SHBG and hypothyroidism: The odds of hypothyroidism were 31% greater in people with SHBG levels within the second quartile than in those with SHBG levels within the first quartile (OR 1.31, 95% CI 0.46–3.72, p value = 0.612) and increased in the third and fourth quartiles (OR 1.5, 95% CI 0.54–4.22, and OR 1.65 95% CI 0.57–4.78, respectively), with poor evidence against the null hypothesis.