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Table 4 Immunological parameters showing an age-related increase

From: Slower immune system aging in women versus men in the Japanese population

Immunological parameters

Male (N = 162)

Female (N = 194)

Gender difference

Slope

Intercept

R

p-value

Slope

Intercept

R

p-value

p-value

(a) CD4 + T cells

23.28

−313

<0.001

0.990

16.92

77

0.114

0.107

0.004

(b) CD4/CD8 ratio

0.087

−2.260

0.316

<0.001

0.064

−0.713

0.452

<0.001

0.001

(c) Memory T cells

12.35

−141

0.114

0.153

10.11

−91

0.253

<0.001

<0.001

(d) CD4 + CD25 + T cells

1.830

−47

0.077

0.379

1.602

−33

0.100

0.233

NS

(e) NK cells

17.41

−449

0.105

0.194

11.94

−186

0.268

<0.001

0.001

  1. ※: Number/mm3. R: Correlation coefficient. NS: not significant.