Table 1

Age and sex distribution and frequency of antithyroid antibodies among the groups

GroupnF/MAge (years)Anti-TPO (%)Anti-TG (%)Both (%)Total (%)
Values are n (%) or, for age, mean (SD).
Anti-TG, autoantibodies against thyroglobulin; anti-TPO, autoantibodies against thyroid peroxidase; AIT, autoimmune thyroiditis; F, female; M, male; PSS, primary Sjögren’s syndrome; RA, rheumatoid arthritis; SSS, secondary Sjögren’s syndrome.
PSS5351/251.8 (14.8)5 (9)5 (9)4 (8)6 (11)
RA3028/251.1 (12.2)2 (7)0 (0)0 (0)2 (7)
SSS1212/057.3 (11.6)2 (17)1 (8)1 (8)2 (17)
Healthy5351/252.0 (15.4)2 (4)2 (4)0 (0)4 (8)
AIT1716/141.8 (15.8)14 (83)6 (35)4 (24)16 (94)