Table 2

Mean serum T3, T4, and TSH among the groups

GroupsnT3 (ng/ml)T4 (mg/dl)TSH (mIU/ml)
Values are mean (SD).
F, female; M, male; PSS, primary Sjögren’s syndrome; RA, rheumatoid arthritis; SSS, secondary Sjögren’s syndrome, TSH, thyroid stimulating hormone; T3, tri-iodothyronine; T4, thyroxine.
PSS53130 (24)9.7 (2.5)1.48 (1.14)
RA30130 (38)9.8 (1.8)1.61 (1.10)
SSS12136 (28)10.1 (2.3)1.48 (1.14)
Healthy53135 (22)9.4 (1.7)1.56 (0.68)