Table 1 Demographic characteristics of study population current smokers at time of biospecimen collection stratified by race/ethnicity
From: Association of internal smoking dose with blood DNA methylation in three racial/ethnic populations
Japanese Americans | Native Hawaiians | Whites | |
|---|---|---|---|
N | 203 | 205 | 204 |
Age (years), mean (SD) | 61 (6.95) | 57 (12.82) | 62 (6.85) |
Gender, N (%) | |||
Males | 101 (49.7) | 101 (49.3) | 101 (49.5) |
Females | 102 (50.3) | 104 (50.7) | 103 (50.5) |
BMI (kg/m2), mean (SD) | 25.53 (4.71) | 29.29 (7.05) | 26.61 (5.78) |
Pack-years, mean (SD) | 44.68 (17.95) | 42.44 (24.15) | 56.82 (24.53) |
CPD, mean (SD) | 19.93 (7.45) | 21.15 (9.5) | 26.32 (11.38) |
CYP2A6 activity, mean (SD) | 0.85 (1.47) | 1.08 (1.14) | 1.43 (1.73) |
NE (nmol/ml) | 34.98 (27.78) | 50.26 (41.49) | 55.20 (48.86) |
Cell types, mean (SD) | |||
CD8 cells** | 0.03 (0.04) | 0.05 (0.04) | 0.02 (0.03) |
CD4T cells | 0.16 (0.07) | 0.16 (0.06) | 0.16 (0.08) |
Natural killer cells* | 0.06 (0.04) | 0.06 (0.04) | 0.04 (0.03) |
B cells** | 0.08 (0.04) | 0.08 (0.03) | 0.06 (0.03) |
Monocytes | 0.05 (0.04) | 0.05 (0.03) | 0.06 (0.04) |
Granulocytes* | 0.67 (0.12) | 0.66 (0.11) | 0.69 (0.12) |