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Table 2 Main clinicopathological characteristics of all relevant studies

From: Associations of serum low-density lipoprotein and systolic blood pressure levels with type 2 diabetic patients with and without peripheral neuropathy: systemic review, meta-analysis and meta-regression analysis of observational studies

First author (Ref.)

T2DM without DPN

T2DM with DPN

N (M/F)

Age (yrs.)

LDL (mmol/L)

SBP (mmHg)

P-value*

N (M/F)

Age (yrs.)

LDL (mmol/L)

SBP (mmHg)

P-value**

Zhao W. et al. [4]

365 (230/135)

59.48

2.75 ± 0.86

130.29 ± 15.93

0.01

104 (53/51)

66.94

2.62 ± 0.82

135.81 ± 17.65

0.133

Wu F. et al. [5]

560 (338/222)

53.20

2.84 ± 0.96

129.10 ± 17.30

<0.01

574 (307/267)

61.00

2.66 ± 0.95

134.4 ± 18.40

0.002

ALMA R. et al. [6]

12 (6/6)

53.60

2.20 ± 0.70

NA

NA

70 (46/24)

60.23

2.30 ± 1.25

NA

NA

Yang J. et al. [7]

1287 (626/661)

58.61

2.78 ± 1.01

132.06 ± 20.54

0.03

224 (117/107)

66.58

2.75 ± 0.99

134.72 ± 22.25

0.438

Bilir B. et al. [8]

53 (24/29)

58.85

3.59 ± 1.40

128.97 ± 11.73

NA

46 (23/23)

56.91

3.15 ± 0.99

131.62 ± 14.25

NA

Sharon L. et al. [9]

1767 (866/901)

57.20

2.76 ± 0.83

137.60 ± 18.70

< 0.01

214 (135/79)

60.10

2.71 ± 0.81

146.00 ± 20.60

0.45

Yong J. et al. [10]

90 (50/40)

54.90

2.90 ± 0.88

NA

NA

90 (46/44)

54.10

2.73 ± 0.82

NA

0.18

Su J. et al. [11]

461 (248/213)

56.00

2.67 ± 0.82

134.00 ± 17.00

0.10

102 (51/51)

58.40

2.60 ± 0.86

137.00 ± 19.00

0.44

Zhang Y. et al. [12]

642 (342/300)

60.03

2.92 ± 0.96

134.29 ± 19.14

0.00

417 (247/170)

61.66

2.95 ± 1.15

142.50 ± 22.39

0.60

Won J. et al. [13]

2661 (1346/1315)

59.40

2.60 ± 0.09

127.00 ± 14.40

0.39

1338 (593/745)

62.70

2.40 ± 0.90

127.50 ± 15.50

0.02

Lin X. et al. [53]

123 (NA)

52.83

3.19 ± 0.94

135.52 ± 17.84

< 0.05

77 (NA)

60.79

3.39 ± 1.28

143.12 ± 22.72

> 0.05

Qiao X. et al. [54]

128 (53/75)

62.30

2.96 ± 0.77

133.00 ± 16.00

0.03

57 (26/31)

64.50

2.98 ± 1.09

141.00 ± 13.00

0.90

Sadosky A. et al. [34]

288,328 (134,761/153580)

61.40

2.62 ± 0.85

NA

NA

35,050 (17,166/17871)

64.80

2.37 ± 0.84

NA

0.00

YM. S. et al. [55]

785 (403/382)

54.60

2.52 ± 0.81

132.00 ± 15.00

0.07

197 (94/103)

57.10

2.5 ± 0.88

135.00 ± 17.00

0.76

Khawaja N. et al. [56]

607 (201/195)

62.70

2.61 ± 0.78

142.40 ± 18.10

<0.01

396 (279/328)

57.80

2.64 ± 0.80

138.30 ± 17.50

<0.01

Zhang Q. et al. [57]

159 (79/80)

59.75

2.68 ± 0.95

133.30 ± 18.14

0.03

95 (48/47)

64.02

2.54 ± 1.16

138.85 ± 21.18

0.29

Jangh M. et al. [58]

202 (NA)

49.40

3.39 ± 1.03

125.00 ± 21.30

<0.05

608 (NA)

53.80

3.37 ± 0.95

129.20 ± 23.40

0.90

Kim S. et al. [59]

761 (360/401)

62.50

2.44 ± 0.84

128.00 ± 16.00

0.41

577 (233/344)

63.60

2.45 ± 0.88

127.00 ± 15.00

0.98

Bansal D. et al. [14]

