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Table 1 Characteristics of the HSP-IgAN patients at diagnosis and at last follow-up

From: Validation of the absolute renal risk of dialysis/death in adults with IgA nephropathy secondary to Henoch-Schönlein purpura: a monocentric cohort study

Items

Units

At diagnosis

At last follow-up

Test; P value

Age: mean (SD)

years

38.6 (19.7)

46.8 (18.7)

 

Time interval: m(SD)

years

3.6 (8.1)

8.2 (7.2)

 

Gross Haematuria:

N (%)

29 (39.2%)

29 (39.2%)

 

Proteinuria:

    

Mean (SD):

g/d

1.29 (1.56)

0.43 (0.68)

T = −4.8; <0.0001

Median (extremes):

g/d

0.80 (0.00-10.00)

0.18 (0.00-3.66)

 

Class (g/d):

    

<0.30 or absent

N (%)

20 (27.0%)

44 (59.5%)

 

0.30–0.99

N (%)

22 (29.7%)

21 (28.4%)

X2 = 15.0; NS (0.09)

1.00–2.99

N (%)

19 (25.7%)

7 (9.5%)

 

≥ 3.00

N (%)

13 (17.6%)

2 (2.7%)

 

Proteinuria ≥1 g/d

N (%)

32 (43.2%)

9 (12.2%)

 

Hypertension: yes

N (%)

29 (39.2%)

49 (66.2%)

X2 = 24.3; <0.0001

SBP in HT + ve: m (SD)

mm Hg

140.2 (16.9)

139.5 (17.2)

 

SBP in HT-ve: m (SD)

mm Hg

128.4 (19.0)

120.2 (15.7)

 

DBP in HT + ve: m (SD)

mm Hg

84.8 (13.5)

82.9 (9.2)

 

DBP in HT-ve: m (SD)

mm Hg

75.8 (12.5)

76.6 (10.0)

 

Pathology/GOS (0–20):

    

Mean (SD)

units

7.17 (2.75)

/

 

Median (range)

units

7.00 (2–16)

/

 

GOS ≥ 8

N (%)

30 (40.5%)

/

 

GVTI indices: m (SD)

G = 3.38 (1.40)

V = 1.95 (1.06)

T = 0.87 (0.68)

I = 0.97 (0.74)

End-point/eGFR:

    

Mean (SD)

ml/mn/1.73 m2 S

82.2 (34.0)

60.0 (35.2)

T = 6.3;<0.0001

Median (extremes)

ml/mn/1.73 m2 S

85.3 (7.1-200.4)

68.7 (5.8-147.0)

 

eGFR staging:

    

Stage 1: ≥ 90

N (%)

30 (40.5%)

14 (18.9%)

 

Stage 2: 60–89

N (%)

27 (36.5%)

33 (44.6%)

 

Stage 3: 30–59

N (%)

11 (14.9%)

9 (12.2%)

X2 = 60.3; <0.0001

Stage 4: 15–29

N (%)

3 (4.1%)

2 (2.7%)

 

Stage 5: <15

N (%)

3 (4.1%)

16 (21.6%)

 

CKD-3+ (eGFR < 60)

N (%)

17 (23.0%)

27 (36.5%)

X2 = 25.5; <0.0001

Dialysis

N (%)

2 (2.7%)

15 (20.3%)

 

Death

N (%)

0 (0.0%)

4 (5.4%)

 

Dialysis/Death

N (%)

2 (2.7%)

19 (25.7%)

X2 = 6.0; =0.01

  1. Most important parameters are bolded.