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Table 1 Characteristics of 14 included studies

From: Comparison of urine and blood NGAL for early prediction of delayed graft function in adult kidney transplant recipients: a meta-analysis of observational studies

Study (y)

Design

Country

Sample type

Sample size, N

Male (%)

DGF, N (%)

Donor type (DCD/ECD,%)

Donor age, year (DGF/Non-DGF)

Donor Scr, umol/l (DGF/Non-DGF)

CIT, min (DGF/Non-DGF)

NGAL, mg/ml

(DGF/Non-DGF)

DGF definitions

Urine NGAL

 Parikh (2006) [8]

PC

USA

Urine

30

46.7

10 (33.3)

56.6

NR

NR

1176 ± 612/990 ± 336

3360 (17–5850)/ 756 (12–2500)#

Dialysis within 1 week

 Hall (2010) [9]

PC

USA

Urine

91

63

34 (37.4)

100

NR

NR

NR

1035 (95–3134)/NR

Dialysis within 1 week

 Hollmen (2011) [11]

PC

Finland

Urine

176

62.5

66 (37.5)

100

56 (9–75)/ 49 (9–75)*

64 ± 17/63 ± 21

1374 ± 216/1278 ± 222*

931 ± 715.1/NR

Dialysis within 1 week

 Kanter (2013) [21]

PC

Spain

Urine

38

52.6

15 (39.5)

37.5

54 ± 12/43 ± 14

NR

1038 ± 342/1044 ± 228

275 (152–634)/92 (51–444)

Dialysis within 1 week

 Fonseca (2013) [14]

PC

Spain

Urine

40

65.0

18 (45.0)

7.5

51 ± 13/51 ± 10

75 ± 19/69 ± 14

912 ± 468/576 ± 438

834 (510–2632)/80 (29–138)

Dialysis within 1 week

 Cui (2015) [17]

PC

China

Urine

123

68.3

21 (17.1)

100

NR

NR

720 (600–840) /600 (540–780)

657 (299–1624)/38 (11–120)

Dialysis within 1 week or Scr decreased by < 10% per day

 Lacquaniti (2016) [18]

PC

Italy

Urine

29

58.6

22 (75.9)

100

64 ± 8/25 ± 13*

115 ± 61/71 ± 18*

966 ± 246/456 ± 90*

136 ± 93/47 ± 40

Dialysis within 1 week or Scr decreased by < 10% per day

 Nieto-Rios (2016) [19]

PC

Clombia

Urine

79

55.7

13 (16.5)

100

27 (24–42)/26 (19–41)

71 (60–85)/71 (53–97)

1092 ± 402/852 ± 329*

NR/NR

Dialysis within 1 week or Scr decreased by < 10% per day

 Summary

606

59.1

199 (32.8)

82.4

53.6/41.2

75.9/66.5

1121.2/907.7

Blood NGAL

 Bataille (2011) [10]

PC

France

Plasma

41

63.4

15 (36.6)

95.1

43 (42–51)/55 (39–63)

126 (86–150)/80 (50–90)

735 (575–797)/889 (662–1020)

571 (467–634)/242 (158–199)

Dialysis within 1 week

 Lee (2012) [13]

RC

Korea

Serum

59

59.3

14 (23.7)

52.5

45 ± 11/41 ± 11

NR

337 ± 132/311 ± 107

490 (238–723)/184 (145–233)

Dialysis within 1 week or pathologic findings

 Kusaka (2012) [12]

RC

Japan

Serum

67

71.6

13 (19.4)

41.8

47 (15–69)/54

NR

556 (162–972)/310

NR/757 ± 58

Dialysis within 1 week

 Hollmen (2014) [15]

PC

Finland

Serum

176

62.5

66 (37.5)

100

56 ± 12/49 ± 15*

64 ± 17/63 ± 21

1374 ± 216/1278 ± 222*

588 ± 190/355 ± 166

Dialysis within 1 week

 Cantaluppi (2015) [16]

PC

Italy

Plasma

50

42

14 (28.0)

100

65 ± 9/68 ± 7

67 ± 20/70 ± 34

985 ± 237/1032 ± 177

663 ± 97/380 ± 140

Dialysis within 1 week

 Pezeshgi (2016) [20]

PC

Iran

Plasma

37

59.5

12 (32.4)

NR

NR

NR

NR

437 ± 164/252 ± 58

NR

 Summary

430

60.9

134 (31.2)

75.9

53.2/51.8

74.2/67.0

1044.6/854.5

P value

0.846

0.885

0.330

0.892

0.339

0.936

0.423

  1. PC Prospective cohort, RC Retrospective cohort, NR not reported
  2. *P < 0.05 between DGF and non-DGF groups; # ng/mg; P value for the comparison between uNGAL studies and bNGAL studies