Forced expiratory volume in 1 s standardised residual(FEV1SR) and survival in each of seven age ranges
| Age range yrs | Subjects n | Dead | Males | FEV1SR | Survival yrs |
| 20 –<30 | 1126 | 10.0 | 45.8 | -1.3±1.8 | 15.1±11.0 |
| 30 –<40 | 2308 | 13.7 | 48.1 | -0.9±1.5 | 17.3±10.5 |
| 40 –<50 | 4496 | 27.2 | 45.9 | -1.0±1.4 | 16.8±10.1 |
| 50 –<60 | 7459 | 44.6 | 46.0 | -1.2±1.5 | 14.0±9.8 |
| 60 –<70 | 6639 | 56.8 | 52.0 | -1.4±1.5 | 9.3±8.3 |
| 70 –<80 | 3762 | 51.0 | 53.9 | -1.5±1.3 | 4.6±4.9 |
| 80 – 97 | 1177 | 59.6 | 51.6 | -1.2±1.2 | 3.0±3.1 |
Data are presented as % or mean±sd, unless otherwise indicated.