Table 1.
Numbers of subjects and characteristics by cohort
| Cohort N | FEV1 – liters mean(SD) |
FEV1/FVC -% mean(SD) |
Age at exam mean(SD) |
% Female | % Ever Smoked | Pack-years Ever Smokers mean(SD) |
|
|---|---|---|---|---|---|---|---|
| ARIC | 1914 | 2.81(0.83) | 71.8 (9.9) | 54.8(5.7) | 48.8 | 64.4 | 32.1(23.0) |
| CHS | 1080 | 2.13(0.66) | 70.0(10.9) | 72.5(5.5) | 53.7 | 55.3 | 36.6(29.3) |
| FHS | 989 | 2.68(0.81) | 72.5(8.2) | 59.8(11.0) | 51.4 | 62.9 | 28.7(23.7) |
ARIC indicates Atherosclerosis Risk in Communities Study; CHS indicates Cardiovascular Health Study; FHS indicates Framingham Heart Study. Age at exam is the age at which the FEV1 and FEV1/FVC values used in this analysis were measured. This is the baseline exam for ARIC and CHS and the latest exam with acceptable pulmonary function for FHS.