RETN and hypothyroidism: There was no substantial difference in resistin levels between patients with hypothyroidism (MD = –0.31, 95% CI = –0.96–0.35, P > 0.05, I2 = 36%) and subclinical hypothyroidism (MD = 0.31, 95% CI = –0.33–0.96, P > 0.05, I2 = 0%) before and after treatment (Figures 4C, D).