to the onset of HOMA elevation. Tg, Thyroglobulin; TPO, Thyroid peroxidase.