Clinical and laboratory parameters IL-17F (pg/mL) IL-17A (pg/mL) Presence Absence Presence Absence Lymphadenectasis 12.68 (8.69, 20.08) ( ) 13.09 (10.00, 21.54) ( ) −0.519 0.604 9.13 (7.88, 13.38) ( ) 9.75 (8.51, 10.36) ( ) −0.268 0.789 Splenomegaly 12.68 (9.22, 22.69) ( ) 13.09 (9.60, 20.26) ( ) 0.164 0.87 9.75 (9.13, 11.59) ( ) 9.44 (7.88, 10.36) ( ) 1.618 0.106 Joint involvement 14.89 (9.87, 22.81) ( ) 12.68 (9.73, 19.98) ( ) 0.581 0.561 7.88 (7.88, 9.13) ( ) 9.75 (8.51, 10.98) ( ) −2.443 0.015 Lung involvement 12.81 (10.00, 19.42) ( ) 13.22 (9.47, 27.27) ( ) −0.525 0.6 9.44 (8.51, 10.59) ( ) 9.75 (7.88, 10.98) ( ) −0.091 0.927 WBC ≤ 3.5 × 109 /L 17.13 (9.60, 34.15) ( ) 12.68 (9.73, 19.42) ( ) 1.535 0.125 9.75 (9.13, 11.36) ( ) 9.13 (7.88, 10.67) ( ) 1.128 0.259 Neutrophils ≤ 1.8 × 109 /L 15.16 (8.69, 27.27) ( ) 12.68 (10.00, 19.42) ( ) 0.521 0.602 9.75 (8.51, 10.97) ( ) 9.44 (7.88, 10.90) ( ) 0.386 0.998 RBC ≤ 3.5 × 1012 /L 13.23 (9.47, 28.07) ( ) 12.95 (10.00, 18.85) ( ) 0.747 0.455 9.44 (7.88, 10.51) ( ) 9.75 (7.88, 11.21) ( ) −0.679 0.497 Hb ≤ 110 g/L 12.14 (8.95, 17.99) ( ) 13.77 (9.87, 28.88) ( ) −1.315 0.189 9.75 (7.88, 10.98) ( ) 9.59 (7.88, 10.51) ( ) 0.199 0.843 PLT ≤ 100 × 109 /L 12.95 (9.47, 22.07) ( ) 13.22 (10.00, 20.26) ( ) −0.363 0.718 9.13 (7.88, 10.51) ( ) 9.75 (8.11, 10.98) ( ) −0.183 0.855 IgA ≥ 4.5 g/L 13.77 (10.00, 29.61) ( ) 12.68 (9.47, 19.70) ( ) 0.353 0.725 9.75 (7.88, 11.59) ( ) 9.59 (7.88, 10.36) ( ) 0.927 0.362 IgG ≥ 16 g/L 15.44 (10.00, 27.44) ( ) 12.14 (9.21, 17.14) ( ) 2.06 0.039 9.13 (7.88, 10.98) ( ) 9.75 (8.19, 10.36) ( ) −0.59 0.555 IgM ≥ 3 g/L 14.05 (10.13, 27.77) ( ) 12.68 (9.47, 19.42) ( ) 0.722 0.471 10.67 (9.13, 11.59) ( ) 9.44 (7.88, 10.36) ( ) 1.928 0.054 C3 < 0.78 g/L 14.33 (11.60, 22.69) ( ) 12.14 (9.47, 19.42) ( ) 1.158 0.247 9.75 (8.82, 11.59) ( ) 9.13 (7.88, 10.67) ( ) 1.586 0.113 C4 < 0.17 g/L 14.88 (12.14, 29.61) ( ) 11.60 (8.95, 18.99) ( ) 2.525 0.012 9.75 (9.13, 11.59) ( ) 9.44 (7.88, 10.36) ( ) 1.816 0.069 ESR ≥ 20 mm/h 13.49 (10.00, 22.90) ( ) 12.68 (9.47, 19.98) ( ) 0.522 0.603 9.75 (7.88, 11.51) ( ) 9.44 (7.88, 10.36) ( ) 0.996 0.321 RF ≥ 20 IU/mL 18.27 (11.06, 32.07) ( ) 10.53 (8.44, 13.77) ( ) 4.407 <0.001 9.75 (8.19, 11.59) ( ) 9.13 (7.88, 10.06) ( ) 2.637 0.01 Anti-SSA ≥ 200 RU/mL 14.88 (10.00, 25.03) ( ) 10.53 (8.69, 16.71) ( ) 2.375 0.018 9.59 (8.04, 10.36) ( ) 9.75 (7.88, 11.59) ( ) −0.03 0.976 Anti-SSB ≥ 20 RU/mL 21.00 ± 19.95 ( ) 19.80 ± 21.39 ( ) 0.304 0.762 9.95 ± 4.16 ( ) 10.73 ± 3.77 ( ) −1.019 0.311 ANA ≥ 1 : 320 14.88 (10.00, 29.61) ( ) 11.06 (9.47, 18.27) ( ) 2.132 0.033 9.44 (8.35, 11.13) ( ) 9.44 (7.88, 10.36) ( ) 0.29 0.772 ESSDAI ≥ 5 14.60 (10.53, 22.27) ( ) 10.53 (8.95, 19.42) ( ) 2.109 0.035 9.44 (7.88, 10.98) ( ) 9.75 (7.88, 10.36) ( ) 0.021 0.983