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Table 2 Association between semen parameters, serum reproductive hormones, lipids and leptin and obesity associated markers based on the dichotomized analyses for BMI, WC, WHR and WHtR

From: Association between obesity-associated markers and semen quality parameters and serum reproductive hormones in Chinese infertile men

Variables

Status

Number

WHO BMI

Chinese BMI

Waist (cm)

WHR

WHtR

Χ2

P value

Χ2

P value

Χ2

P value

Χ2

P value

Χ2

P value

Semen volume (mL)

<  1.5

15

1.916

0.590

1.507

0.681

1.641

0.200

0.190

0.663

1.623

0.203

 

≥ 1.5

166

          

Ratio of PR sperm (%)

<  32

74

10.423

0.015

11.879

0.008

1.726

0.189

0.621

0.431

0.433

0.511

 

≥ 32

107

          

Ratio of PR + NP sperm (%)

<  40

46

3.215

0.360

2.134

0.545

2.686

0.101

3.033

0.082

0.858

0.354

 

≥ 40

145

          

Sperm concentration (106/ml)

<  15

19

4.590

0.204

6.371

0.095

2.843

0.092

4.841

0.028

2.011

0.156

 

≥ 15

164

          

Ratio of morphologically normal sperm (%)

<  4

109

0.386

0.943

0.662

0.882

0.000

1.000

0.000

1.000

1.088

0.297

 

≥ 4

72

          

E2

<  20

16

1.933

0.926

1.623

0.951

0.730

0.694

0.013

0.908

0.824

0.364

 

≥ 20 & ≤ 40

100

          
 

>  40

65

          

TT

<  1.75

1

1.405

0.966

1.863

0.932

0.939

0.625

1.441

0.487

1.606

0.448

 

≥ 1.75 & ≤ 3.5

87

          
 

>  3.5

93

          

PRL

<  13.13

157

0.814

0.846

1.731

0.630

1.847

0.174

1.310

0.252

0.643

0.423

 

≥ 13.13

24

          

Serum leptin (μg/L)

<  12

50

0.098

0.992

0.298

0.960

0.007

0.932

0.712

0.399

0.158

0.691

 

≥ 12 & ≤ 15

131

          
 

>  15

           

Seminal leptin (μg/L)

<  12

47

0.192

0.979

0.521

0.914

0.387

0.534

0.069

0.793

0.000

1.000

 

≥ 12 & ≤ 15

134

          
 

>  15

           

TC (mmol/L)

<  5.18

111

14.493

0.025

18.916

0.004

5.217

0.074

13.485

0.001

1.560

0.458

 

≥ 5.18 & ≤ 6.19

40

          
 

>  6.2

18

          

LDL-C (mmol/L)

< 3.37

132

3.079

0.799

8.068

0.233

0.170

0.919

1.365

0.505

0.680

0.712

 

≥3.37 & ≤ 4.12

22

          
 

> 4.14

16

          

HDL-C (mmol/L)

< 1.04

64

3.273

0.774

5.822

0.444

2.671

0.263

4.756

0.093

0.661

0.718

 

≥1.04 & < 1.55

94

          
 

≥1.55

12

          

TG (mmol/L)

< 1.70

69

0.866

0.834

4.518

0.211

0.092

0.761

0.021

0.884

0.000

1.000

 

≥1.70

101

          
  1. * p < 0.05; ** p < 0.01; *** p < 0.005; **** p < 0.0001; WC waist circumference, WHR waist-to-hip ratio, WHtR waist-to-height ratio