Table 2.
Baseline1 population characteristics of Framingham Heart Study participants contributing to SNP analysis
| SNP—FEV1 Analysis | Offspring Cohort |
|---|---|
| N in analysis | N = 3,230 |
| FEV1, L | 3.0 (0.8) |
| Follow-up duration, yr | 14.7 |
| Baseline age, yr | 50.9 (10.3) |
| Male, % | 47 |
| Height, cm | 165.5 (9.5) |
| Baseline pack-years | 25.4 (21.3) |
| Current smokers2, % | 24.6 |
| Former smokers2, % | 39.8 |
1 Baseline measurements refer to Exam 5; Participant characteristics listed as mean (SD) for continuous variables and number (%) for categorical variables
2 Current smokers at baseline; former smokers at all time points