Table 2 Laboratory findings, oral parameters, and univariate analysis of these parameters on logarithm-transformed ocular staining score

 White blood cell (/μL)

5122.56 ± 1496.99

0.000 (0.000)

0.350

 Erythrocyte sedimentation rate (mm/h)

17.09 ± 13.46

0.006 (0.005)

0.262

 C-reactive protein (mg/dL)

0.14 ± 0.33

0.138 (0.203)

0.498

 Complement C3 (mg/dL)

105.68 ± 19.71 (68^a)

0.003 (0.004)

0.471

 Complement C4 (mg/dL)

21.79 ± 8.32 (68^a)

0.005 (0.009)

0.563

 Immunoglobulin G (mg/dL)

1412.61 ± 407.95 (38^a)

0.000 (0.000)

0.124

 Anti-SSA/Ro antibody

77.2 (61/79^a)

0.274 (0.157)

0.086

 Anti-SSB/La antibody

38.6 (27/70^a)

0.504 (0.140)

0.001

 Antinuclear antibody, (≥1: 80)

63.4 (52/82^a)

0.235 (0.135)

0.087

 Rheumatoid factor

43.8 (35/80^a)

0.315 (0.132)

0.020

 Subjective oral score (0-3)

1.58 ± 0.71

0.258 (0.093)

0.007

 Non-stimulated whole salivary flow (mL/min)

0.09 ± 0.09 (79^a)

-0.122 (0.047)

0.011

 Positive results of salivary gland biopsy, % (n)

73.7 (14/19^a)

0.119 (0.293)

0.688