Variable | Fast decline (n = 275) | No decline (n = 304) | p Value* |
---|---|---|---|
Age, yr†| 49.5 (6.4) | 47.6 (6.9) | 0.0007 |
Sex, n (%) | 163 men (59) | 203 men (67) | 0.06 |
Smoking history, pk yrs†‡ | 43.3 (19.1) | 38.3 (18.1) | 0.0005 |
Baseline FEV1, % predicted†§ | 72.7 (8.9) | 75.7 (8.1) | <0.0001 |
Methacholine response†ll | -23.4 (32.7) | -7.5 (14.0) | <0.0001 |