Table 2: Clinical characteristics of SS and non-SS patients.

Item SS (n=42) Non-SS (n=34) Total (n=76)
Ocular symptoms positive 30 10 40
negative 12 24 36
Oral symptoms positive 37 13 50
negative 5 21 26
Ocular signs:
Schirmer’s I test positive 20 11 31
negative 22 23 45
Fluorescein vital staining positive 14 2 16
negative 28 32 60
Histopathology: LSGB positive 29 5 34
negative 13 29 42
Oral sign: UWSF positive 17 5 22
negative 25 29 54
Autoantibodies
Positive anti-SSA or anti-SSB or anti-RO52 antibodies positive 35 28 63
negative 7 6 13
ANA titre ≥1:160 (Speckeld pattern)
and negative anti-dsDNA and anti-Sm antibodies
positive 20 10 30
negative 22 24 46
positive anti-centromere B antibodies
and negative anti-dsDNA and anti-Sm antibodies
positive 4 0 4
negative 38 34 72
Autoimmune thyroid disease positive 9 1 10
negative 33 33 66
AECG criteria positive 31 6 37
negative 11 28 39
NIS criteria positive 41 2 43
negative 1 32 33