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Table 1 General characteristics of the included studies for TGF-β1 levels in T2DN in this meta-analysis

From: Relationship between transforming growth factor-β1 and type 2 diabetic nephropathy risk in Chinese population

First author, year

Country

According to

Case

Control

UAER or UACR

Mean

SD

N

Mean

SD

N

Ju HB 2000

China

Normoalbuminuria

35.02

6.7

14

23.95

8.01

15

Microalbuminuria

39.31

5.35

18

23.95

8.01

15

Macroalbuminuria

58.58

9.56

13

23.95

8.01

15

Wang YJ 2002

China

Normoalbuminuria

147.03

22.57

34

136.97

37.96

35

Macroalbuminuria

170.65

18.74

31

136.97

37.96

35

Li WM 2004

China

Normoalbuminuria

58.91

11.03

46

47.25

6.22

48

Macroalbuminuria

387.45

82.06

48

47.25

6.22

48

Li ZJ 2004

China

Normoalbuminuria

146

22

36

131

36

40

Macroalbuminuria

172

19

44

131

36

40

Jiang ZL 2005

China

Normoalbuminuria

428.3

43.7

29

412.5

58.4

35

Microalbuminuria

578.5

69.4

27

412.5

58.4

35

Macroalbuminuria

683.4

84.3

28

412.5

58.4

35

Li ZZ 2005

China

Normoalbuminuria

41

15.57

27

10.04

5.33

18

Microalbuminuria

66.35

18.04

12

10.04

5.33

18

Macroalbuminuria

53.31

15.64

18

10.04

5.33

18

Zhou Y 2005

China

Normoalbuminuria

31.12

12.39

30

29.4

10.62

30

Microalbuminuria

79.63

15.96

30

29.4

10.62

30

Macroalbuminuria

136.6

21.45

30

29.4

10.62

30

Jing CY 2005

China

Normoalbuminuria

31.16

14.23

31

24.58

12.61

20

Microalbuminuria

48.2

18.3

25

24.58

12.61

20

Macroalbuminuria

62.12

21.3

23

24.58

12.61

20

Wei YS 2005

China

NR

41.57

10.55

91

25.46

7.88

105

Li HP 2006

China

Normoalbuminuria

147.02

20.57

108

131.96

3.84

120

Macroalbuminuria

170.64

17.72

132

131.96

3.84

120

Tao SP 2006

China

Normoalbuminuria

147

23

28

132

36

25

Macroalbuminuria

172

18

34

132

36

25

Meng T 2006

China

Normoalbuminuria

217.7

126

28

84.5

23.4

30

Microalbuminuria

288.2

109.4

24

84.5

23.4

30

Macroalbuminuria

345.5

118.2

22

84.5

23.4

30

Xie HF 2006

China

Normoalbuminuria

42.1

9.3

60

35.9

8.1

30

Macroalbuminuria

61.8

11.2

45

35.9

8.1

30

Qian YX 2006

China

Normoalbuminuria

146

22

48

131

36

60

Macroalbuminuria

172

19

23

131

36

60

Fu CX 2007

China

Normoalbuminuria

36.2

8.8

34

34.4

8.2

35

Microalbuminuria

69.4

12.8

31

34.4

8.2

35

Du JW 2007

China

Normoalbuminuria

179.16

13.13

20

68.47

31.75

19

Microalbuminuria

192.66

57.25

21

68.47

31.75

19

Macroalbuminuria

582.04

211.25

20

68.47

31.75

19

Zhang WJ 2007

China

Normoalbuminuria

23.35

3.7

36

20.35

3.7

40

Microalbuminuria

41.31

4.3

45

20.35

3.7

40

Macroalbuminuria

55.28

6.8

45

20.35

3.7

40

Lai X 2007

China

Normoalbuminuria

89.65

28.33

27

31.46

9.07

43

Microalbuminuria

121.02

32.36

21

31.46

9.07

43

Macroalbuminuria

211.69

69.83

17

31.46

9.07

43

Lin YH 2007

China

Normoalbuminuria

97.24

18.6

19

58.36

13.72

23

Macroalbuminuria

136.75

23.48

24

58.36

13.72

23

Zhang SF 2007

China

Microalbuminuria

21.188

20.87

15

6.99

18.57

18

Macroalbuminuria

13.64

19.44

16

6.99

18.57

18

Zhang WK 2008

China

Normoalbuminuria

23.3

10.1

30

20.3

3.7

26

Microalbuminuria

41.3

4.2

38

20.3

3.7

26

Macroalbuminuria

88.2

