Table 1. Saliva immune parameters of primary Sjögren's syndrome patients (N=138) and normal controls (N=100).

Immune parameters (pg/mL)	Patients*	Normal controls*	P†
IL-6	14.23 ± 14.77	9.87 ± 7.32	0.012
IL-17A	4.14 ± 2.73	4.38 ± 3.19	NS
TNF-α	4.13 ± 2.99	3.49 ± 2.20	0.091
RF-IgA	1.31 ± 1.40	1.52 ± 1.49	NS

^*Summarized as mean±SD; ^†Calculated using a t-test.

Abbreviations: IL-6, interleukin-6; IL-17A, interleukin-17A; TNF-α, tumor necrosis factor-alpha; RF-IgA, rheumatoid factor-immunoglobulin A; NS, non-significant.