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Table 2 Estimated proportion of leukocyte subtypes within isolated cell-type fractions from nonsmokers and smokers

From: Epigenomic profiling of isolated blood cell types reveals highly specific B cell smoking signatures and links to disease risk

Cell type

Subtype

Nonsmokers

Percent within the isolated fraction

Smokers

Percent within the isolated fraction

Difference

p*

p-adj**

(Mean ± S.E.M.)

(Mean ± S.E.M.)

(Mean) (%)

B Cell

(CD19+)

Naïve B

60.0% ± 1.9%

52.8% ± 2.2%

 − 7.20

0.014

0.033

Memory B

31.3% ± 1.8%

36.0% ± 2.2%

4.70

0.096

0.12

Granulocyte

(CD15+)

Neutrophils

95.0% ± 0.3%

93.6% ± 0.6%

 − 1.40

0.028

0.054

Basophils

0.1% ± 0.0%

0.2% ± 0.1%

0.10

0.134

0.348

Eosinophils

0.0% ± 0.0%

0.0% ± 0.0%

0.00

0.334

0.26

Monocyte

(CD14+)

Monocytes

93.8% ± 0.5%

93.1% ± 0.4%

 − 0.60

0.332

0.684

NK Cell (CD56+)

Natural killer

49.4% ± 1.7%

46.5% ± 1.8%

 − 2.90

0.244

0.231

CD4T Cell (CD4+)

Naïve CD4T

35.1% ± 2.0%

30.2% ± 2.0%

 − 4.90

0.09

0.413

Memory CD4T

49.2% ± 1.8%

52.1% ± 1.7%

2.90

0.253

0.739

Regulatory T (Treg)

5.3% ± 0.4%

5.6% ± 0.5%

0.30

0.641

0.544

CD8T Cell (CD8+)

Naïve CD8T

37.6% ± 2.2%

31.3% ± 2.7%

 − 6.40

0.07

0.319

Memory CD8T

45.7% ± 2.0%

48.9% ± 2.4%

3.20

0.31

0.648

  1. Method of Salas et al. [30] used to estimate subtypes within isolated cell types
  2. *The p values are from linear regression of subtype proportion on smoking status only
  3. **The p-adj values are linear regression p values after adjusting age, ancestry, sex and body mass index