Characteristics of the studies included in the meta-analysis for the summarized prevalence of SCH in T2DM patients.

a, Mean ages were expressed in mean ± SD or mean. b, These original articles did not provide the mean age of the total population, so age data was extracted according to the age characteristics mentioned in the articles included. c, adjusted pooled prevalence. Abbreviation: F, female; M, male; C, subjects without SCH; S, subjects with SCH; TSH, thyroid stimulating hormone; CC, case control study; CSS, cross-sectional study. Characteristics of the studies included in the meta-analysis for the summarized prevalence of SCH in T2DM patients.