Table 3 The comparison of laboratory parameters in active stage vs non-active stage.

From: Serum growth differentiation factor 15 associates with extra-glandular manifestations and disease activity of primary Sjögren’s syndrome

 

pSS

 

Active stage

(ESSDAI ≥ 5)

Non-active stage

(ESSDAI < 5)

P value

Number

119

32

 

Gender (Female/male)

113/6

32/0

0.432

Age

54.1 ± 13.9

45.6 ± 10.3

0.001**

GDF15, pg/mL

1423 (934–2674)

821 (632–1078)

 < 0.001***

Total protein, g/L

71.8 (66.1–79.4)

76.4 (70.7–80)

0.062

Albumin, g/L

39.5 (35.6–43.1)

45.3 (43.5–47.2)

 < 0.001***

Globulin, g/L

32.8 (28.5–37.3)

30.5 (26.5–33.7)

0.035*

Albumin/Glbumin

1.2 (1–1.4)

1.5 (1.4–1.7)

 < 0.001***

C-reactive protein, mg/L

3.2 (1.9–7.7)

1.7 (1.3–1.9)

 < 0.001***

Erythrocyte sedimentation rate, mm/h

62 (34.8–94.5)

26 (17–66)

0.001**

Rheumatoid factor, IU/ ml

32.4 (20–100)

24.4 (20–86.5)

0.437

Complement fractions 4, mg/L

195 (148.5–234)

181.5 (142.5–216)

0.505

Complement fractions 3, mg/L

819 (682–962.5)

859.5 (777–932)

0.303

Immunoglobulins G, g/L

18.1 (13.5–21.9)

14.7 (13.4–18.2)

0.056

Immunoglobulins A, mg/L

3170 (2440–4205)

2885 (1925–3651)

0.165

Immunoglobulins M, mg/L

1170 (838–1560)

1295 (982–1860)

0.196

White blood cell count, × 109/L

5.5 (4.5–7.1)

5.3 (4.4–5.9)

0.164

Neutrophil count, × 109/L

3.6 (2.4–5.3)

3.1 (2.4–3.7)

0.065

Red blood cell count, × 1012/L

4.1 (3.7–4.3)

4.5 (4.3–4.6)

 < 0.001***

Haemoglobin, g/L

119 (108.5–129)

133 (124–136.5)

 < 0.001***

Platelet count, × 109/L

207.5 (150.5–257)

200 (175–264)

0.329

Positive anti-SSA antibody (%)

90.2

89.7

1.0

Positive anti-SSB antibody (%)

50.0

34.5

0.139

Antinuclear antibody positive (%)

87.5

89.7

0.932

  1. Data are presented as number of patients, mean ± standard deviation or median (interquartile range). pSS, primary Sjögren’s syndrome; GDF15, Growth differentiation factor 15; Statistical signifcance is indicated by asterisks (* p < 0.05, ** p < 0.01, *** p < 0.001).