Table 1 Distribution of erythrocyte parameters and other potential confounding factors

age

38.563 ± 11.444

39.798 ± 11.572

40.619 ± 11.406^*

42.413 ± 11.495^*

43.317 ± 11.352^*

sex

male

2688

2196

2415

1861

1351

female

3765

3104

3317

2681

1995

RBC

4.769 ± 0.456

4.705 ± 0.454^*

4.698 ± 0.454^*

4.678 ± 0.463^*

4.7 ± 0.432^*

Hb

142.454 ± 14.885

142.845 ± 15.27

141.73 ± 15.169^*

142.569 ± 15.381

142.115 ± 16.465

HCT

42.888 ± 3.905

42.408 ± 3.951^*

42.015 ± 3.889^*

42.191 ± 3.964^*

41.846 ± 3.869^*

GGT

18.004 ± 16.393

20.016 ± 20.032^*

19.383 ± 16.419^*

21.08 ± 20.193^*

21.336 ± 20.323^*

ALB

46.575 ± 2.427

45.789 ± 2.784^*

45.362 ± 2.742^*

45.128 ± 2.69^*

44.991 ± 2.436^*

GLO

27.016 ± 3.838

27.133 ± 3.973

28.253 ± 3.972^*

29.128 ± 4.046^*

30.314 ± 3.826^*

BUN

4.746 ± 1.197

4.698 ± 1.175^*

4.664 ± 1.154^*

4.772 ± 1.204

4.812 ± 1.145^*

S-Cr

76.943 ± 13.736

77.897 ± 13.842^*

77.502 ± 14.072^*

78.587 ± 14.694^*

77.012 ± 12.743

WBC

6.167 ± 1.466

6.069 ± 1.483^*

6.054 ± 1.479^*

6.142 ± 1.501

6.182 ± 1.489

PDW

12.346 ± 1.712

12.323 ± 1.722

12.226 ± 1.671^*

12.164 ± 1.669^*

12.088 ± 1.63^*

MPV

10.454 ± 0.811

10.448 ± 0.946

10.42 ± 0.803^*

10.398 ± 0.802^*

10.428 ± 0.796

PCT

0.247 ± 0.089

0.257 ± 0.320^*

0.254 ± 0.266^*

0.249 ± 0.055

0.245 ± 0.054

Diet

Vegetarian

3454

2194^*

2098^*

1906^*

1214^*

normal

1863

792

750

550

463

meat-based

1118

2283

2866

2064

1653

sea food

18

31

18

22

16

Drinking

no

3698

2959

3333

2731^*

1977

yes

2755

2341

2399

1811

1369

Smoking

no

5274

4323

4678

3726

2718

yes

1179

977

1054

816

628

Sleep

≥fair

6270

5173

5557

4373^*

3250

<fair

183

127

175

169

96

Exercise

never/seldom

4694

3902

4267^*

3469^*

2477

often

1759

1398

1465

1073

869