Table 1.
Characteristics of the 1103 men participating in 3162 visits in the context of the Normative Aging Study, 1995–2011.
| Participant characteristics at 1st visit (n=1103) | Statistics |
|---|---|
| Age, mean ± SD, yr | 69.1 ± 7.2 |
| <65 yrs, n (%) | 309 (28.0) |
| Race, n (%) | |
| Black | 19 (1.7) |
| White | 1069 (96.9) |
| missing | 15 (1.4) |
| Height, mean ± SD, cm | 173.7 ± 6.7 |
| Weight, mean ± SD, kg | 84.4 ± 13.5 |
| Education, n (%), yr | |
| <12 | 47 (4.3) |
| 12 | 272 (24.7) |
| 13–15 | 307 (27.8) |
| >15 | 429 (38.9) |
| missing | 48 (4.4) |
| Smoking status, n (%) | |
| Never | 303 (27.5) |
| Current | 69 (6.3) |
| Former | 731 (66.3) |
| Pack-years* ± SD | 23.0 ± 28.1 |
| Diabetes, n (%) | 110 (10.0) |
| Obesity, n (%) | 280 (25.4) |
| Asthma, n (%) | 65 (5.9) |
| Chronic bronchitis, n (%) | 70 (6.3) |
| Emphysema, n (%) | 35 (3.2) |
| Methacholine responsiveness, n (%) | 115 (10.4) |
| Missing | 207 (18.8) |
| Corticosteroids, n (%) | 44 (4.0) |
| Sympathomimetic (α, β), n (%) | 106 (9.6) |
| Anticholinergic, n (%) | 12 (1.1) |
| FVC, mean ± SD, L | 3.5 ± 0.7 |
| FEV1, mean ± SD, L 1st sec | 2.6 ± 0.6 |
| Visit characteristics (n=3162) | |
| Season, n (%) | |
| Spring (March–May) | 795 (25.1) |
| Summer (June–Aug) | 926 (29.3) |
| Fall (Sept–Nov) | 914 (28.9) |
| Winter (Dec–Feb) | 527 (16.7) |
| Day of the week, n (%) | |
| Tuesday | 462 (14.6) |
| Wednesday | 456 (14.4) |
| Thursday | 1559 (49.3) |
| Friday | 685 (21.7) |
forced vital capacity= FVC, forced expiratory volume in 1 second= FEV1
*
Among current or former smokers