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Table 1 Geometric mean absolute and percentage lymphocyte subpopulation counts at each age and overall, according to season of birth (values adjusted for gender, gestation, birth weight and monoclonal antibody source; overall values also adjusted for age at measurement).

From: Birth season and environmental influences on blood leucocyte and lymphocyte subpopulations in rural Gambian infants

  

Absolute counts (× 109/L)

Percentage counts

 

Week

DRY season birth

WET season birth

p-value

DRY season birth

WET season birth

p-value

CD3+

0

2.30

2.53

0.41

51.8

50.5

0.70

 

8

3.57

4.35

0.029

58.7

58.2

0.77

 

16

4.10

5.26

0.014

57.7

59.0

0.66

 

52

3.32

3.72

0.26

60.9

61.9

0.71

 

All

3.40

3.85

0.01

57.1

56.2

0.47

CD4+

0

1.45

1.73

0.17

35.0

33.8

0.65

 

8

2.49

2.73

0.26

40.8

37.0

0.017

 

16

2.80

3.28

0.05

39.1

37.4

0.34

 

52

2.07

2.19

0.55

38.4

36.7

0.27

 

All

2.26

2.41

0.15

37.8

35.1

0.0017

CD8+

0

1.29

1.44

0.44

27.2

27.7

0.82

 

8

0.98

1.47

0.011

16.3

19.0

0.055

 

16

1.34

1.65

0.093

18.7

18.7

0.97

 

52

1.12

1.28

0.22

20.9

21.6

0.60

 

All

1.16

1.42

0.0007

20.4

21.4

0.18

CD19+

0

0.78

0.73

0.68

17.4

14.6

0.084

 

8

1.88

1.94

0.79

32.7

30.7

0.37

 

16

1.97

2.50

0.034

32.9

34.7

0.39

 

52

1.50

1.51

0.95

27.7

25.5

0.32

 

All

1.54

1.66

0.23

27.5

25.9

0.12

CD56+

0

0.84

0.78

0.68

19.1

16.0

0.14

 

8

0.27

0.35

0.095

4.8

5.4

0.34

 

16

0.25

0.33

0.028

4.1

4.5

0.38

 

52

0.21

0.29

0.0052

3.9

4.7

0.036

 

All

0.33

0.42

0.0014

6.1

6.5

0.17

CD4/CD8 ratio

0

   

1.3

1.2

0.70

 

8

   

2.5

1.9

0.018

 

16

   

2.1

2.0

0.69

 

52

   

1.8

1.7

0.32

 

All

   

1.9

1.6

0.013