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Table 3 Distribution of eGFR and SUA levels before and after frequency matching in the current study

From: Gender-related differences in clinicopathological characteristics and renal outcomes of Chinese patients with IgA nephropathy

Variables

Males

 

Females

P-value

 

n = 417

 

n = 571

 

Before matching

(n = 988)

eGFR (mL/min/1.73 m2)

 

80.8 (42.9, 107.4)

 

111.3 (71.9, 133.7)

< 0.001

eGFR group (n[%])

< 60.0

139 (33.3)

< 60.0

95 (16.6)

< 0.001

 

60.0–89.9

112 (26.9)

60.0–89.9

98 (17.2)

 
 

≥90.0

166 (39.8)

≥90.0

378 (66.2)

 

SUA (μmol/L)

 

405 (343, 492)

 

295 (239, 373)

< 0.001

SUA group (n[%])

< 316

77 (19.4)

< 271

214 (40.3)

< 0.001

 

316–419

145 (36.6)

271–359

166 (31.3)

 
 

420–524

100 (25.3)

360–449

99 (18.6)

 
 

525–629

56 (14.1)

450–539

36 (6.8)

 
 

≥630

18 (4.5)

≥540

16 (3.0)

 

Hyperuricaemia (n [%])

 

174 (43.9)

 

148 (27.9)

< 0.001

After matching

(n = 678)

  

n = 329

 

n = 349

 

eGFR (mL/min/1.73 m2)

 

88.8 (59.0, 115.3)

 

91.1 (61.0, 118.2)

0.353

eGFR group (n [%])

< 60.0

84 (25.5)

<60.0

83 (23.8)

0.812

 

60.0–89.9

83 (25.2)

60.0–89.9

86 (24.6)

 
 

≥90.0

162 (49.2)

≥90.0

180 (51.6)

 

SUA (μmol/L)

 

400.0 (332.0, 469.0)

 

328.0 (289.0, 404.0)

< 0.001

SUA group (n [%])

< 316

67 (21.3)

< 271

59 (17.8)

0.601

 

316–419

118 (37.5)

271–359

143 (43.2)

 
 

420–524

88 (27.9)

360–449

86 (26.0)

 
 

525–629

33 (10.5)

450–539

32 (9.7)

 
 

≥630

9 (2.9)

≥540

11 (3.2)

 

Hyperuricaemia (n [%])

 

130 (41.3)

 

126 (38.1)

0.422

  1. eGFR estimated glomerular filtration rate, SUA serum uric acid
  2. SUA group intervals were equal to one-fourth of the normal SUA levels of the different genders