6.8

32

20.3

3.7

26

Wang YP 2008

China

Normoalbuminuria

35.4

7.1

44

32.5

6.8

35

Macroalbuminuria

68.2

12.5

32

32.5

6.8

35

Zhang SB 2008

China

NR

121.5

37.2

36

55.2

16.8

30

Li QX 2008

China

Normoalbuminuria

31.9

9.72

26

21.5

6.89

20

Microalbuminuria

49.6

14.78

23

21.5

6.89

20

Macroalbuminuria

70.3

26.48

18

21.5

6.89

20

Feng SJ 2008

China

Normoalbuminuria

208.2

110

25

80.62

3.4

38

Microalbuminuria

293.3

118.5

23

80.62

3.4

38

Macroalbuminuria

263.5

108.2

18

80.62

3.4

38

Zhang HM 2008

China

Normoalbuminuria

32.52

12.24

40

   

Microalbuminuria

43.61

20.37

48

   

Cao B 2009

China

Normoalbuminuria

31.2

5.6

31

17.4

3.4

30

Microalbuminuria

54.9

7.8

34

17.4

3.4

30

Macroalbuminuria

78.2

10.3

30

17.4

3.4

30

Li QX 2009

China

Normoalbuminuria

31.9

9.72

26

21.5

6.89

20

Microalbuminuria

49.6

14.78

23

21.5

6.89

20

Macroalbuminuria

70.3

26.48

18

21.5

6.89

20

Yang YZ 2010

China

Normoalbuminuria

28.59

3.64

25

21.07

3.48

30

Macroalbuminuria

43.12

4.62

25

21.07

3.48

30

Feng LM 2010

China

Normoalbuminuria

34.2

7.1

40

32.8

6.4

35

Macroalbuminuria

69.4

7.2

32

32.8

6.4

35

Wu YJ 2010

China

NG

172.5

20.4

30

125.4

14.6

28

Ye CF 2010

China

Normoalbuminuria

31.36

5.75

37

26.54

5.78

32

Macroalbuminuria

58.69

9.87

37

26.54

5.78

32

Huang JW 2010

China

Normoalbuminuria

41.85

10.38

29

22.5

5.75

30

Microalbuminuria

79.51

44.95

32

22.5

5.75

30

Macroalbuminuria

118.15

59.38

28

22.5

5.75

30

Chen D 2011

China

Normoalbuminuria

129.16

27.08

30

83.32

30.55

60

Microalbuminuria

162.97

98.58

30

83.32

30.55

60

Macroalbuminuria

563.46

122.67

30

83.32

30.55

60

Li QX 2011

China

Normoalbuminuria

31.9

9.72

26

21.5

6.89

20

Microalbuminuria

49.6

14.78

23

21.5

6.89

20

Macroalbuminuria

70.3

26.48

18

21.5

6.89

20

Zhou ZX 2011

China

Normoalbuminuria

33.12

8.16

50

32.98

7.83

50

Microalbuminuria

49.21

18.11

56

32.98

7.83

50

He Y 2012

China

Normoalbuminuria

147.01

20.98

48

131.82

36.01

60

Macroalbuminuria

172.31

19.06

42

131.82

36.01

60

Zhang Y 2012

China

NG

154.8

7.09

28

122.84

6.3

15

Du ZC 2013

China

Normoalbuminuria

18.55

2.67

20

8.97

4.087

18

Microalbuminuria

19.04

2.87

20

8.97

4.087

18

Macroalbuminuria

18.12

3.17

21

8.97

4.087

18

Zhang WQ 2014

China

Normoalbuminuria

30.3

4.42

32

24.52

2.81

23

Microalbuminuria

34.32

4.32

41

24.52

2.81

23

Macroalbuminuria

58.31

5.16

13

24.52

2.81

23

Liu S 2014

China

Normoalbuminuria

76.8

3.1

30

29.6

2.5

30

Microalbuminuria

114.8

3.1

30

29.6

2.5

30

Macroalbuminuria

135.8

5.9

30

29.6

2.5

30

Bao HL 2014

China

Microalbuminuria

75.4

9.2

33

71.2

11.1

36

Feng R 2015

China

Normoalbuminuria

7.58

2.11

22

5.13

1.63

30

Microalbuminuria

11.89

3.33

29

5.13

1.63

30

Macroalbuminuria

24.62

6.62

35

5.13

1.63

30

Lv C 2015

China

Normoalbuminuria

27.3

5.45

137

14.98

3.23

131

Microalbuminuria

51.8

5.72

122

14.98

3.23

131

Macroalbuminuria

72.97

6.05

68

14.98

3.23

131

Bi FC 2016

China

Normoalbuminuria

5.61

2.08

21

1.79

1.64

20

Microalbuminuria

8.98

2.26

20

1.79

1.64

20

Macroalbuminuria

11.39

1.61

20

1.79

1.64

20

  1. NR: not report