1420 (701/719)

52.50

2.79 ± 1.03

NA

NA

586 (288/298)

57.10

2.379 ± 1.20

NA

<0.01

Buraczy M. et al. [15]

838 (400/438)

62.90

2.80 ± 1.09

NA

NA

406 (194/212)

63.00

2.80 ± 1.05

NA

1.00

Luo Y. et al. [16]

178 (107/71)

53.00

2.70 ± 0.90

NA

NA

234 (126/108)

59.00

2.60 ± 0.90

NA

0.43

Ren Z. et al. [17]

385 (191/194)

66.40

2.50 ± 0.80

133.00 ± 18.00

0.46

402 (204/198)

63.80

2.60 ± 0.80

132.00 ± 18.00

0.15

Andersen S. et al. [44]

1178 (693/485)

60.90

3.42 ± 0.12

148.00 ± 21.00

<0.05

78 (42/36)

60.60

3.10

150.50 ± 14.23

<0.05

Anastasi T. et al. [45]

274 (143/131)

63.30

3.34 ± 1.40

141.20 ± 19.70

<0.01

107 (77/30)

66.10

3.00 ± 1.10

150.40 ± 22.90

0.02

Xu T. et al. [46]

397 (111/286)

62.34

3.07 ± 0.90

137.14 ± 19.72

0.27

160 (50/90)

62.38

3.13 ± 1.07

135.04 ± 21.36

0.50

Zhu T. et al. [52]

32 (16/16)

54.38

2.64 ± 0.76

126.96 ± 11.30

NA

32 (15/17)

56.00

2.94 ± 1.23

128.97 ± 11.97

NA

Deng W. et al. [51]

80 (43/37)

60.68

2.71 ± 0.63

127.86 ± 16.36

0.08

122 (72/49)

60.69

2.76 ± 0.70

132.64 ± 20.26

0.92

Thainá R. et al. [50]

258 (101/157)

66.00

2.94 ± 1.01

142.00 ± 22.00

0.07

168 (61/107)

70.00

3.04 ± 0.99

146.00 ± 23.00

0.36

Miric D. et al. [35]

51 (20/31)

61.50

3.88 ± 1.32

NA

NA

29 (13/16)

62.90

4.01 ± 1.45

NA

NA

Hussain G. et al. [42]

22 (10/12)

51.90

2.29 ± 0.34

132.82 ± 10.63

NA

64 (28/36)

54.68

2.50 ± 0.59

140.00 ± 39.14

<0.05

Li L. et al. [43]

2246 (1148/1098)

57.00

3.10 ± 1.19

135.70 ± 18.85

<0.01

1113 (459/654)

62.30

3.09 ± 1.12

139.27 ± 19.15

0.82

Pai Y. et al. [36]

2223 (1280/943)

61.90

2.64 ± 0.81

NA

NA

624 (381/243)

71.40

2.51 ± 0.80

NA

0.02

Xu F. et al. [48]

45 (21/24)

58.70

2.70 ± 0.80

139.00 ± 18.00

0.19

45 (25/20)

59.80

2.30 ± 0.60

134.00 ± 18.00

0.01

Wang H. et al. [37]

78 (34/44)

60.59

3.03 ± 0.68

NA

NA

129 (54/75)

61.53

2.96 ± 0.88

NA

NA

Wang H. et al. [40]

150 (73/77)

60.80

3.60 ± 2.20

135.00 ± 19.70

NA

101 (51/50)

61.80

3.00 ± 1.90

127.00 ± 16.50

NA

Pai Y. et al. [39]

351 (186/165)

72.50

2.54 ± 0.72

133.20 ± 15.00

0.15

275 (147/128)

73.50

2.49 ± 0.73

131.25 ± 14.90

0.93

Mao F. et al. [22]

686 (398/288)

57.73

NA

127.81 ± 13.10

0

264 (157/107)

63.78

NA

131.82 ± 15.33

NA

Hoque S. et al. [33]

304 (NA)

49.68

NA

127.12 ± 12.62

0.20

96 (NA)

51.93

NA

129.33 ± 14.66

NA

  1. *P-values is calculated LDL mean between the T2DM with and without DPN
  2. **P-values is calculated SBP mean between the T2DM with and without DPN
  3. Abbreviations: N, number; M, male; F, femal; T2DM, type-2 diabetes mellitus; DPN, diabetic peripheral neuropathy; LDL, low-density lipoprotein; SBP, systolic blood pressure; mmol/L, millimole per liter; mmHg, millimeter of Mercury; NA, not avalibale