Table 1.
Characteristics of the study population in the Normative Aging Study [mean ± SD or n (%)]. This table includes data collected at each visit for all measurements on all subjects
| Variable | All Visits, n=1,097 | |
|---|---|---|
| Age, years (SD) | 73.2 | (6.6) |
| Body mass index, Kg/m2 (SD) | 28.2 | (4.1) |
| Smoking status, n (%) | ||
| Never smoker | 338 | (30.8) |
| Former smoker | 45 | (4.1) |
| Current smoker | 714 | (65.1) |
| Pack years of smoking,* pack × year (SD) | 30.8 | (26.7) |
| Fasting blood glucose, mg/dL (SD) | 108.5 | (26.6) |
| Diabetes, n (%) | 215 | (19.6) |
| Treatment with statins, n (%) | 434 | (39.6) |
| Systolic Blood Pressure, mmHg (SD) | 130.3 | (17.4) |
| Dyastolic Blood Pressure, mmHg (SD) | 75.5 | (9.8) |
| Blood count, | ||
| White blood cells, cells/mm3 (SD) | 6,638 | (2,955) |
| Neutrophils, % | 62.2 | (8.7) |
| Lymphocytes, % | 25.5 | (8.0) |
| Monocytes, % | 8.6 | (2.1) |
| Basophils, % | 0.6 | (0.5) |
| Eosinophils, % | 3.3 | (2.1) |
| Season of the visit, n (%) | ||
| Spring | 286 | (26.1) |
| Summer | 300 | (27.4) |
| Fall | 319 | (29.1) |
| Winter | 192 | (17.5) |
| DNA methylation, %5mC† (SD) | ||
| LINE-1 | 77.2 | (2.2) |
| Alu | 26.2 | (1.2) |
*
Mean and SD among ever smokers
†
Percentage of methylated cytosine