Table 1.
Total Cohort | Non-Smoker Controls | Smoker Controls | GOLD Unclassified | GOLD 1 | GOLD 2 | GOLD 3 | GOLD 4 | |
---|---|---|---|---|---|---|---|---|
N | 10220* | 108 | 4433 | 1204 | 818 | 1919 | 1153 | 585 |
Age, yr | 59.6 ± 9.0 | 62.1 ± 9.2 | 56.6 ± 8.4 | 57.1 ± 8.3 | 61.7 ± 8.9 | 62.6 ± 8.9 | 64.4 ± 8.3 | 63.9 ± 7.6 |
Male, % | 53.2 | 31.5 | 52.8 | 46.3 | 57.7 | 53.1 | 57.8 | 58.8 |
African American, % | 33.1 | 7.4 | 41.1 | 43.9 | 23.1 | 25.1 | 20.8 | 19.5 |
Data are presented as mean ± SD or as a percentage of the group.
Non-smoker and smoker control subjects have a post-bronchodilator and FEV1/FVC ≥ 0.7 and FEV1 ≥ 80% predicted.
GOLD Unclassified subjects have a post-bronchodilator FEV1/FVC ≥ 0.7 and FEV1 < 80% predicted.
Missing from total - 59 subjects who did not have final group assignment due to failed spirometry.