Table 1 The clinical materials of pSS patients with ILD and without ILD

Female, n (%)

27(90.0)

55(93.2)

0.684

Age (years)

57(50–67)

52(45–61)

0.034

Disease history

Diabetes mellitus, n (%)

1(3.3)

2(3.4)

1.000

Hypertension, n (%)

4(13.3)

5(8.5)

0.479

Medication use history

Glucocorticoid, n (%)

10(33.3)

18(30.5)

0.786

Immunosuppressant, n (%)

11(36.7)

21(35.6)

0.921

Complement C3 (g/L)

1.05(0.74–1.16)

0.98(0.75–1.20)

0.788

Complement C4 (g/L)

0.21(0.14–0.36)

0.22(0.14–0.27)

0.596

Immune globulin A (g/L)

2.74(2.42–3.47)

2.94(2.17–3.93)

0.979

Immune globulin G (g/L)

15.11(12.88–18.50)

17.10(13.66–21.28)

0.133

Immune globulin M (g/L)

1.20(1.00-2.10)

1.43(1.03–1.97)

0.570

 C-reactive protein (mg/L)

10.72(1.96–41.96)

6.00(1.60-20.41)

0.265

Erythrocyte sedimentation rate (mm/h)

45(21–66)

30 (12–55)

0.022

Alanine aminotransferase (U/L)

14.4(9.0–20.0)

15.0(12.0–19.0)

0.211

Aspartate aminotransferase (U/L)

18.0(15.9–23.3)

19.0(15.0–24.0)

0.941

Bilirubin (µmol/L)

6.1(4.4–9.5)

8.3(6.5–11.8)

0.010