Table I.

Clinical characteristics of 57 patients diagnosed with primary SjS and 25 healthy volunteers.

	SjS (n = 57)	NV (n = 25)
Age, years (mean, ± SD)	53 (± 13)	48 (± 14)
Percent Female	83%	60%
Unstimulated Salivary Flow, mL/15 min (mean, ± SD)	1.30 (± 2.30)	3.39 (± 3.39)
Focus Score* (mean, ± SD)	4 (± 4)	0 (± 1)
Schirmer’s test, mm/5 min (mean, ± SD)	5 (± 7)	14 (± 11)
Anti-SSA positive by ELISA† (%)	72	0
Anti-SSB positive by ELISA† (%)	46	0
RF positive‡ (%)	60	8
ESR, mm/h (mean, ± SD)	27 (± 26)	16 (± 13)
Serum IgG, mg/dL (mean, ± SD)	1640 (± 857)	1162 (± 291)

^*Minor salivary gland biopsy and focus score data was available for all subjects. A focus score of 1 or greater is needed to show histopathological evidence of Sjögren’s syndrome.;

^†Anti-SSA and SSB reference (0–19 EU).;

^‡Rheumatoid Factor reference (< 20 IU/mL).