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Table 3 Characteristics of included studies

From: Neck circumference may be a valuable tool for screening individuals with obesity: findings from a young Chinese population and a meta-analysis

Author

Year

Country

Age (years)

Gender

Diagnostic criteria

n

Cut-off points

TP

FP

FN

TN

Central obesity

 Zhang

2015

China

≥40

Male

WC ≥ 85 cm

3891

36.8 cm

1728

426

604

1133

Female

WC ≥ 80 cm

5849

32.3 cm

2564

665

1275

1345

 Ang

2011

Philippines

49.35 ± 11.26

Male

WC ≥ 90 cm

227

40.0 cm

72

1

44

110

Female

WC ≥ 80 cm

198

33.8 cm

73

13

35

77

 Aswathappa

2014

India

18–65

Male

WC ≥ 90 cm

840

38.0 cm

259

78

99

404

Female

WC ≥ 80 cm

511

34.0 cm

196

24

127

164

 Wang

2017

China

45–86

Male

WC ≥ 85 cm

256

37.0 cm

106

14

35

101

Female

WC ≥ 80 cm

542

32.7 cm

255

54

85

148

 Lin

2017

China

≥50

Male

WC ≥ 90 cm

569

38.5 cm

170

50

56

293

Female

WC ≥ 85 cm

904

33.4 cm

439

118

79

268

 Peia

2017

China

18-25

Male

WC ≥ 85 cm

641

37.1 cm

66

144

20

411

Female

WC ≥ 80 cm

528

32.6 cm

25

61

5

437

Overweight/obesity

 Kumar

2012

India

≥35

Male

BMI ≥ 25 kg/m2

120

38.0 cm

9

17

2

92

Female

BMI ≥ 25 kg/m2

82

34.7 cm

10

4

3

65

 Coelho

2016

Brazil

≥60

Male

BMI ≥ 28 kg/m2

64

40.5 cm

26

23

4

11

Female

BMI ≥ 28 kg/m2

371

35.7 cm

134

143

26

65

 Aswathappa

2014

India

18–65

Male

BMI ≥ 23 kg/m2

840

36.0 cm

389

57

157

237

Female

BMI ≥ 23 kg/m2

511

32.0 cm

215

56

121

119

 Ben-Noun

2016

Israel

35–65

Male

BMI ≥ 25 kg/m2

352

37.0 cm

235

9

2

106

Female

BMI ≥ 25 kg/m2

371

34.0 cm

255

0

3

113

 Yan

2014

China

≥65

Male

BMI ≥ 25 kg/m2

971

38.0 cm

274

249

41

407

Female

BMI ≥ 25 kg/m2

1121

35.0 cm

322

187

80

532

 Yang

2010

China

20–80

Male

BMI ≥ 24 kg/m2

1294

38.0 cm

509

122

312

351

Female

BMI ≥ 24 kg/m2

1888

35.0 cm

858

222

389

419

 Wang

2017

China

45–86

Male

BMI ≥ 24 kg/m2

256

37.2 cm

98

32

28

98

Female

BMI ≥ 24 kg/m2

542

33.2 cm

184

42

66

250

 Lin

2017

China

≥50

Male

BMI ≥ 24 kg/m2

569

38.4 cm

211

42

69

247

Female

BMI ≥ 24 kg/m2

904

33.7 cm

384

99

93

328

 Peia

2017

China

18-25

Male

BMI ≥ 24 kg/m2

641

37.4 cm

83

124

34

400

Female

BMI ≥ 24 kg/m2

528

32.2 cm

47

70

13

468

  1. TP true positive value, FP false positive value, TN true negative value, FN false negative value
  2. a our unpublished research; n: sample size of each study